JPH0962678A - Handwritten character selection device and handwritten character selection method - Google Patents

Abstract

(57) [Summary] [Purpose] With respect to handwritten character data that has not been cut into correct character units, even when the edit range cannot be specified correctly, the edit target is selected as intended by the user. [Structure] The determination means 7 and 8 determine which character is selected from the character data stored in the character data storage means 5 using the selection range and the character envelope figure, and the entire character is selected. It is also determined whether or not some of them are selected. When it is determined that a part of the character data is selected, the partial character forming means 10 and 11 determine the maximum value of the coordinates of one piece of handwriting data belonging to the character data and the minimum value of the coordinates of another piece of handwriting data. For all handwriting data,
The handwriting data having a predetermined relationship are sequentially connected in a chain to form a partial character. The partial character selection determining means 7 and 8 determine which partial character is selected using the configured partial characters and the selection range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for displaying handwritten characters input from a tablet device as they are on a screen and for editing the displayed characters by deleting them.
In particular, the present invention relates to a handwritten character selection device that selects an editing target for each character as intended by the user.

[0002]

2. Description of the Related Art In recent years, a system for inputting information into a computer by handwriting using a tablet or the like and displaying or editing handwriting as it is has appeared. For example, IPSJ Journal 1991 Vol.
32 No. In "8. Stroke editor and direct instruction / operation method", a system has been reported in which a pen-type input device is used to write a text on a screen with ruled lines and to edit character by character or line by line like a word processor.

In such a system, when inputting an editing instruction, a technique is being developed in which a calibration symbol called a gesture is written on a handwritten character to be edited, and the selection of the editing object and the editing instruction are inputted at the same time. As such a technique, the present inventor has previously filed a patent application No. 6-92696. This technique deletes characters as intended even for handwritten data that has not been cut into correct character units. For example, as shown in FIG. 10 (a), if the four characters "a", "i", "u", and "e" are not correctly cut, but are cut as two characters "ai" and "ue". To do. In this case, the gesture 703 is used to instruct to delete the character "U" as shown in FIG.
Editing range 704 specified by the gesture 703
And each handwriting forming the character "U" are compared in units of handwriting. Since all the handwritings forming the character “U” are included in the editing range by a predetermined ratio or more, it is determined that all the handwritings are to be deleted, and “U” is displayed as shown in FIG. Is deleted.

As described above, even if the cutoff is not performed for each correct character, it is determined whether or not to delete for each handwriting of the character to be deleted. As long as it is specified, the deletion is done as intended by the user.

[0005]

However, in the technique described above, since the edit range is specified by a gesture, the instruction of the edit range becomes ambiguous, and the character to be edited may overflow from the edit range. . For example, as shown in FIG. 11, it is assumed that the characters “pine”, “bamboo”, and “ume” are cut out as two characters 502 and 503 without being properly inspected. In this case, the user has instructed the edit range 504 with a gesture to delete the character "pine", but the character is slightly displaced and a part of the character "pine" protrudes. In such cases, the above technology
The handwriting 505 is not selected because it is determined whether or not the handwriting is selected for each handwriting unit depending on whether or not each handwriting is included in the editing range by a predetermined ratio or more. Some of it will remain.

In view of the above problems, the present invention is a handwriting which selects an editing target as intended by the user even when the editing range cannot be correctly specified for the handwritten character data which has not been cut into correct character units. An object is to provide a character selection device and a handwritten character selection method.

[0007]

In order to achieve the above object, in the invention according to claim 1, a handwriting data group input as coordinate data and cut off in character units, and a figure including the handwriting data group are included. A character data storage means for storing as a character data in association with a certain character envelope figure;
Display means for displaying each character on the screen based on the stored handwriting data group, selection range receiving means for receiving input of a selection range for selecting an edit target based on the display content of the display means, and selection By using the range and the character envelope figure, it is determined which character is selected from all the character data stored in the character data storage means, and further the entire character of the character data is selected. And a determination means for determining whether or not a part is selected,
When it is determined that a part of the characters of the character data is selected, the maximum coordinate value of the coordinate data of one handwriting data and the other handwriting data of all the handwriting data belonging to the character data are determined. Partial character composing means for composing each partial character by sequentially connecting the handwriting data whose comparison result has a predetermined relationship by comparing with the minimum coordinate value possessed by a predetermined procedure, and each composed partial character And partial character selection determining means for determining which partial character is selected using the selection range.

According to another aspect of the present invention, when the determining unit determines that a part of the characters of the character data is selected, the partial character forming unit horizontally writes the line to which the character data belongs. For each of the line direction determination unit that determines whether there is vertical writing and the handwriting data that belongs to the character data, obtain the range indicated by the maximum coordinate value and the minimum coordinate value in the line direction determined by the line direction determination unit. A coordinate range calculation unit and a partial character configuration unit that forms a partial character by connecting handwriting data in which the coordinate ranges calculated by the coordinate range calculation unit overlap each other.

In the invention according to claim 3, the handwritten character selection device further calculates a target selection ratio which is a value obtained by dividing an area where the character envelope graphic and the selection range overlap by the area of the character envelope graphic. A first selection determination unit that determines that the entire character of the character data is selected if the target selection ratio of the character data is greater than or equal to a predetermined target selection reference value; If the target selection ratio is smaller than a predetermined target selection reference value and is larger than a predetermined non-selection reference value that is a criterion for determining that it is not selected, it is determined that a part of the characters of the character data is selected. A second selection determination unit is provided.

According to another aspect of the present invention, the target selection ratio calculating means further comprises a partial character envelope graphic creating unit for creating a partial character envelope graphic based on the handwriting data group belonging to the constructed partial character, and the partial character envelope. The target character selection ratio calculation unit that calculates a target selection ratio that is a value obtained by dividing the area where the partial character outer shape graphic created by the outer character graphic creation unit and the selection range overlap by the area of the partial character outer property graphic is provided, and the partial character selection determination is performed. The means is provided with a determination unit that determines that the partial character is selected only when the target selection ratio of the partial character is equal to or more than a predetermined target selection reference value.

According to the fifth aspect of the present invention, if the partial character selection determination means selects at least one of the partial character groups forming one character data, the target selection reference value when determining other partial characters. It is characterized by lowering. Claim 6
In the invention described above, the handwritten character selection device further reconstructs a partial character group determined to be selected by the partial character selection determination means and another partial character group not selected as one character data. The character data storage means is further provided with a partial character reconstruction updating means for updating the stored content.

In the invention according to claim 7, the handwritten character selection device further selects an area in which the partial character envelope figure of the partial character determined not to be selected by the partial character selection determination means overlaps the selected range. Selection range ratio calculating means for calculating a selection range ratio which is a value divided by the area of the area, and when the calculated selection range ratio is equal to or larger than a predetermined selection range reference value, it is determined that a part of the partial characters is selected. Second partial character selection determining means for determining, and when it is determined that a part of the partial character is selected, selection determination is performed on each piece of handwriting data forming the partial character, and the selected handwriting data And a handwriting selecting means for inspecting and selecting the group as a new partial character.

According to another aspect of the present invention, there is provided a display step of displaying each character on the screen based on the stored handwriting data group, and a selection range for selecting an edit target based on the display content of the display means. Which character is selected from all the character data stored in the character data storage means by using the selection range receiving step of receiving an input and the selection range and the character envelope figure stored in the character data storage means. Using the first determination step for determining whether the sentence is selected, the selection range and the character envelope figure stored in the character data storage means, the entire character of the character data determined to be the sentence is selected. The second determination step for determining whether or not is selected, and when it is determined that a part of the characters of the character data is selected, For all the handwriting data belonging to the character data, the maximum coordinate value of the coordinate data of one handwriting data and the minimum coordinate value of the other handwriting data are compared in a predetermined procedure, and the handwriting data is in a predetermined relationship. A partial character forming step of forming each partial character by sequentially connecting the partial characters, and using the formed partial characters and the selection range, a partial character selection judgment for judging which partial character is selected And a step.

In the invention according to claim 9, in the partial character forming step, when it is judged in the second judging step that a part of the characters of the character data is selected,
A line direction determination step of determining whether the line to which the character data belongs is horizontal writing or vertical writing, and for each of the handwriting data to which the character data belongs, the maximum coordinate value in the line direction determined by the line direction determination unit and A coordinate range calculating step of obtaining a range indicated by the minimum coordinate value and a partial character forming step of forming a partial character by connecting handwriting data in which the coordinate ranges calculated by the coordinate range calculating section overlap each other. It is characterized by

According to a tenth aspect of the present invention, in the handwritten character selection method, the target selection ratio is a value obtained by dividing the area where the character envelope shape and the selection range overlap by the area of the character envelope graphic prior to the processing of the determination step. A target selection ratio calculation step for calculating, wherein the determination step determines that the entire character of the character data is selected if the target selection ratio of the character data is greater than or equal to a predetermined target selection reference value. In the selection determination step, and if the target selection ratio of the character data is smaller than a predetermined target selection reference value and larger than a predetermined non-selection reference value that is not selected, a part of the characters of the character data is selected. And a second selection determination step for determining that

In the invention according to claim 11, the target selection ratio calculating step includes a partial character envelope figure creating step for creating an envelope figure based on the handwriting data group belonging to the constituted partial characters, and a partial character envelope figure creating step. The target character selection ratio calculation step of calculating a target selection ratio, which is a value obtained by dividing the overlapping area of the outer shape and the selected range by the area of the outer shape pattern, is included in the partial character selection determination step. It is characterized by comprising a determination step of determining that the partial character is selected only when the ratio is equal to or more than a predetermined target selection reference value.

[0017]

According to the first aspect of the invention, which character is selected from all the character data stored in the character data storage means by the determination means using the selection range and the character envelope figure. To judge. Further, the determination means is
It is also determined whether all or some of the characters of the character data determined to be selected are selected.
When it is determined that a part of the characters of the character data is selected, the partial character forming means determines the maximum value of the coordinates indicated by the coordinate data of the one handwriting data belonging to the character data and the other one of the handwriting data. The minimum value of the coordinate indicated by the coordinate data is compared with all the handwriting data in a predetermined procedure, and the handwriting data whose comparison results have a predetermined relationship are sequentially and sequentially combined to form a partial character. The partial character selection determining means determines which partial character is selected using the configured partial characters and the selection range.

According to the second aspect of the invention, the line direction determination unit of the partial character construction means determines whether the line to which the character data belongs is horizontal writing or vertical writing. The coordinate range calculation unit
For each piece of handwriting data, the range in the row direction determined by the row direction determination unit is obtained. A partial character is formed by connecting handwriting data in which the ranges calculated by the partial character forming unit overlap each other.

According to the invention of claim 3, the first judging means
If the target selection ratio of the character data is greater than or equal to a predetermined target selection reference value, the selection determination unit determines that the entire character of the character data is selected, and the second selection determination unit determines the target of the character data. If the selection ratio is less than or equal to the predetermined target selection reference value and greater than the predetermined non-selection reference value, it is determined that a part of the characters of the character data is selected.

According to the invention of claim 4, the partial character selection determining means determines that the partial character is selected if the target selection ratio of the partial character is equal to or more than a predetermined target selection reference value, and the predetermined partial character is selected. If it is less than or equal to the target selection reference value, it is determined that the partial character is not selected. According to the invention of claim 5, the partial character selection determining means determines the target selection criterion when determining another partial character if at least one of the partial character groups forming one character data is selected. Lowering the value makes it easier for other subcharacters to be selected.

According to the invention of claim 6, the partial character reconstructing means reconstructs the partial character group determined to be selected by the partial character selection determining means and the partial character group determined not to be selected as one character data. To do. According to the invention of claim 7, the second partial character selection determining means determines that a part of the partial characters is selected when the calculated selection range ratio is equal to or greater than a predetermined selection range reference value. The handwriting selection means, when it is determined that a part of the partial characters is selected, makes a selection determination for each handwriting that constitutes the partial character, and detects the selected handwriting group as a new partial character. Cut and select.

The inventions of claims 8 to 11 have the same operations as the inventions of claims 1 to 4.

[0023]

1 is a block diagram of an embodiment of a handwritten character selection device of the present invention. The handwritten character selection device includes a handwritten data input unit 1, a handwriting data / selection range data path switching unit 2, a handwriting drawing data creation unit 3, a character inspection unit 4, a character data storage unit 5, a selection area creation unit 6, and a target. Selection ratio / selection range ratio calculation means 7, target selection determination means 8, coordinate projection data storage unit 9, partial character division means 10,
Partial character reconstructing means 11, edit target selection buffer 12,
It is composed of editing means 13 and display means 14. The editing means 13 is means for editing the character data selected by the present invention, and is not a component of the character selection device.

The handwritten data input means 1 is composed of a combination of a tablet device and a pen type pointing device. While the pen-type pointing device is touching the tablet device, the coordinate data representing the contact position of the pen-type pointing device is sent to the handwriting data / selected range data path switching means 2 at fixed intervals or variable intervals. The point sequence data of the coordinates from when the pen-type pointing device touches the tablet device until it leaves is called handwriting data.

The handwriting data / selection range data path switching means 2 is a switching device for causing the handwriting data input means 1 to function also as means for inputting a selection range, and has two modes, a handwriting data input mode and an editing mode. Have. Specifically, in the input mode, the point sequence data sent from the handwriting data input means 1 is sent to the handwriting drawing data creation means 3 and the character inspection means 4. In the edit mode, it is sent to the selection area creating means 6.

The handwriting drawing data creating means 3 creates the handwriting drawing data which is the data for displaying continuous handwriting on the display means 14 by interpolating between the points of the received handwriting data which is the point sequence data. When receiving the point sequence data sent from the handwriting data input means 1,
Alternatively, when the character data stored in the character data storage means 5 is updated by an editing operation, handwriting drawing data is created and sent to the display means 14.

The character inspection means 4 inspects the received handwriting data group character by character and line by character, and the character data storage means 5
Notify the handwriting data, character delimiters, and line delimiters to. A conventional technique is used for the method of inspecting the handwriting data group for each character or each line. The character data storage unit 5 stores the handwriting data group cut out in character units by the character checking unit 4 and a character circumscribing rectangle that is a rectangle that includes the entire handwriting data group in association with each other as character data. Further, the character inspection means 4 stores a collection of character data which is inspected line by line as line data and stores it as line data in line units. Specifically, FIG. 2 shows an example of the stored contents of the character data storage means 5. Here, the handwriting data group cut out line by line and character by line by the character cutoff unit 4 is hierarchically stored. The hierarchy is line data 201 and 2 composed of line-by-line handwriting data.
, ..., character data 209, 210, ... composed of handwriting data in units of one character, and handwriting data 216, 217 ,. In the figure, the arrow indicates that the pointer information is connected,
An arrow indicated by a broken line indicates that the point pointed by the pointer is omitted.

In the row data 201, the circumscribed rectangle information 2
Reference numeral 04 is information about a line circumscribing rectangle that encloses all handwriting data belonging to the line data, and is generally expressed by coordinate data of the upper left corner of the rectangle and coordinate data of the lower right corner of the rectangle, that is, diagonal coordinate data. To be done. The number of characters 205 is information on the number of character data items belonging to the line data. The pointer 206 to the character data is pointer information to the head of the character data group belonging to the line data. The pointer 207 to the preceding line is pointer information to the preceding line data when there are plural lines of data. If the row data is at the beginning of the row data group, no value is set. The pointer 208 to the next line data is pointer information to the next line data when there is a plurality of lines of data. If the row data is at the end of the row data group, no value is set.

In the character data 209, the circumscribing rectangle information 211 is information on a circumscribing rectangle of a character that includes all handwriting data belonging to the character data. 21 handwriting data
2 is information on the number of handwriting data belonging to the character data. The pointer 213 to the handwriting data is pointer information to the head of the handwriting data group belonging to the character data.
The pointer 214 to the previous character data is pointer information to the previous character data when there is a plurality of character data in one line data. If the character data is at the beginning of the character data group, no value is set. The pointer 215 to the next character data is pointer information to the next character data when there is a plurality of character data. If the character data is at the end of the character data group, no value is set.

In the handwriting data 216, the number of coordinate points is 21.
8 is information on the number of coordinate data in the handwriting data.
The pointer 219 to the next handwriting data is pointer information to the next handwriting data when plural pieces of handwriting data exist in one character data. If the handwriting data is at the end of the handwriting data group, no value is set. Coordinate data group 2
Reference numeral 20 is a collection of coordinate data that constitutes handwriting data. When a handwriting is drawn on the screen, one handwriting is displayed by interpolating the coordinate data with a straight line or the like. The number of coordinate data in one handwriting data is variable.

The selection area creating means 6 receives the selection range instruction input from the handwriting data input means 1 in the edit mode, and creates a selection area area which is an area for selecting characters. Specifically, it is as follows. For example, first, handwriting data such as an X mark and a surrounding line written by a pen type pointing device is received. When the received handwriting data is the x mark, a rectangle defined based on the maximum value and the minimum value of the x mark at the x coordinate and the maximum value and the minimum value of the y coordinate is set as the selection range area. When the received handwriting data is an enclosing line, it is possible to set the area surrounded by the closed curve as the selection range area. In the description of this embodiment, the former rectangle is used as the selection range area.

Target selection ratio / selection range ratio calculation means 7
The target selection determination unit 8 calculates the target selection ratio and the selection range ratio according to an instruction from the target selection determination unit 8 described later, and notifies the target selection determination unit 8. Here, the target selection ratio is the character data storage means 5
The overlapping area of the character circumscribing rectangle associated with the character data to be inspected stored in
It is the value divided by the area of the rectangle circumscribing the character. Similarly, the selection range ratio is a value obtained by dividing the overlapping area of the character circumscribing rectangle and the selection range area by the area of the selection range area. If the inspection target is line data or handwriting data, the target selection ratio is also obtained for the line data or handwriting data.

The object selection judgment means 8 sequentially inspects all the character data stored in the character data storage means 5 and selects whether or not the inspection character data to be inspected is selected. , Or whether to divide into partial characters. When it is determined that the inspection character data is further selected, the inspection character is stored in the edit target selection buffer 12 described later, and when it is determined that the inspection character data is not selected, the next character data stored in the character data storage means 5 is inspected. However, when it is determined that the character is divided into the partial characters, the partial character dividing means 10 to be described later is activated. Whether to select, not to select, or to divide into partial characters is determined based on the target selection ratio received from the target selection ratio / selection range ratio calculation means 7. The details are shown in the flowchart shown in FIG. 3, and will be described later in the operation.

The coordinate projection data storage unit 9 stores coordinate projection data temporarily created when the partial character dividing means 10 described later divides the inspection character data into partial characters. The coordinate projection data is data extracted from the handwriting data group belonging to the character data and corresponds to each handwriting data. Specifically, as an example of the coordinate projection data, as shown in FIG. 6, the projection coordinate minimum value MIN 604 and the projection coordinate maximum value M
AX 605 and pointer 606 to front coordinate projection data
And a pointer 607 to the next coordinate projection data. Here, the arrow indicates that the pointer information is connected, and the broken arrow means that the subsequent information is omitted. Minimum projection coordinates MIN604
Is the minimum value of the values obtained by projecting the coordinate data in the handwriting data on the X axis or the Y axis. Specifically, the projection coordinate minimum value MIN obtained by projecting on the X axis is the value of the X axis component having the minimum value in the coordinate data.
Similarly, the minimum projection coordinate value MIN obtained by projecting on the Y axis
Is the value of the Y-axis component that takes the minimum value in the coordinate data. The maximum projected coordinate value MAX 605 is the maximum value among the values obtained by projecting the coordinate data in the handwriting data on the X axis or the Y axis. Specifically, the projected coordinate maximum value MAX obtained by projecting on the X axis is the value of the X axis component having the maximum value in the coordinate data. The minimum projected coordinate value MIN604 and the maximum projected coordinate value MAX605 are the minimum and maximum values of the X coordinate value of the coordinate data forming the handwriting data if the character data divided into the partial characters belongs to the horizontal line data. A value is set, Y for vertical writing
The minimum and maximum coordinate values are set. The pointer 606 to the previous coordinate projection data is pointer information to the previous coordinate projection data when there are a plurality of coordinate projection data. The pointer 607 to the next coordinate projection data is pointer information to the next coordinate projection data when there are a plurality of coordinate projection data. A pointer 606 to the previous coordinate projection data and a pointer 6 to the next coordinate projection data
07 is updated when new coordinate projection data is created, when the coordinate projection data is discarded, or when the connection order is changed. When the new coordinate projection data is created, it is connected after the last coordinate projection data, and when the coordinate projection data is discarded, the pointers of the front and rear coordinate projection data are connected.

The partial character dividing means 10 divides the inspection character data which the object selection judging means 8 judges to be divided into partial characters into partial characters, and notifies the object selection judging means 8 of the divided partial character data. The division into the partial characters is specifically performed according to the flows shown in FIGS. 7 and 8. The flow will be outlined below. First, the coordinate projection data shown in FIG. 6 is created based on the handwriting data group belonging to the inspection character (steps S411 to S418). Next, the created coordinate projection data is sorted in ascending order of the projection coordinate minimum value MIN (step S419). It is determined whether or not the range of the inspection coordinate projection data and the range of the next coordinate projection data overlap (step S420 to step S422). Here, the range of the coordinate projection data is a range of values from the minimum projection coordinate value MIN to the maximum projection coordinate value MAX. If they overlap, the value of the maximum projection coordinate value MAX of the inspection coordinate projection data is updated with the value of the maximum next projection data value MAX. Further, the secondary coordinate projection data is deleted (step S423). In this way, when the ranges of the coordinate projection data overlap, the inspection coordinate projection data and the next coordinate projection data are linked. Next, the handwriting data group belonging to the range of the combined one piece of coordinate projection data is combined into one piece of partial character data (steps S425 to S427). This is performed for all coordinate projection data (steps S428 and S430). In this way, the inspection character data is divided into partial characters. Further details will be described in the operation described later.

The partial character reconstructing means 11 reconstructs the selected partial character group to create one character data when the object selection judging means 8 makes a selection in the unit of partial characters, and selects it. The partial character group that has not been created is also reconstructed to create another character data. The created character data is notified to the character data storage means 5. The edit target selection buffer 12 stores the character data selected by the target selection determination means 8. However, when the stored character data is further edited by the editing means 13 which will be described later, the content of the stored character data is updated by notifying the character data storage means 5. For example, in FIG. 9D, when the edit processing for deletion is performed after the character data 819 is stored in the edit target selection buffer 12, the content of the character data storage means 5 is deleted. To update. Further, it has a partial character buffer for storing the partial characters divided by the partial character dividing means 10.

The editing means 13 performs editing such as deletion and movement of the character data stored in the edit target selection buffer 12 according to a user's instruction in the edit mode. As this means, those conventionally used are used. Display means 14
Receives the handwriting drawing data from the handwriting drawing data creating means 3 and displays the handwriting on the screen. For example, it is realized by a liquid crystal display device integrated with a tablet device.

The character selection operation of the handwritten character selection device configured as described above will be described with reference to the flowcharts of FIGS. 3, 4, 5, 7, and 8 and FIG. In Fig. 9 (a), the user has three choices: "pine", "bamboo", and "ume".
Although a character has been input, the character selection device fails to cut it out, and while the character selection device recognizes it as two characters as shown in the character data 802 and the character data 803, the user should delete the character "pine". This indicates that the selection range area 804 is designated by the “x” gesture. It can be seen that the selection range area 804 is incompletely specified and the upper end of the character "pine" is out of the selection range area. The line data 801 is composed of character data 802 and character data 803.

For simplification of description, the data stored in the character data storage means 5 is the line data 801.
There shall be nothing other than what constitutes a. In FIG. 3, the head 801 of the row data that is managed first
Is an inspection line (step S301). Next, the target selection ratio for the inspection row is calculated (step S302). Since the calculated target selection ratio is 0 or more because the circumscribed rectangle of the line data 801 and the selection range area 804 overlap (step S303), the head of the character group forming the check line is set as the check character. (Step S304). Specifically, the character data 802 is used as the inspection character. 0.9 is set as the target selection reference value, and the target selection ratio for the inspection character is calculated (steps S305 and S3).
06). The target selection ratio calculated here is 0 or more because the area where the circumscribing rectangle of the character data 802 and the selection range area 804 overlap is divided by the circumscribing rectangle of the character data 802 (step S307). It is clearly 0.9 or less (step S308). Therefore, the subroutine partial character selection determination process shown in FIG. 4 is performed (step S309).

In the subroutine partial character selection determination process shown in FIG. 4 below, first, a subroutine partial character division process is performed (step S315). Here, the subroutine partial character division process is a feature of the present invention, and will be described later. Partial characters 816, 817, 8 in FIG.
18 is a result of dividing the character data 802 into partial characters by the subroutine partial character dividing process. Next, the target selection reference value is set to 0.7, and the inspection partial character is set to the partial character 816 which is the head of the partial character group obtained by the subroutine partial character division processing (step S316). The target selection ratio of the inspection partial character 816 is calculated, and it is determined whether the calculated target selection ratio is greater than or equal to the target selection reference value (step S317, step S318). In this case, as shown in FIG.
Since the range in which the selection area 804 overlaps the circumscribed rectangle of the partial character 816 is 70% or more and the target selection ratio is 0.7 or more, the inspection partial character 816 is stored in the partial character selection buffer (step S319). . Next, the target selection reference value is reduced from 0.7 to 0.6 (step S32
0). This loosens the reference when selecting other partial characters in the same character data, and makes it easier to select other partial characters. Next, since there is a partial character 817 next to the inspection partial character 816, the partial character 817 is set as the inspection partial character (step S321, step S321).
322). The same processing as the previous time is performed, and the calculated target selection ratio is 0.6 or more (steps S317 and S318), so the partial character 817 is also stored in the partial character buffer (steps S319 and S320). Further, similar processing is performed on the next partial character 818. However, when the inspection partial character is 818, it does not overlap with the selection area 804, so the target selection ratio calculated in step S317 is 0 (step S317). S321, step S
322, step S317). Therefore, the target selection ratio is smaller than 0.6 which is the target selection reference value (step S
318) and the selection range ratio is calculated (step S32).
3). The calculated selection range ratio is 0 because there is no overlapping portion. Next, the selection range reference value is calculated (step S324). The selection range reference value is calculated as follows, where the larger one of the width and height of the selection range region is max and the smaller one is mim.

Selection range reference value = min ÷ max × 0.8 In this case, since the selection range region 804 has a slightly laterally long shape,
The selection range reference value is about 0.7. Since the selection range ratio is 0 here, it is determined that it is smaller than the calculated selection range reference value (step S325). Step S3
The process proceeds to 26 when the selection range ratio is larger than the calculated selection range reference value. In that case, a subroutine handwriting selection process, which is a selection process in units of handwriting, is started. The subroutine handwriting selection processing will be described later.

Next, since the next partial character of the inspection partial character 818 does not exist (step S321), the partial character selection buffer is checked, and since the partial characters 816 and 817 exist, they are reconstructed as one character data 819. Then, the character data storage means 5 is notified and the character data is stored in the edit target selection buffer 12 (step S32).
7). The reconstructed character data 819 is shown in FIG. On the other hand, the partial character 818 not selected is reconstructed as the character data 820, and the character data storage means 5
(Step S328). The reconstructed character data 820 is shown in FIG. This is the end of the subroutine partial character selection determination process, so step S
Control returns to 311.

In step S311, it is determined whether or not there is character data stored next to the check character 802. In this case, since the character data 803 exists, the character data 803 is set as the inspection character (step S31).
2). As shown in FIG. 9A, since the selection range area 804 and the inspection character 803 do not overlap, the target selection ratio is 0.
(Steps S305 to S307). Therefore, the process proceeds to step S311, and since character data does not exist after the inspection character 803, it is determined whether there is line data next to the inspection line (step S313). Since there is no line data other than the inspection line 801, the character selection determination process ends.

After that, the editing means 13 is activated. Since the character data 819 exists in the edit target selection buffer 12, the editing means 13 deletes and edits the character data 819 and notifies the character data storage means 5. The character data storage means 5 is notified of the deletion of the character data 819, and sends the character data 8 to the handwriting drawing data creation means 3.
By instructing to create handwriting drawing data after deleting 19, and displaying on the display means 14, an editing result as shown in FIG. 9E is obtained.

Next, the subroutine partial character division processing will be described with reference to the flow charts of FIGS. 7 and 8 and the character data 802. The sub-routine partial character division process is a subroutine started in step S315 of the sub-routine partial character selection determination process shown in FIG. If the inspection character is the character data 802, first, the inspection character 802
The writing direction of the row data 801 to which the is written is determined (step S411). In this case, the shape of the circumscribed rectangle of the line data 801 is horizontally long, and the character data 802 and the character data 803 are also horizontally arranged, so it is determined to be horizontal writing. Next, the number of handwriting data of the inspection character 802 is set to the number of coordinate projection data and the number of partial character data, and further the leading handwriting data forming the inspection character is set to the inspection handwriting (steps S412 and S413). In this case, the inspection character 802 is the handwriting data 805 to 805 as shown in FIG.
Since it is composed of 11 pieces of 815, both are set to 11. In the inspection handwriting, the handwriting data 805 at the head of the inspection character 802 is set. Since it is already determined in step S411 that the line data 801 is horizontal writing, one piece of coordinate projection data 601 shown in FIG. 6 is created, and the X of the handwriting data 805 which is the inspection handwriting is created in the minimum projected coordinate MIN604.
Set the minimum coordinate data and set the maximum projected coordinate MAX60.
5 is set to the maximum value of the X coordinate data of the handwriting data 805 (step S415). Since there is only one piece of coordinate projection data 601 at this point, nothing is set in the pointers 606 and 607 of the coordinate projection data, but when other coordinate projection data is created thereafter, pointer information Is set and a list of coordinate projection data is created. Next, it is determined whether or not there is handwriting data next to the inspection handwriting 805 belonging to the character data 802 (step S417). In this case, since the handwriting data 806 exists, the next coordinate projection data 602 is similarly created (steps S414 to S418). The above process is repeated until there is no more handwriting data (step S414 to step S418). Then, eleven coordinate projection data corresponding to each handwriting data are created. For the following description, the coordinate projection data corresponding to the handwriting data 805 to 815 will be referred to as P805 to P815.

Next, the created coordinate projection data list is sorted in ascending order of the minimum projection coordinate value MIN (step S).
419). For example, the coordinate projection data P810 is created before the coordinate projection data P811, and is arranged in the order of creation on the list, but the projection coordinate minimum value MIN is smaller in P811, so the order in the list should be changed. Become. Minimum projection coordinate value MIN of all coordinate projection data
Are checked and the order is changed, P807, P805,
P806, P808, P811, P809, P810,
The coordinate projection data are arranged in the order of P812, P813, P814, and P815.

Next, the head of the coordinate projection data list is set to the inspection projection data (step S420). In this case, the coordinate projection data P80 corresponding to the handwriting data 807
7 is set. It is determined whether there is coordinate projection data next to the inspection projection data P807 (step S42).
1). In this case, since the next coordinate projection data 805 exists, the projection coordinate minimum value M of the inspection projection data P807 is
IN (hereinafter referred to as MIN value) and maximum projection coordinate value MAX
It is determined whether or not the range (hereinafter referred to as the MAX value) and the range of the MIN value and the MAX value of the next coordinate projection data P805 overlap (step S422). P8
Since the MAX value of 07> MIN value of P805, it is determined that they overlap. If it is determined that they overlap,
The MAX value of the inspection projection data P807 is set to the MAX value of the coordinate projection data P807 and the MAX value of the next coordinate projection data 805.
The larger of the values, in this case the MAX value of P805 is updated. Further, the coordinate projection data P805 is deleted from the coordinate projection data list, and the number of partial character data is decremented by 1 (step S423). As a result, since the coordinate projection data P807 and P805 have overlapping ranges, they are linked to form one coordinate projection data. The same process is repeated (steps S421 to S423),
Coordinate projection data P808 to P805 are connected. P8
08 is deleted (step S423), and when the next coordinate projection data of the inspection projection data becomes P811, since the range of the inspection projection data and the range of P811 do not overlap (step S422), the coordinates are added to the inspection projection data. The projection data P811 is set. By the processing up to this point, the coordinate projection data P805 is added to the coordinate projection data P807, P805, P.
806 and P808 are connected. Similar processing is repeated for new inspection projection data P811 (steps S421 to S423). By this process, the coordinate projection data P811 is converted into the coordinate projection data P80.
9, P810 and P812 are connected. Then, when the next coordinate projection data of the inspection projection data becomes P813, the inspection projection data range and the range of P813 do not overlap (step S422), so the coordinate projection data P813 is set in the inspection projection data, and Is repeated (steps S421 to S424). By this processing, the coordinate projection data P813 is added to the coordinate projection data P81.
4, P815 are connected. When P815 is linked,
The coordinate projection data next to the inspection projection data does not exist (step S421). At this point, the coordinate projection data is P
There are three, one connected to 807, one connected to P811, and one connected to P813. For convenience of explanation, these coordinate projection data will be referred to as PD1, PD2, and PD3, respectively.

Since it is determined in step S421 that the next coordinate projection data does not exist, the partial character data is created by the number of partial character data (step S425). This partial character data has the same data structure as the character data 209. Since the number of partial character data is 3,
Three pieces of partial character data are also created. The created partial character data is 816, 817, and 818. Further, the handwriting data 805 which is the head of the handwriting group forming the inspection character is set as the inspection handwriting (step S426).

Next, the MIN and MAX values of the finally remaining three coordinate projection data PD1, PD2, PD3 are compared with the X coordinate data of the inspection handwriting, and the inspection handwriting is connected to the created partial character data (step S427). Specifically, since the range of the X coordinate data of the inspection handwriting 805 exists between MIN and MAX of the coordinate projection data PD1, the inspection handwriting 805 is connected to the partial character data 816. In this case, since there is no other handwriting data in 816, the inspection handwriting 805 is set to the pointer to the handwriting data in 816. When the handwriting data is connected to 816 thereafter, it is sequentially connected to the pointer to the next handwriting data in the handwriting data referred to by the pointer to the handwriting data. Next, the circumscribed rectangle information of the partial character data 816 is updated so that all the coordinate data of the handwriting data 805 is included,
Further, the number of handwriting data is incremented by 1 (step S428). It is determined whether handwriting data is stored next to the inspection handwriting 805. In this case, since the handwriting data 806 exists, it is newly set as the inspection handwriting 806 (steps S429 and S430).

Next, the same processing is performed and repeated until the inspection handwriting becomes the handwriting data 815 (steps S427 to S427).
430). As a result of performing such processing, handwriting data 80
5 to 808 are determined to be included in the coordinate projection data PD1 and are connected to the partial character data 816. The handwriting data 809 to 812 are determined to be included in PD2,
It is linked to the partial character data 817. Handwriting data 81
3 to 815 are determined to be included in PD3 and are connected to the partial character data 818. When the inspection handwriting becomes the handwriting data 815, the subroutine partial character division processing ends, and the control returns to the subroutine partial character selection determination processing.

Next, the subroutine handwriting selection processing shown in FIG. 5 will be described. The subroutine handwriting selection process is
Step S326 of the subroutine partial character selection determination processing
Started by First, the leading handwriting data forming the inspection partial character is set in the inspection handwriting (step S328). Next, a rectangle that circumscribes the inspection handwriting is created by referring to the coordinate data information that composes the inspection handwriting, and the overlapping area of the inspection handwriting circumscribing rectangle and the selection range area is divided by the inspection handwriting circumscribing rectangular area. Calculate the ratio (step S32)
9). It is determined whether the calculated target selection ratio is equal to or higher than the target selection reference value, and if it is equal to or higher than the target selection reference value, the inspection handwriting is set in the handwriting selection buffer (step S33).
3, step S331). Next, it is judged whether or not there is handwriting data next to the inspection handwriting (step S332), and if there is the next handwriting data, the next handwriting data is set in the inspection handwriting (step S333), and the next handwriting data is lost. The same processing is repeated until (step S329 to step S329).
333). If there is no next handwriting data, if there is a handwriting data group in the handwriting selection buffer, these are integrated as one partial character and set in the partial character selection buffer (step S334). Further, the handwriting data not selected is reconstructed as a partial character (step S335).
Thus, the subroutine handwriting selection processing is completed, and the control is returned to step S321 of the partial character selection determination processing.

The target selection reference value for character data is 0.9, the target selection reference value for partial character data is 0.7, and the target selection reference value for a partial character when at least one partial character is selected is 0. However, this value may be arbitrarily specified by the user. In the subroutine partial character selection determination process shown in FIG. 4, when a partial character is selected, the target selection reference value is set to 0.
The number is changed from 7 to 0.6, but it may be changed first instead of from that time and prior to the processing. Specifically, prior to the processing, the target selection ratios of all the partial characters are compared with the target selection reference value of 0.7, and if any one of the partial characters is larger than the target selection reference value condition value, the target selection criterion is found. The value is changed to 0.6, and then the process is performed using the changed target selection reference value.

Further, the data stored in the character data storage means 5 is converted into line data, character data, and handwriting data.
Although the number of layers is set, the number of layers to be stored is not limited. Further, in the sub-partial character division processing, the coordinate projection data that overlaps as much as possible is connected, but the degree of overlap between the coordinate projection data may be calculated, and if it is equal to or larger than a predetermined value, it may be connected.

Although the envelope figure of the character is rectangular, a circle or a polygon may be used as the envelope figure of the character depending on the shape of the character.

[0055]

As described above, according to the invention of claim 1,
When it is determined that a part of the character data is selected, the partial character forming means forms a partial character using the handwriting data belonging to the character data, and further determines whether or not the partial character is selected. Since the partial character selection determination means makes a determination, it is possible to select the edit target as intended by the user even when the edit range cannot be correctly specified for the handwritten character data that has not been cut into correct character units. .

According to the second aspect of the present invention, the partial character forming means includes a line direction determining section, an X coordinate range calculating section, a first partial character forming section, a Y coordinate range calculating section, and a second partial character forming section. Since partial characters are configured by having and, for handwritten character data that is not cut off in correct character units,
Even when the edit range cannot be specified correctly, the edit target can be selected as intended by the user.

According to the invention of claim 3, the target selection ratio calculation means calculates the target selection ratio, and the target selection determination means uses the calculated target selection ratio, the target selection reference value and the non-selection reference value. Since the determination is made accurately, it is possible to select the edit target as intended by the user even when the edit range cannot be correctly specified for the handwritten character data that has not been cut into correct character units.

According to the fourth aspect of the invention, the partial character selection determining means more accurately determines the selection of the partial character by using the target selection reference value. Therefore, the handwritten character which is not cut into correct character units is not used. Even when the edit range cannot be specified correctly for the data, the edit target can be selected as intended by the user. According to the invention of claim 5, the partial character selection determining means lowers the target selection reference value if at least one of the partial character groups forming one character data is selected. This has the effect of making it easier to select.

According to the invention of claim 6, since the partial character reconstructing means is provided, the partial character group judged to be selected by the partial character selection judging means and the partial character judged not to be selected. Each group can be reconstructed as one character data. According to the invention of claim 7, when the calculated selection range ratio is equal to or more than a predetermined selection range reference value, it is determined that a part of the partial character is selected, and each handwriting data forming the partial character is determined. On the other hand, the selection determination is performed and the selected handwriting group is cut off as a new partial character, so that the editing target can be selected in units of handwriting smaller than the unit of partial characters.

The inventions of claims 8 to 11 have the same effects as the inventions of claims 1 to 4.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a handwritten character selection device of the present invention.

FIG. 2 is a diagram showing an example of contents stored in a character data storage unit 5.

FIG. 3 is a diagram for explaining a character selection operation of the handwritten character selection device.

FIG. 4 is a flowchart of a subroutine partial character selection determination process.

FIG. 5 is a flowchart of a subroutine handwriting selection process.

FIG. 6 is a diagram showing an example of coordinate projection data.

FIG. 7 is a flowchart of a subroutine partial character division process.

FIG. 8 is a continuation of FIG. 7;

FIG. 9 is a diagram for explaining the operation of the present invention.

FIG. 10 is a diagram for explaining the operation of the conventional technique.

FIG. 11 is a diagram for explaining the operation of the related art.

[Explanation of symbols]

 1 Handwriting Data Input Means 2 Handwriting Data / Selection Range Data Path Switching Means 3 Handwriting Drawing Data Making Means 4 Character Inspection Means 5 Character Data Storage Means 6 Selection Area Making Means 7 Target Selection Ratio / Selection Range Ratio Calculation Means 8 Target Selection Judgment Means 9 Coordinate projection data storage unit 10 Partial character dividing unit 11 Partial character reconstructing unit 12 Editing target selection buffer 13 Editing unit 14 Displaying unit

Claims (11)

[Claims] 1. A device for selecting handwritten handwriting data on a character-by-character basis, the handwriting data group being input as coordinate data and cut off on a character-by-character basis, and a character envelope figure that is a figure containing the handwriting data group. And a character data storage means for storing as character data in association with each other, a display means for displaying each character on the screen based on the stored handwriting data group, and an object to be edited based on the display content of the display means. Using a selection range receiving means for receiving an input of a selection range, and the selection range and the character envelope figure, which character is selected from all the character data stored in the character data storage means. Judgment means for judging whether all or some of the characters of the character data are selected and a part of the characters of the character data are selected. If it is determined that the maximum coordinate value of the coordinate data of one handwriting data and the minimum coordinate value of the other handwriting data of all the handwriting data belonging to the character data are determined by a predetermined procedure. By using the partial character forming means for forming each partial character by sequentially connecting the handwriting data whose comparison results have a predetermined relationship in a chained manner and each partial character formed and the selection range, A handwritten character selection device comprising: a partial character selection determining means for determining whether a partial character is selected. 2. The partial character forming means, when the determining means determines that a part of the characters of the character data is selected, determines whether the line to which the character data belongs is horizontal writing or vertical writing. A line direction determination unit that determines whether there is a coordinate range calculation unit that determines a range indicated by the maximum coordinate value and the minimum coordinate value in the line direction determined by the line direction determination unit for each of the handwriting data that belongs to the character data. The handwritten character selection device according to claim 1, further comprising: a partial character forming unit that forms a partial character by connecting pieces of handwriting data in which the coordinate ranges calculated by the coordinate range calculating unit overlap each other. . 3. The handwritten character selection device further comprises a target selection ratio calculation means for calculating a target selection ratio which is a value obtained by dividing an area where the character inclusion graphic and the selection range overlap by the area of the character inclusion graphic. The determining unit determines whether the target selection ratio of the character data is equal to or larger than a predetermined target selection reference value, the first selection determination unit that determines that the entire character of the character data is selected, and the target selection ratio of the character data. A second selection determination that is smaller than a predetermined target selection reference value and is larger than a predetermined non-selection reference value that is a reference for determining that the character is not selected The handwritten character selection device according to claim 1 or 2, further comprising a section. 4. The target selection ratio calculation means further comprises a partial character envelope graphic creating unit for creating a partial character envelope graphic based on a handwriting data group belonging to the constructed partial characters, and a partial character envelope graphic creating unit. The target character selection ratio calculating unit for calculating a target selection ratio, which is a value obtained by dividing an overlapping area of the created partial character envelope graphic and the selection range by the area of the partial character envelope graphic, is provided. 4. The handwritten character selection device according to claim 3, further comprising a determination unit that determines that the partial character is selected only when the target selection ratio of is equal to or greater than a predetermined target selection reference value. 5. The partial character selection determining means lowers a target selection reference value when determining another partial character if at least one of partial character groups forming one character data is selected. The handwritten character selection device according to claim 4, wherein. 6. The handwritten character selection device further reproduces a partial character group determined to be selected by the partial character selection determination means and another partial character group not selected as one character data. The handwritten character selection device according to any one of claims 1 to 5, further comprising a partial character reconfiguration updating unit configured to update the stored contents of the character data storage unit. 7. The handwritten character selection device further divides an area where the partial character envelope figure of the partial character determined not to be selected by the partial character selection determination unit and the selection range overlap by the area of the selection range. A selection range ratio calculating means for calculating a selection range ratio which is a value; and a second judgment that a part of the partial characters is selected when the calculated selection range ratio is equal to or larger than a predetermined selection range reference value. Partial character selection determination means, and when it is determined that part of the partial character is selected,
5. A handwriting selecting unit that performs selection determination for each handwriting data that forms a partial character, and cuts and selects the selected handwriting data group as a new partial character. Item 5. The handwritten character selection device according to any one of items 5. 8. A character data storage means for storing, as character data, a handwriting data group inputted as coordinate data and cut out in character units, and a character envelope figure which is a figure including the handwriting data group in association with each other. , Handwritten character selection including display means for displaying each character on the screen based on the stored handwriting data group, selection range receiving means for receiving an input of the selection range, and control means for controlling the respective means A method for selecting handwritten characters in a device, comprising a display step of displaying each character on a screen based on a stored handwriting data group, and a selection range for selecting an edit target based on the display content of the display means. Using the selection range receiving step of receiving an input and the selection range and the character envelope figure stored in the character data storage unit, the character data storage unit Using the first determination step of determining which character is selected from all the character data stored in, and the selection range and the character envelope figure stored in the character data storage means, A second determination step of determining whether all or some of the characters of the character data determined to be selected are selected, and that some of the characters of the character data are selected. If determined, for all handwriting data belonging to the character data, the maximum coordinate value of the coordinate data of one handwriting data and the minimum coordinate value of another handwriting data are compared in a predetermined procedure, Which partial sentence is formed by using the partial character constructing step of constructing each partial character by sequentially connecting handwriting data in a predetermined relationship, and each constructed partial character and the selection range. Handwritten character selection method characterized by but has a partial character selection judgment step of judging whether it is selected. 9. The partial character forming step, if the character string of the character data is judged to be selected in the second judging step, whether the line to which the character data belongs is in horizontal writing. A line direction determination step of determining whether the line is vertical writing, and a coordinate range for obtaining a range indicated by the maximum coordinate value and the minimum coordinate value in the line direction determined by the line direction determination unit for each of the handwriting data to which the character data belongs 9. The handwriting according to claim 8, further comprising: a calculation step; and a partial character configuration step of configuring a partial character by connecting handwriting data in which the coordinate ranges calculated by the coordinate range calculation section overlap each other. Character selection method. 10. The handwritten character selection method further comprises:
Prior to the processing of the determination step, a target selection ratio calculation step of calculating a target selection ratio that is a value obtained by dividing an area where the character envelope shape and the selection range overlap by the area of the character envelope graphic is provided, and the determination step includes: If the target selection ratio is greater than or equal to the predetermined target selection reference value, the first selection determination step of determining that the entire character of the character data is selected, and the target selection ratio of the character data is greater than the predetermined target selection reference value. A second selection determination step of determining that a part of the characters of the character data is selected if the size is smaller and larger than a predetermined non-selection reference value that is a reference not to be selected. The handwritten character selection method according to claim 8 or 9. 11. The target selection ratio calculating step comprises: a partial character envelope figure creating step of creating an envelope figure based on a handwriting data group belonging to the constituted partial characters; and an envelope created in the partial character envelope figure creating step. The method includes a target selection ratio calculating step of calculating a target selection ratio that is a value obtained by dividing an overlapping area of the figure and the selection range by the area of the envelope figure. 11. The handwritten character selection method according to claim 10, further comprising a determination step of determining that the partial character is selected only when it is equal to or more than a selection reference value.