JPH081659B2 - Image file device registration image correction method - Google Patents

Description

The present invention relates to a registered image correction method for an image filing device, and in particular, it is possible to easily correct a registered image.
The present invention relates to a registered image correction method for an image filing apparatus, which enables correction of a registered image without causing image quality deterioration and is excellent in consistency with practice in updating design drawings and the like.

[Prior Art] As disclosed in Japanese Patent Laid-Open No. 63-167569, a conventional image filing apparatus registers an image captured by a scanner in a reduced size in order to increase the search speed of registered images.
The reduced image is read out and searched, and after the search is completed, an unreduced image is reproduced to provide an image with excellent image quality. However, no consideration was given to correcting registered images.

[Problems to be Solved by the Invention] In the above-mentioned conventional technique, although the original image restoration and the speed at the time of retrieval are taken into consideration, the process at the time of correcting the registered image, which is indispensable in the original image management system, is considered. Was not done.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to easily correct the registration image, without degrading the image quality of the registration image, and making it unnecessary to store the original image of the registration image. The purpose of the invention is to provide registration image correction of an image file device which is highly consistent with practice in updating design drawings and the like.

[Means for Solving the Problems] Further, the registered image correction method of the image file device of the present invention prints out the image registered in the image file device, corrects the image printed out, and corrects the image. The image information of the corrected portion and its peripheral portion is stored in the electronic file device, and the image information of the uncorrected image and the corrected image are subjected to pattern matching, and the image area of the corrected portion and its peripheral portion is corrected. The image information of the image and the image information of the corrected image are replaced, and the image information obtained by the replacement is registered.

Further, in the registered image correction method of the image file device, pattern matching between the image before correction and the image after correction is performed for the image area of the above-mentioned corrected portion and its peripheral portion, image information of the image before correction and image information of the image after correction. It is judged that the pattern matching was taken at the position where the total value of the exclusive ORs is the minimum. Further, in the registered image correction method of the image file device, pattern matching between the image before correction and the image after correction for the image area of the above-mentioned corrected portion and its peripheral portion is printed in advance at a predetermined position on the paper on which the image is printed out. It is also possible to use a positioning mark that is used.

[Operation] According to the present invention, according to the registered image correction method of the image filing apparatus, since the image information is replaced only in the corrected portion and the peripheral portion thereof, even if the registered image is corrected, the image quality deteriorates. do not do. Moreover, the pattern matching between the image before correction and the image after correction is performed by taking the exclusive OR of the image information, or by using the positioning mark printed on the paper, or by using both of them together. It can be performed with high accuracy. Moreover, the present invention prints out the registered image of the image file device, corrects the printed out image, and updates the registered image of the image file device. This work is necessary for updating the design drawings and the like. And is highly consistent with practice.

EXAMPLES The present invention will be described in more detail with reference to the examples shown in the accompanying drawings.

FIG. 1 is a diagram showing an example of an image filing apparatus to which the present invention is applied, and its operation will be described by taking a new image registration as an example. In FIG. 1, the scanner 1 takes in an original image, photoelectrically converts it, and after illuminance correction, it is input to a binarization circuit 7 and converted into black and white binary information. The binarized image information is stored in the display memory 5 via the display control unit 4. The image information accumulated in the display memory 5 is displayed on the display unit 6. For the displayed image information, the operator confirms the image quality (shading etc.) and the image position,
If it is determined that sufficient image quality cannot be obtained due to light and shade, the capture condition of the scanner 1 is changed and the input is performed again. Then, the above-mentioned re-input is repeated until sufficient image quality and position are obtained. Sufficient image quality
When the position is obtained, the black and white binary image information is converted into code information in the data compression unit 10 and data compressed. The coded image information is sent to the optical disc control unit 9 together with the title of the image information input from the keyboard 2. In this state, when an instruction for new registration of an image is input from the keyboard 2, the input instruction for new registration is sent from the keyboard control circuit 3 to the optical disc control section 9, and the coded image information is driven by the optical disc. Writing is performed on the optical disk medium set in the device 8. The flowchart of FIG. 2 shows the above-mentioned new image registration processing.

Next, a first embodiment of the registered image correction method according to the present invention will be described with reference to FIG. In FIG. 1, first, title information peculiar to an image added at the time of image registration is input from the keyboard 2, and further a search instruction is input from the keyboard 2. The input search instruction and title information are input from the keyboard control circuit 3 to the optical disc control unit 9. The optical disc control circuit 9 compares the input title information with the title information read from the optical disc set in the optical disc drive device 8, and if they match, searches the storage location of the image information corresponding to the title information. To find image information. Since this image information is coded and compressed, it is decompressed by the data decompression circuit 11 and expanded into black and white binary information, sent to the display control unit 4, stored in the display memory 5, and displayed on the display unit 6. It When the operator determines that the image information is the image information to be corrected, the operator inputs a print output instruction from the keyboard 2. The print output instruction is input to the image output control unit 14 via the keyboard control unit 3, and on the other hand, the image expanded into binary black and white in the data expansion unit 11 is input to the image output control unit 14 and is output from the printer 15. Printed out. Corrections such as corrections and additions are added to the printed output image, and the image information with the corrections and additions added is the scanner 1
Will be entered again. Similar to the registration of the original image, the binarization circuit 7 converts it into black and white binary information, and the display control unit 4
Are stored in the display memory 5, and are displayed on the display unit 6. Position and image quality confirmed by the operator,
If it is determined to be good, it is sent to the data compression circuit 10 and the black and white binary information is coded and compressed. Next, this correction
The title information corresponding to the added image is the keyboard 2
The title information input from the keyboard control circuit 3 is sent from the keyboard control circuit 3 to the optical disc control circuit 9 to be matched with the compressed image information, and then written to the optical disc medium set in the optical disc drive device 8. The flowchart shown in FIG. 3 shows the registered image correction method according to the first embodiment described above.

However, using the method described in the first embodiment above,
When the correction of the registered image is repeated, the image quality of the registered image gradually deteriorates. That is, the original image shown in FIG.
Repeating the re-registration for No. 21, FIG. 4 (b)-
As shown in (e), the image quality deteriorates. This is due to the linear density at the time of capturing an image and the scan cycle, and uneven notches are stochastically generated on the top, bottom, left, and right end surfaces. There are two possible cases for this, as shown in the examples of FIGS. The first case is the fourth
In this case, as shown in FIGS. (A), (b), and (c), the line gradually becomes thicker and the spaces between the quadrangles of the original image 21 are crushed. This is a case that can be considered when the density of the quadrangle is close to black. That is, as shown in FIG. 4 (b), a crushed portion A1 is generated, and when the output image of this A1 is further captured by the scanner 1 and binarized, it becomes like A2 shown in FIG. 4 (c). , Even compared with A1, it can be seen that it is further crushed. The second case is a case where the line gradually disappears as shown in FIGS. 4 (a), (d), and (e). This is a case that can be considered when the density of the quadrangle of the original image 21 is close to white, and it can be seen that the original image 21 disappears as shown by B1 in FIG. 4 (d). Further, when the print output of B1 in FIG. 4 (d) is input again from the scanner 1, as shown by B2 in FIG. 4 (e), more information is missing from B1.

Next, a second embodiment of the registered image correction method of the present invention, which is an improvement of the first embodiment described above, will be described with reference to FIGS. 1 and 5 (a) and (b). The uncorrected image 41 shown in FIG. 5A is printed out as follows. That is,
The title information of the image to be corrected is input from the keyboard 2 of FIG. 1, and the optical disc control circuit 9 searches the optical disc 9 set in the optical disc drive 8 for image information that matches the title information. Next, the data expansion unit 11 expands the retrieved image information into black and white binary information,
After that, the printer 15 prints out. This is the uncorrected image 41 shown in FIG. A corrected portion is added to this image to create a corrected image 42.

Here, when considering the image quality, the part that is not corrected is the state of A1 or B1 in FIGS. 4B and 4D. The modified part is the state of the original drawing. As in the first embodiment of the previous term, when this corrected image is read by the scanner 1 shown in FIG. 1 as it is, the corrected portion is changed from the original drawing of FIG. 4 (a) to FIG. 4 (b), (c). The image quality of A1 or B1 shown in FIG.
The image quality is from A1 or B1 to A2 or B2 shown in (d) and (e). Therefore, in the second embodiment, only the corrected portion is used and embedded in the image before the correction, so that the image quality is always A1 shown in FIGS. 4 (b) and 4 (c).
Alternatively, it is possible to maintain the level at B1 and it is possible to maintain good image quality.

The method of synthesizing images will be described in more detail. The uncorrected image 41 shown in FIG.
Is read from the optical disk medium set in, and the data decompression circuit 11 converts the compressed data into monochrome binary information, which is sent to the positioning circuit 12 on the one hand and to the printer 15 via the image output controller 14 on the other hand. Is output. The image printed out from the printer 15 is corrected to obtain a corrected image. This corrected image is taken in by the scanner 1 shown in FIG. 1 and converted into black and white binary information by the binarizing circuit 7, and is output to the positioning circuit 12 on the one hand. On the other hand, the image information converted into the binary information is stored in the display memory 5 via the display control circuit 4,
It is displayed on the display unit 6. Next, as shown in FIG. 5B, the correction information 44 is surrounded by the mouse 16 in the displayed image. This information is recognized by the keyboard control unit 3. The corrected portion and the peripheral area 45 having a constant width are cut out by the display control unit 4. The correction information 44 and its peripheral area 45 are given to the uncorrected image 42 already sent to the positioning circuit 12 as shown in FIG. 2 (a). This is given by the distance in the X and Y directions from the reference position of the image. Here, the pre-correction image 41 and the post-correction image 42 should all be the same except for the corrected part. However, focusing on the peripheral area of the corrected part, the corrected image is moved in the X and Y directions to Find the best match for the region. Incidentally, in FIG. 5 (b), reference numeral 46 indicates pre-correction information.

As a method of finding a matching place, paying attention to the peripheral area, fixing the image before correction and taking the exclusive OR of the information before correction and the information after correction, the exclusive OR is the most The place with the fewest positions is the most aligned position. First, the Y direction is fixed, the corrected information is moved in the X direction, and the X position with the smallest exclusive OR is searched for. Next, this X position is fixed and moved in the Y direction to find the Y position with the smallest exclusive OR. Furthermore,
Rotate the center of the designated area as an axis with X, Y fixed,
It is possible to further improve the matching accuracy by searching for the most matching place. The flowcharts shown in FIGS. 6A and 6B show the registered image correction method according to the above-described second embodiment.

A method will be described with reference to FIG. 7 in which the place where the exclusive OR is the smallest is the place where the matching accuracy is increased. FIG. 7 (a) shows the image before correction, and FIG. 7 (b) shows the image after correction. First, Y of the uncorrected image and the corrected image
The direction is fixed, and the corrected image is moved in the X direction as shown in FIG. 7 (c) or (d). Here, the exclusive OR of FIG. 7 (d) is smaller than that of FIG. 7 (c). The position of FIG. 7 (d) is better than that of FIG. 7 (c). Here, the property that the places where the exclusive ORs overlap is zero is used. The exclusive OR of the images shown in FIG. 7 (c) is as shown in FIG. 7 (e) in terms of area, and the exclusive OR of the images shown in FIG. 7 (d) is
The area is as shown in FIG. 7 (f). It can be seen that if the X direction is not changed from the state of FIG. 7 (d) and the Y direction is moved, the exclusive OR at the position of FIG. 7 (g) is reduced. That is, the output of the exclusive OR is the seventh
As shown in the figure (h), the positioning is completed.

Next, FIGS. 8A and 8B show the relationship between the movement amount in the X direction and the Y direction and the value of the exclusive OR. When the image before correction is fixed and the image after correction is moved, the exclusive OR becomes the minimum at the most coincident place. When the value exceeds the minimum value, the exclusive OR increases. This is the same in the X and Y directions. Further, when the X direction and the Y direction are most coincident with each other, the coincidence accuracy can be further improved by rotating about the center as an axis and minimizing the exclusive OR.

When the positioning is completed, the information in the correction area of the image before correction can be replaced with the information after correction to obtain the latest information (corrected image information). In this way, the information of the original image can be updated to the latest state without deterioration of image quality.

The image thus obtained is sent to the display control unit 4, stored in the display memory 5, displayed on the display unit 6, and confirmed by the operator. If confirmation is obtained,
The image information is compressed by the data compression circuit 10 and sent to the optical disc control unit 9. This compressed image information is written on the optical disc set in the optical disc drive 8 together with the title information.

As a reliable method for positioning, as shown in FIG. 5 (a), there is a method in which a positioning mark 43 or the like is provided outside the frame of the image area, and the positioning mark 43 is used for matching. The matching method has two memories, one before correction and one after correction. First, the image before correction is fixed, the images after correction are overlapped, and the exclusive OR of the overlapped information around the positioning mark 43 is taken. , X
Move in the direction, and the position where the sum is the smallest will be the matching position. Next, the X direction is fixed, and the Y direction is moved to find the place with the smallest sum. As a result, the matching operation can be performed using a portion having a small amount of information, and thus can be performed quickly. After this positioning is completed, the image before correction and the image after correction may be further positioned. In this case, since the positioning by the positioning mark 43 is completed, the positioning of the correction information is completed only by performing the confirmation and the fine adjustment. That is, it is possible to improve the positioning efficiency by performing the rough adjustment with the positioning mark outside the frame of the image area and performing the fine adjustment with the peripheral area of the correction information.

Further, by printing the positioning mark in advance outside the frame of the drawing, the positioning can be facilitated. As shown in FIG. 5 (a), by pre-printing the two positioning marks 43 on the diagonal line, it is possible to roughly adjust the alignment of the image information and to perform the positioning efficiently. Is possible.

Furthermore, in order to improve the matching accuracy, after the rough adjustment is completed, the corrected image is binarized with a plurality of slices,
By adopting the image quality of the slice in which the peripheral information matches most, it becomes possible to combine the corrected portion without feeling discomfort when viewed from the entire pre-correction screen image.

EFFECTS OF THE INVENTION According to the registered image correcting method of the image filing apparatus of the present invention, the registered image can be easily corrected, and the corrected portion is replaced only in the image area of the corrected portion and its peripheral portion. Therefore, the registered image can be corrected without degrading the image quality of the registered image. Therefore, it is not necessary to store the original image, and it is possible to save the space and the labor of managing the original image. Further, the present invention prints out the registered image of the image file device, corrects the printed out image, and updates the registered image of the image file device. This work is necessary for updating the design drawings and the like. Therefore, there is an effect that the consistency with the practice is very good.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of an image filing apparatus for executing the registered image correction method of the image filing apparatus of the present invention,
FIG. 2 is a flow chart showing a new image registration process in the image file device shown in FIG. 1, and FIGS. 3 and 6 (a) and (b) are embodiments of the registered image correction method of the image file device of the present invention. 4 (a), (b), (c), (d), and (e) show the image quality when the registered image correction method of the image filing apparatus shown in FIG. 3 is repeatedly performed. Explanatory diagrams showing changes, FIGS. 5 (a) and 5 (b) are explanatory diagrams showing an example of pattern matching between the uncorrected image and the corrected image, and FIGS. 7 (a), 7 (b),
(C), (d), (e), (f), (g) and (h) are pattern matching in which the exclusive OR of the image information of the image before correction and the image information of the image after correction is obtained. 8A and 8B are examples of the above, and FIG. 8A and FIG. 8B are the sum of exclusive OR of the pre-correction image information and the post-correction image information when the post-correction image is moved in the X and Y directions, respectively. It is a figure which shows an example of a change of a value. 1 ... Scanner, 2 ... Keyboard, 3 ... Keyboard control section, 4 ... Display control section, 5 ... Display memory, 6 ...
Display unit, 7 ... Binarization circuit, 8 ... Optical disc drive device, 9 ... Optical disc control unit, 10 ... Data compression unit, 11
...... Data expansion unit, 12 …… Positioning circuit, 13 …… Image composition unit, 14 …… Image output control unit, 15 …… Printer unit, 16 ・ ・ ・
…mouse.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masaaki Fujinawa Inventor Masaaki Fujinawa 1-280 Higashi Koigokubo, Kokubunji City, Tokyo Central Research Laboratory, Hitachi, Ltd. (72) Hiroo Shimizu 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi, Ltd. In-house (72) Inventor Naoaki Kufushiro 2880 Kozu, Odawara-shi, Kanagawa Hitachi Ltd. Odawara factory (72) Inventor Seiichi Kanama 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Stock company Hitachi, Ltd. (56) Reference JP 62-3375 (JP, A) JP 64-33687 (JP, A) JP 64-81076 (JP, A)

Claims (3)

[Claims] 1. An image area of a corrected portion and its peripheral portion, which prints out an image registered in an image file device, corrects the printed image, stores the corrected image in an electronic file device and stores it. As for the image information of the before-correction image and the after-correction image, pattern matching is performed, and the image information of the before-correction image and the after-correction image are replaced and replaced for the image area of the corrected portion and its peripheral portion. A registered image correction method for an image file device, characterized in that the obtained image information is registered. 2. In the image area of the corrected portion and its peripheral portion, pattern matching between the uncorrected image and the corrected image is performed by exclusive ORing the image information of the uncorrected image and the image information of the corrected image. 2. The registered image correction method for an image file apparatus according to claim 1, wherein it is determined that pattern matching has been achieved at a position where the total value of exclusive ORs is the minimum. 3. The pattern matching between the image before correction and the image after correction with respect to the image area of the corrected portion and the peripheral portion thereof is performed by using a positioning mark printed in advance at a predetermined position on a paper on which an image is printed out. The method for correcting a registered image in an image file device according to claim 1, wherein the method is performed.