JPH033209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a layout system in which a computer performs trimming and layout of a pattern according to a layout board.

(Prior Art) In recent years, layout systems in which a computer is used to perform layout work necessary for printing plate making have come into widespread use. In such systems, a rotating drum type scanner is generally used to read image data from a document, and the read image data is temporarily stored in a memory such as a magnetic disk pack in preparation for subsequent processing. It was becoming like that.

By the way, the above-mentioned layout work is performed by trimming only the necessary range of the document surface and specifying the position on the image surface of one page, but conventionally, the above-mentioned memory is first trimmed. The captured image data is retrieved and displayed, the cursor image representing the trimming range and the image of the document are arbitrarily moved on the display image surface, and the images of the specified document are sequentially fitted into the positions specified on the layout sheet. I was figuring out how to go.

(Problems to be Solved by the Invention) However, with this conventional method, positioning work on the display image plane requires skill and time, and errors in positioning are likely to occur, making accurate layout difficult and The disadvantage is that the system tends to be expensive because it requires a display device with special functions.

Separately, when reading a document with a scanner, measure the dimensions of the part of the document to be trimmed in advance, taking into account the scanner's magnification ratio, and use this dimensional data and the position to be trimmed on the scanner using a keyboard, etc. A method is also known in which the image data is read after specifying the image data. However, this method has the disadvantage that it requires a great deal of skill and time to measure dimensions and specify positions.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a trimming layout method that does not require an expensive layout display and can easily perform accurate layout in a short time. With the goal.

(Means for Solving the Problems) To achieve this purpose, the present invention provides an image data input means for reading image data from a document, and a position data of an arbitrary point on the document attached to the image data input means. In the layout system, the layout system includes a document position data input means for inputting data on the document from the document position data input means, and a layout data input means for generating position data of a predetermined point on the layout board surface and scaling factor data of the pattern. After inputting the positional data of a specific point of the image, and inputting the positional data, layout position data, and scaling factor data of the point corresponding to the specific point of the image on the layout mount surface using the layout data input means, this input is performed. A reading range wider than the trimming range of the document is calculated based on the position data of the specified point, the position data of the point corresponding to the specified point, the layout data, and the scaling factor data, and based on the calculated reading range, the image is The image data of the original is read by the data input means, and the trimming range is changed or corrected on the display for the read image data, and then the image data of the original is laid out according to the instructions of the layout position data. This invention provides a trimming layout method for printing plate making.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a configuration diagram showing an example of an apparatus for implementing the present invention. 1 is a reading scanning drum (hereinafter simply referred to as drum) of a scanner for reading image data;
2 is a document such as a photographic film, 3 is a magnifying glass, 4 is a rotary encoder (rotary position detector), 5 is a linear encoder (linear position detector), 6 is a control device, 7 is a switch, and 8 is a data doublet. ,
9 is a layout board, 10 is a cursor, 11 is an external memory, 12 is a keyboard, and 13 is a menu area.

The drum 1 holds an original 2 on its cylindrical surface and rotates at a predetermined speed to cause a reading/scanning head (not shown) to scan the original 2 and read image data.

The magnifying glass 3 consists of a low-magnification microscope or the like, and is held so as to be freely movable parallel to the rotation axis of the drum 1 and near the surface of the drum 1 by a guide device (not shown). It is provided so that the original 2 attached and held can be observed in an enlarged manner.

The rotary encoder 4 controls the rotation direction of the drum 1;
In other words, it functions to detect a position along the circumferential direction and generate position data P _Y corresponding to the position.

The linear encoder 5 functions to detect the position of the magnifying glass 3 and generate position data _PX representing the position parallel to the axial direction of the drum 1.

The control device 6 includes a computer and the like, and controls the entire system and processes various data.

The switch 7 transfers the position data P _X and P _Y to the control device 6.
It functions to generate a store signal S _T to be loaded into the memory.

The data tablet 8 is also called a tablet digitizer, and functions to specify a point on its surface with a cursor 10 and generate position data P _X and P _Y representing the position of that point in rectangular coordinates. Furthermore, it functions to input numerical data from a menu area 13 prepared on its surface, and to input magnification data of the image.

Note that necessary numerical data including this magnification ratio data may be input using the keyboard 12 or the like.

The external memory 11 has a large capacity such as a magnetic disk pack, and is capable of storing at least one page of image data.

Next, the operation of the apparatus shown in FIG. 1 will be explained based on the flowchart shown in FIG.

First, as shown in Figure 2, the data tablet 8
The layout mount 9 is set at a predetermined position. On this layout board 9, ruled lines K specifying the trimming range of the document to be laid out and simple figures F indicating outlines of the pictures included therein are drawn.

Then, the cursor is moved and the position data of the ruled line K and the position data of the specific point are input to the control device 6 (S1). That is, if the trimming range is a rectangle as shown by the ruled line K in the figure, mark the cursor 10 on point P ₁ at the upper left corner and point P ₂ at the lower right corner of this rectangle. The position data of these points P ₁ and P ₂ (P ₁ : x ₁ , y ₁ ),
(P ₂ :x ₂ , y ₂ ) is input to the control device 6, and position data (X _a , y _a ) of the specific point P _a of the figure F is input. Note that it is necessary to select a point as this specific point P _a at which the same part in the pattern of document 2 can be easily identified. Therefore, for example, if the pattern is a person's face, Just select the inner corner of the eye.

Next, the numerical data input area of the menu area 13 is designated with the cursor 10, and the magnification data of the image is thereby input (S2). Note that input may also be made from the keyboard 12.

In this way, the position data of three points P ₁ , P ₂ , P _a for each ruled line on the layout mount 9 are obtained x ₁ , x ₂ , x _a , y ₁ , y ₂ ,
After importing the y _a and magnification data (S3), next, as shown in Fig. 3, move the drum 1 and the magnifying glass 3 while looking through the magnifying glass 3.
Point corresponding to specific point P _a of figure F on layout mount 9
P _a ', that is, in this case, the inner corner of the person's eye is found in the image of the original document 2, and it is positioned at the center of the field of view of the magnifying glass 3. At this time, use a magnifying glass 3 in which, for example, a cross-shaped marker M appears at the center of its field of view, and align a specific point P _a ', such as the inner corner of the person's eye, with this marker M, as shown in Figure 4. All you have to do is move the drum 1 and magnifying glass 3 and then stop them.

In this way, when the specific point P _a ' of the document 2 is aligned with the center of the field of view of the magnifying glass 3, the switch 7 is operated to supply the store signal _ST to the control device 6.
The data P _y from the rotary encoder 4 and the data P _x from the linear encoder 5 are taken into the control device 6, and from this, the control device 6 takes in the data (X _a , Y _a ) representing the position of the specific point P _a ′. (S4)

Next, the control device 6 receives these position data x ₁ ,
Calculations are performed based on x ₂ , x _a , X _a , y ₁ , y ₂ , y _a , and Y _a to find the point P necessary to determine the trimming range K' of document 2, as shown in Figure 3. ₁ ′ and P ₂ ′ are calculated. Here, it goes without saying that the trimming range K' should be specified by the ruled lines K of the layout board 9 shown in FIG.

Now, point P ₁ ′, position data (X ₁ , Y ₁ ), point
Assuming that P ₂ '(X ₂ , Y ₂ ) and the magnification ratio when reading image data from the drum 1 are α, the relationship between these data is as follows.

x ₂ −x ₁ = α (X ₂ − X ₁ ) ... y ₂ − y ₁ = α (Y ₂ − Y ₁ ) ... x _{a − x 1} = α (X _{a −} −x _a = α(X ₂ −X _a ) ... y _a −y ₁ = α(Y _a −Y ₁ ) ... y ₂ −y _a = α(Y ₂ −Y _a ) ... Therefore, Positional data X ₁ , Y ₁ , X ₂ , Y 2 representing points P ₁ ′ and P _{2 ′} necessary for specifying the trimming range K′ can be easily obtained from the relationship of these equations.

Here, there is no problem if the positional data of points P ₁ ′ and P ₂ ′ that specify the trimming range K′ of the original 2 is accurate, but normally when inputting the positional data of the specific point P _a ′ on the original 2, Errors are likely to occur within the above trimming range.
K' often deviates slightly from the actual trimming range of the document 2. In such a case, it is necessary to change or correct the trimming range of the image data of the document 2 read by the scanner. For this reason, the reading range of the original 2 read by the scanner must be set slightly wider than the above-mentioned trimming range K'.

Now, let the reading range of the original 2 be K'' (rectangular), and let the upper left corner point of the rectangle representing this reading range K'' be P ₁ '', the lower right corner point P ₂ '', and point P Let the position data of ₁ ″ and P ₂ ″ be (P ₁ ″: X ₃ , Y ₃ ) and (P ₂ ″: X ₄ , Y ₄ ).

In this case, the reading _range K'' can be determined by replacing the above equation with x _{2 − x 1} < _α ( _{X 4} − can be obtained (S6).

After completing the calculation of the position data of the points P ₁ ″ and P ₂ ″ representing the reading range K″, the scanner starts reading the image data, and at this time, the control device 6 calculates the position data X ₁ , Y _{1 , _} ).

In addition, at this time, position data representing P ₁ ″, P ₂ ″
Various methods can be considered for reading out image data only from the reading range K'' using X _{3 ,} Y ₃ , X 4 , and Y ₄ . Scanning direction (sub-scanning direction)
The linear encoder 5 detects _the position of the linear encoder ₅ , and the data _P
The image from the scanning head is scanned using a gate that opens only until the data _P exceeds the position data _{X 3 and} reaches the position data _{X 4 ,} and a gate that opens only until the data P Just gate the data.

When image data has been read for all manuscripts (S7), a layout calculation is performed on the read image data based on the data input in step S1 (S8). In this case, each image data is laid out so that points P ₁ and P ₂ shown in FIG. 2 correspond to points P ₁ ' and P ₂ ' shown in FIG. 3.

Next, the laid out image data is displayed on the display, the layout status is checked (S9), and it is determined whether the layout is accurate or not (10).
If it is not accurate, the layout information is changed or corrected (S11), and the layout calculation for each image is performed again based on the changed data (S8). This layout calculation usually involves changing the position of the trimming range K' of the image data read by the scanner, but as mentioned above, the scanner's reading range K' is wider than the trimming range K' of the document, so The trimming range K′ can be easily changed without reading the original.
When the image data is finally laid out accurately, the image data subjected to the trimming layout is stored in the memory 11 (S12), and the trimming layout of the image data is completed.

As described above, in this embodiment, the data tablet 8 is used to input the layout position data of the image on the layout mount 9, the magnification data of that image, and the position coordinate data of a specific point on the corresponding image, and the magnifying glass 3 is used to input the layout position data of the image on the layout mount 9, 2, the reading range of the original 2 will be automatically set, and the nearly trimmed image data will be written directly into the memory 11, allowing the scanner to read the original. It can be read very easily.

Here, if the ruled lines K on the layout board 9 shown in FIG. However, in the case of a complex shape, the calculation of the reading range becomes complicated, and it takes time to input the image, and if the drum rotates at high speed, the calculation may not be completed in time, which may cause problems.

In such a case, as shown in FIGS. 5 and 6, the control device 6 calculates rectangular areas L ₁ and L ₂ circumscribed to the ruled lines K ₁ and K ₂ of the circular or polygonal shapes, and The image may be input from the drum 1 with a rectangular area slightly wider than L ₁ and L ₂ as the reading range. When the image thus input is read out from the memory 11 and laid out in the control device 6, it is trimmed and laid out according to ruled lines such as circles and polygons.

Note that even if it takes some time to calculate the trimming position within the control device 6, no problem occurs because there is no limit to the time for writing to the memory 11.

In addition, although not particularly explained in the above embodiment,
The magnifying glass 3 may be attached to the scanning head moving mechanism of the scanning head, which eliminates the need for a special moving mechanism for the magnifying glass 3, which is advantageous in reducing costs.

Further, it is needless to say that the magnifying glass 3 does not necessarily need to be used, and depending on the size of the original 2, a simple cursor-like mark may be used.

(Effects of the Invention) As described above, in the present invention, the position data of a specific point of an image on a document is input from the document position data input means, and the position data of a specific point of the image on the layout sheet surface is inputted by the layout data input means. After inputting the position data, layout position data, and scaling ratio data of the point corresponding to the point, the original is In order to calculate a reading range wider than the trimming range and read the image data of the original using the image data input means based on the calculated reading range, plotting of specific points on the layout sheet on the data tablet and reading the original are performed. The scanner automatically inputs image data by simply plotting corresponding specific points on the document surface, and there is no need to measure dimensions or specify areas on the document surface taking into account the magnification ratio. Work on the scanner can be done easily and in a short time.

Furthermore, in the present invention, since image data in a wider range than the actual trimming range is input, it is possible to easily correct or change the image trimming range on the display without inputting image data from the scanner again. As a result, accurate image trimming layout can be efficiently performed.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an example of a layout system for implementing the trimming layout method according to the present invention, FIG. 2 is an explanatory diagram showing an example of position data input operation using a data tablet, and FIG. 3 is a similar diagram. FIG. 4 is an explanatory diagram showing an example of an operation for inputting position data of a document on a drum. FIG. 4 is an explanatory diagram showing an example of an operation for specifying a specific point. FIGS.
The figure is an explanatory diagram showing the operation when the shape of the ruled line is other than rectangular, and FIG. 7 is a flowchart showing the operation of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Reading scanning drum, 2... Document, 3... Magnifying glass, 4... Rotary encoder, 5... Linear encoder, 6... Control device, 7... Switch, 8... Data tablet, 9 ...Layout mount,
10...Cursor.

Claims (1)

[Scope of Claims] 1. An image data input means for reading image data from a document, a document position data input means for generating position data of an arbitrary point on the document attached to the image data input means, and a layout sheet surface. In a layout system comprising a layout data input means for generating position data of a predetermined point on the image and magnification data of the image, inputting position data of a specific point of the image on the document from the document position data input means; After inputting the position data, layout position data, and scaling factor data of a point corresponding to the specific point of the image on the layout mount surface by the layout data input means, the input position data of the input specific point, the specific point calculating a reading range wider than the trimming range of the original from the position data, layout data, and scaling factor data of the corresponding points, and reading the image data of the original by the image data input means based on the calculated reading range; Trimming in printing plate making characterized in that after changing or correcting the trimming range on the display for the read image data, the image data of the document is laid out according to the instructions of the layout position data. Layout method. 2. The trimming layout method in printing plate making according to claim 1, wherein the reading range is a rectangular area wider than a rectangle circumscribing the trimming range of the document.