JPH0833648B2 - Image magnification and angle measuring device for layout - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnification and angle measuring device for an image for layout.

[Prior Art] Conventionally, in the field of printing plate making, a layout scanner having an editing function of performing color separation of an original and performing layout at the time of final finishing has been used.

Before using this layout scanner, it is necessary to measure the magnification of the layout image roughly sketched on the layout-designated paper with respect to the original and the angle of the layout image on the layout-designated paper in advance.

Conventionally, the magnification and the angle are measured by, for example, JP-A-60-112.
As described in Japanese Patent No. 039, this is performed using a projection device.

[Problems to be Solved by the Invention] However, the method using the projection device is very difficult to apply to a reflective original, and also difficult to apply to a transparent original having a low transmittance.

It is an object of the present invention to easily measure the magnification of the layout image with respect to the layout document and the angle of the layout image on the designated paper for layout, regardless of whether the original is a reflective original or a transparent original.

[Means for Solving the Problems] The present invention provides a display device for displaying the contour of a document and the contour of an image for layout, and at least one of the contour of the document and the contour of the image for layout displayed on the display device. An arithmetic unit for calculating a display pattern of the contour of the original document and the contour of the layout image on the display device so as to enlarge / reduce and move the display screen, and displaying the calculated display pattern on the display device; An operation unit for driving and controlling the arithmetic unit is provided so that the contour of the document displayed on the display device and the contour of the layout image overlap with each other, and the magnification of the layout image on the designated layout sheet with respect to the document, A magnification and angle measuring device for a layout image for measuring the angle of the layout image on the designated layout paper, wherein the computing device is a contour of the original document and a contour of the layout image. It is configured such that the magnification is output from the amount of enlargement / reduction by the arithmetic device and the angle is output from the amount of rotational movement until the and are overlapped on the display device.

[Operation] The contour of the document and the contour of the layout image are displayed on the display device, and the contour of the document and the contour of the layout image displayed on the display device are based on the computing operation of the computing device driven by the operation unit. Are scaled up / down and moved to overlap each other. That is, the contour of the original document and the contour of the layout image are overlapped as if they were overlapped with each other by the projection device, and the magnification is calculated from the enlargement / reduction amount of the contour by the arithmetic device until the overlap is reached. The angle can be obtained from the rotational movement amount of the contour. Therefore, regardless of whether the original is a reflective original or a transparent original, it is possible to easily measure the magnification of the layout image with respect to the original and the angle of the layout image on the designated paper in the same manner as using a projection device. can do.

[Embodiment] FIG. 1 is a schematic diagram showing a magnification measuring device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the magnification measuring device, and FIG.
FIG. 4 is a schematic diagram showing a magnification measurement algorithm, FIG. 4 is a schematic diagram showing a document, an image for layout and an exploded drum of a layout scanner, and FIG. 5 is a contour of the document and a layout image displayed on a display device. It is a schematic diagram which shows.

In FIG. 4, 1 is a document, 2 is a layout image, 3 is a layout designation paper, and 4 is a disassembly drum of a layout scanner. The layout scanner is used for color separation of originals at the same time.
Equipped with an editing function that even performs the layout of the final finish.

The measuring device 10 measures the magnification of the layout image 2 roughly sketched on the layout specified paper 3 with respect to the original 1 and the angle of the layout image 2 on the layout specified paper 3 before applying the layout scanner. .

The measuring device 10 includes a digitizer 20 and a display device.
It has 30, a computing device 40, and an operation unit 50.

The digitizer 20 has a table 21 and a stylus pen (or cursor) 22 and stores position information (X / Y coordinates) of several points on the contour of each of the document 1 and the layout image 2 placed on the table 21. To detect. As the detection method of the digitizer 20, a known magnetic induction method, electromagnetic induction method, electrostatic induction method, optical method, ultrasonic method, or the like can be widely applied.

The display device 30 uses the information detected by the digitizer 20 to determine the contours (a, b ... e) of the document 1 and the layout image 2.
The contours (A, B ... E) of are displayed.

The arithmetic unit 40 includes an input unit 41, a CPU (central processing unit) 42,
It has a memory unit 43. The input unit 41 is a digitizer 20.
And the operation information of the operation unit 50 are transferred to the CPU 42.
The memory unit 43 is the operation program of the CPU 42, the digitizer 2
The detection information of 0 and the calculation result of the CPU 42 are stored. CPU42
The outline (a, b) of the document 1 displayed on the display device 30
... e) and at least one of the contours (A, B ... E) of the layout image 2 are enlarged / reduced and moved within the display screen, the display pattern of the corresponding contour on the display device 30 is calculated, The corresponding contour is displayed on the display device 30 in the calculated display pattern.

The operation unit 50 includes a keyboard or the like and drives and controls the arithmetic unit 40. That is, the operation unit 50 switches the arithmetic unit 40 to the detection information reading mode for reading the detection information of the digitizer 20, or allocates the image (a, b ... e) of the document 1 displayed on the display unit 30 and the layout. Image 2 outline (A, B
... E) is switched to a calculation mode for calculating the enlargement / reduction amount, the X / Y movement amount, and the rotation movement amount of at least one of the contours so that they overlap each other.

In addition, the above-mentioned operation part is located at a specific position of the digitizer 20.
It may be provided as shown by A and may transfer a specific operation command to the display device 30 and the arithmetic device 40 in response to the stylus pen 22 instructing a specific position.

By the way, when the CPU 42 of the arithmetic unit 40 enlarges / reduces and moves at least one of both contours so that the contour of the document 1 and the contour of the layout image 2 are overlapped by the operation command of the operation unit 50, (a) According to a predetermined algorithm written in the memory unit 43, the area A1 of the original 1 and the area A2 of the layout image 2 are obtained from the detection information of the digitizer 20, and the square root of the ratio of the area A2 to the area A1 is calculated. , N is obtained as the magnification n of the layout image 2 with respect to the original 1, and the contour of the original 1 or the layout image 2 is enlarged / reduced at this magnification, and (b) the rotational movement center of the contour of the original 1 or the layout image 2 Is set to the center of gravity of those contours. According to the above (a) and (b), the operability of enlargement / reduction and movement of overlapping both contours is improved.

The area calculation algorithm by the CPU 42 is as follows, for example. First, the contour of the manuscript 1 (or the layout image 2) is regarded as a polygon as shown in FIG. 3, and the position information of the points P0, P1, P2, ...
Ask for. The CPU 42 treats the above polygon as a set of triangles having the reference point P0 as its apex, and the area of △ P0P1P2 is S012, the area of △ P0P2P3 is S023, and the area of △ P0P3P4 is S034.
...... Ask as. At this time, each triangle ΔP0PiPj (j = i
+1), the area S0ij is positive if the straight line P0Pj is located counterclockwise from the straight line P0Pi around the point P0, and the area S0ij is positive if the straight line P0Pj is located clockwise from the straight line P0Pi around the point P0. The area of all triangles is integrated with a negative value, and the absolute value is set as the area A1 (or A2) of the contour of the original 1 (or the image 2 for layout).

A = | S012 + S023 + S034 + ... | Hereinafter, an operation procedure for measuring the magnification of the layout image 2 with respect to the original 1 and the angle of the layout image 2 on the layout designated paper 3 using the measuring device 10 will be described.

The document 1 is placed on the digitizer 20, position information of several points on the contour of the document 1 is detected, and the detected information is calculated by a computing device.
The outline of the original 1 based on this detection information is displayed on the display device 30 while being transferred to 40.

The layout image 2 of the layout designation paper 3 is placed on the digitizer 20, the position information of some points on the contour of the layout image 2 is detected, and this detection information is transferred to the arithmetic unit 40, and this detection information is also transmitted. The contour of the allocation image 2 based on is displayed on the display device 30.

The arithmetic unit 40 is driven and controlled by the operation unit 50, and the contour of the document 1 and the layout image 2 displayed on the display unit 30 are displayed.
At least one of the contours of the original 1 (only the contour of the original 1 or the contour of the layout image 2 or both the contours of the original 1 and the layout image 2) is enlarged / reduced and moved within the display screen so that both contours It is in a state of overlapping with.

The arithmetic unit 40 calculates the magnification from the amount of enlargement / reduction of the outline by the arithmetic unit 40 until both the contours overlap each other as described above, and also calculates the angle from the rotational movement amount of the outline. Calculation result of the computing device 40 (magnification and angle)
Is displayed on the display device 30 by the operation unit 50.

According to the above-described embodiment, the contour of the document 1 and the contour of the layout image 2 are displayed on the display device 30 based on the detection information of the digitizer 20, and the contour of the document 1 and the layout image displayed on the display device 30. The second contours are enlarged / reduced and moved based on the arithmetic operation of the arithmetic unit 40 which is driven and controlled by the operation unit 50 and overlap each other. That is, the contour of the document 1 and the contour of the layout image 2 are overlapped as if they were overlapped with each other by the projection apparatus, and the magnification is obtained from the enlargement / reduction amount of the contour until this overlap, and the contour is calculated. The angle can be obtained from the rotational movement amount of. Therefore,
Regardless of whether the original document 1 is a reflective original document or a transparent original document, the magnification of the layout image 2 with respect to the original document 1 and the angle of the layout image 2 on the layout-designated paper 3 are determined in the same manner as when a projection device is used. It can be easily measured.

[Effects of the Invention] As described above, according to the present invention, the magnification of the layout image with respect to the original and the angle of the layout image on the designated paper for layout are used regardless of whether the original is a reflective original or a transparent original. Can be easily measured.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a magnification measuring device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the magnification measuring device, FIG. 3 is a schematic diagram showing a magnification measuring algorithm, and FIG. FIG. 5 is a schematic view showing the layout image and the disassembly drum of the layout scanner, and FIG. 5 is a schematic view showing the outline of the document and the layout image displayed on the display device. 10 ... Measuring device, 20 ... Digitizer, 30 ... Display device, 40 ... Computing device, 50 ... Operation part.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-61-269464 (JP, A) JP-A-61-269565 (JP, A) JP-A-62-189472 (JP, A)

Claims (1)

[Claims] 1. A display device for displaying a contour of a document and a contour of a layout image, and at least one of a contour of a document and a contour of a layout image displayed on the display device is enlarged / reduced within the display screen. An arithmetic unit for calculating a display pattern of the contour of the original document and the contour of the layout image on the display unit so as to move, and displaying on the display unit with the calculated display pattern, and an outline of the original document displayed on the display unit. And an operation unit for driving and controlling the arithmetic unit so that the contours of the layout image overlap with each other, and the magnification of the layout image on the layout designated paper with respect to the original and the angle of the layout image on the layout designated paper. An apparatus for measuring the magnification and angle of an image for layout, which measures the image, wherein the contour of the document and the contour of the image for layout are overlapped on the display device. Up to fit, and outputs the magnification from the enlargement / reduction amount by the arithmetic unit, the magnification and the angle measuring device of the allocation for an image to output the angle from the rotational movement amount.