JPH0769601B2 - Magnification angle setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention has a size in which a projected image matched with a layout-designated paper or a layout graphic on a block exceeds the effective range of a digitizer which is an input means of position data. The present invention relates to a magnification angle adjusting device that can handle cases.

<Prior Art> Conventionally, there is known an apparatus for automatically making a plate for color printing from a photographic film or other original document, that is, a color scanner.

When performing plate making with such a color scanner, the tilt angle, magnification, trimming, etc. of the document are calculated in advance, and the document is attached to the drum by tilting it at an angle corresponding to the above tilt angle. It is necessary to input trimming, etc. to this color scanner.

Conventionally, in order to obtain the magnification and rotation angle of such a document in advance, first place the document on a designated sheet of paper for layout, find the rotation angle of this document using a ruler, etc., and project the image of this document. The original is projected on the layout-designated paper by a machine, the projected image and the contour of the screen designated on the layout-designated paper are matched, and the magnification of this document is calculated from the distance and the focal length of the lens in this state.

However, such a conventional method has a problem that it requires much manual work, is inefficient, and has low accuracy.

Therefore, for example, an “original angle and magnification setting device for a color scanner” disclosed in Japanese Patent Laid-Open No. 62-189471 has been proposed. In other words, place the designated layout sheet on the digitized surface, enlarge and reduce the image of the original on the designated layout sheet with a magnification measuring machine, and match the projected image with the designated layout figure on the designated layout sheet. This is a device that automatically calculates and outputs the magnification, angle, trimming, etc. by digitizing the power point with a digitizer.

<Problems to be Solved by the Invention> However, the above-described device has a problem in that it cannot be applied when the size of the designated layout graphic on the layout-designating paper exceeds the effective input range of the digitizer.

According to the present invention, a document is set on the document projection mechanism, projected on the upper surface of the digitizer by the document projection mechanism, and the projected image exceeds the effective range of the digitizer when the projected image and the layout figure on the layout-designated paper match. Even in such a case, it is an object to provide an apparatus capable of calculating and outputting the magnification, angle, trimming, etc. of a document.

<Means for Solving the Problems> The present invention has been made in order to solve the above problems, and a magnification measuring means for projecting an original on a layout designated paper or a block copy and outputting magnification data, and this layout designated paper. Or input means for inputting the position data of the reference line and the projected image of the block, and the data of the original sticking angle and the trimming range based on the magnification data obtained from the magnification measuring means and the position data obtained from the input means. In a magnification angle setting device composed of a calculation control means for calculating and an output means for outputting the result calculated by this calculation control means, it is obtained when the projected image is matched with the layout designated paper or the layout graphic on the block. Magnification data and position data of an arbitrary base point on the projected image, magnification data obtained when the projected image is reduced to a desired size, and the arbitrary base point and desired measurement point Is provided with position data calculating means for calculating position data of a desired measurement point based on the position data on the reduced projection image corresponding to the above.

<Operation> Since the magnification angle calculating device of the present invention is provided with the position data calculating means, even when the layout figure exceeds the effective range of the position data inputting means, the projection image is first assigned to the layout designation paper using the inputting means. Or, input the position data of an arbitrary base point of the projected image in a state of matching with the layout figure of the block copy, and then reduce the projected image to reduce the position data corresponding to each of the arbitrary base point and the desired measurement point to be obtained. By inputting, the position data calculating means automatically calculates the position data of the desired measurement point from the input position data and the magnification data obtained by the magnification measuring means.

<Examples> The present invention will be described in detail with reference to Examples.

The apparatus of the present invention is a magnification measuring machine (10) which is magnification measuring means.
A digitizer (20) as position data input means, a computer (30) as calculation control means and position data calculation means, and a floppy disk (4 as auxiliary storage means.
0), an XY plotter (50) which is an output means, and a display (60).

A magnification measuring machine (10) includes a document holder (11) for holding and fixing a photographic document, a lens (12) for enlarging and reducing the photographic document, and a light source box (13), which form a support ( 14) is attached so that it can move up and down, and below it is a workbench (15) for projecting an enlarged or reduced image of a photographic manuscript with a designated sheet of paper or a block for printing.
Is provided, and an indicator (1
6) equipped. The workbench (15) also serves as a digitizer (20) described later. In addition, this magnification measuring machine (10) is designed to be laid out on the workbench (15) or the layout pattern of the block copy (in the case of the block copy, the layout pattern is drawn even if it is not taken by the camera. The original document holder (11), lens (12), and light source box (13) can be moved up and down to match the projected images. A linear encoder for measurement and an arithmetic processing unit for calculating the magnification based on the data output from the linear encoder are provided.

Note that such a magnification measuring machine is well known.

The digitizer (20) has the workbench (15) and the free cursor (21) described above, and the position designation data and the position data of the projected image of the layout-designated sheet or block placed on the workbench (15). Is for entering. Computers (30)
Is equipped with a keyboard (31), and is a photograph of the baseline of the scanner drum from the reference line and projection image position data input from the digitizer (20) and the magnification data obtained by the magnification measuring machine (10). A function to calculate the pasting angle and trimming range of the original, and when the layout specified paper or the layout pattern on the block exceeds the effective input range of the digitizer (20), the projected image is made to match the layout specified sheet or the layout pattern on the block. The magnification data and the position data of an arbitrary base point on the projected image obtained when the projection image is reduced to a desired size, that is, the layout figure is reduced to a size within the effective range of the digitizer (20). A position data calculation function for calculating position data of a desired measurement point based on magnification data and position data on the reduced projection image corresponding to the arbitrary base point and the desired measurement point, respectively. , And has a display control function and the like for displaying the position data, menus, etc. input to the display (60).

The floppy disk (40) stores and stores the magnification data obtained from the magnification measuring machine (10), the position data input by the digitizer (20), the data calculated by the computer (30) in a predetermined format. belongs to.

The XY plotter (50) draws the baseline and the original sticking frame on the output sheet based on the measured and calculated data, and the display (60) displays the measured data and menus. .

Next, the operation of the device of the present invention will be described.

In order to perform a magnification angle setting operation, an operator first sandwiches a photographic document with a plate having a transparent property such as glass and sets it in a document holder (11) provided below a light source box (13).

At the bottom of the light source box (13) are several lenses (1
2) are combined to form an arbitrary scaled projection image on the workbench (15) located directly below it. Here, the operator preliminarily instructs how to use the photo original in the printed matter in a rough sketch style, and places the designated layout paper or block having the layout graphic on the workbench (15) of the digitizer (20). Then, the light source box (13) etc. is moved up and down by the up / down switch provided on the front, and the work table (15) surface so that the layout image and the layout image on the layout sheet match the projected image. Move up. Then press the button of the free cursor (21) attached to the digitizer (20) in the matched state. Then, the magnification measuring device (10) obtains the distance of the document surface-lens surface-digitizer surface from the built-in linear encoder, calculates the magnification ratio of the document from the ratio of the above distances, and displays the value (for example,% in the display unit (16). Display units.

Next, input the position coordinates of the apex of trimming or two points on the reference line with the free cursor (21) of the digitizer (20) while keeping the state that the projected image and the layout figure on the layout designated paper or the block match. .

If the point to be entered here exceeds the valid input range of the digitizer (20), enter it as follows. First, as shown in Fig. 2, the projection image (80) is aligned with the projection image (80) so that the projected image (80) and the ring portion of the screen, that is, the layout graphic, designated on the layout designation paper (90) match. Rotate the paper. By pressing the button of the free cursor (21) at the time when the projected image (80) and the ring part of the screen on the allocation designated paper (90) match,
A magnification signal corresponding to the magnification of the projected image (80) is sent from the magnification measuring machine to the CPU of the computer (30). This magnification is l.

Next, with the projected image (80) and the outline of the screen on the layout-designating paper matched, two horizontal or vertical points A (ax, a
y) and B (bx, by) are input using the free cursor (21). If it is known that the line connecting points A and B is horizontal or vertical to the layout-designating sheet, keep the bottom of the projected image (80) parallel to the bottom of the digitizer (20), The rotation angle of the document with respect to the bottom can be calculated by the calculation control means.

As described above, the magnification 1 and the angle of the original can be calculated.

Here, it is assumed that one point C (cx, cy) of the trimming frame which is a desired measurement point is out of the effective range of the digitizer (20) as shown in FIG. When it is necessary to input point C as a trimming frame or the like, first, an arbitrary base point D (dx, dy) on the projected image (80) is input using the free cursor (21).

Next, the magnification measuring device (10) is operated to reduce the magnification until the point on the projected image to be input falls within the effective range of the digitizer (20) while keeping the original angle. When the magnification is reduced to a desired magnification, the button of the free cursor (21) is pressed to send a magnification signal corresponding to the magnification of the projected image from the magnification measuring machine (10) to the CPU of the computer (30). This magnification is l '. Here, (80 ') in FIG. 3 shows a reduced projection image, and C'and D'show points on the projection image corresponding to C and D in FIG. 2, respectively.

In FIG. 3, which is a projected image reduced in magnification and reduced, the point D ′ (d′ x, d ′) corresponding to the point D input in FIG.
Enter y) with the free cursor (21). Next, the free cursor (21) is used to input a point C '(c'x, c'y) corresponding to the point C that could not be input because it was outside the valid range of the digitizer.

Magnification l, magnification l'coordinate D at the time when the projected image is reduced,
D'and C'are all transferred to the position data calculating means and the coordinates of point C (cx, cy) are calculated. The arithmetic expression is as follows.

In the same manner as above, it is possible to input other points beyond the effective range of the digitizer.

When the input work with the digitizer (20) is completed, the obtained position data and magnification data are used to calculate the sticking angle and trimming range of the original document in the arithmetic control means, and the data file is stored in the floppy disk (40) in a predetermined format. Is stored as

After the file for output is created, the operator selects the output command according to the menu displayed on the display (60), and the computer (30) transfers the data in the floppy disk (40) to the XY plotter (50). . The XY plotter (50) draws a base line and a document pasting frame on the sheet based on the transferred data, and this completes a series of operations.

<Effect of the Invention> Since the magnification angle calculating device of the present invention is provided with the position data calculating means, the size of the layout specified paper or the layout graphic of the block exceeds the effective input range of the position data input means. It is also effective for practical use because it can be used for any of the above, is efficient without requiring manual work, and improves its accuracy.

[Brief description of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is an external view for explaining the same, and FIGS. 2 and 3 are explanatory views showing how to input position data when the layout figure exceeds the effective range of the input means. Is. (10) …… Magnification measuring device, (20) Digitizer (30) …… Computer (40) …… Floppy disk, (50) …… XY plotter (60) …… Display

Claims (1)

[Claims] 1. A magnification measuring means for projecting an original on a layout-designated sheet or block and outputting magnification data, and an input means for inputting a reference line on the layout-designated sheet or block and position data of a projected image. Calculation control means for calculating the data of the original sticking angle and trimming range based on the magnification data obtained from the magnification measurement means and the position data obtained from the input means, and the result calculated by this calculation control means. In the magnification angle setting device composed of output means,
Magnification data obtained when matching the projected image with the designated layout paper or layout figure on the block, position data of an arbitrary base point on the projected image, and magnification data obtained when the projected image is reduced to the desired size. And a position data calculating means for calculating position data of a desired measurement point based on position data on the reduced projection image corresponding to the arbitrary base point and the desired measurement point, respectively. Output device.