JPH08163353A - Method and device for setting data generation - Google Patents

Abstract

PURPOSE: To provide the method and device for setting data generation which generate; setting data consisting of the angle of rotation, the extent of displacement, and the magnification of an original to a block copy independently of the classification of the original. CONSTITUTION: A block copy picture and an original picture are read in by CCD cameras 14 and 18 and are synthesized and are displayed on a display device 38. The work which corrects the extent of deviation to display the pictures is repeated, and the extent of correction for the state of no deviation is outputted as setting data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a setting data creating method and apparatus for setting an original at a predetermined magnification and a predetermined angle with respect to a predetermined portion of a block.

[0002]

2. Description of the Related Art In the field of printing plate making, a plate-collecting operation is carried out in which an image original having a predetermined magnification and a predetermined angle is attached to a predetermined portion under a plate. Then, printing is performed by using the printing plate created from this plate-making block.

By the way, in order to arrange the image original at a predetermined portion of the block, it is necessary to make it by precisely adjusting the magnification and angle.

Conventionally, as a device for producing an original having a desired trimming range, magnification, and angle, a projection device is used to project an image of a transparent original onto a master plate to set the trimming range and the like. There is a device (Japanese Patent Laid-Open No. 64-49046).

In addition, the original is read by using a CCD camera, and the characteristic points on the obtained image are extracted by a pointing device, while the corresponding characteristic points on the block are specified by a digitizer to match these data. There is a device that calculates a trimming range, a magnification, and an angle (Japanese Patent Publication No. 6-5869).

[0006]

However, the former device has a problem that it can be applied only to transparent originals and cannot be set in the case of reflective originals. Also,
In the case of the latter device, there is a drawback that accurate setting is impossible for an image in which it is difficult to set feature points.

The present invention solves the above-mentioned inconvenience, and a setting data creating method capable of creating setting data consisting of a rotation angle of a document with respect to a block, a displacement amount, and a magnification regardless of the type of the document. And to provide a device.

[0008]

In order to solve the above-mentioned problems, the present invention provides a setting data creating method for setting an original at a predetermined magnification and a predetermined angle with respect to a predetermined portion of a block. A first step of reading the images of the block copy and the original, a second step of combining and displaying the block copy image and the original image read in the first step, and a combined image displayed in the second step In the third step, from the third step of processing the original image to correct the deviation of the original image with respect to a predetermined portion of the block copy image, and the fourth step of outputting the processing amount in the third step as setting data. It is characterized by

Further, according to the present invention, in a setting data creating apparatus for setting an original at a predetermined magnification and a predetermined angle with respect to a predetermined portion of the master copy, an image reading for reading the image of the master copy and the original is performed. Means, a rotating means for rotating the image of the original, a displacing means for displacing the image of the original, a magnification changing means for changing the magnification of the image of the original, and a master image read by the image reading means. And a combining means for combining the original images, a display means for displaying the combined image combined by the combining means, a rotation angle, a displacement amount and a magnification set by the rotating means, the displacing means and the magnification changing means. Holding means for holding the setting data of the original document.

[0010]

Operation: The images of the original and the block copy are read, combined, and displayed, and the angle, position, and magnification are adjusted so that the displayed combined image has the desired relationship, and the above-described operation is performed when the desired relationship is achieved. The angle, position, and magnification are the setting data.
In this case, the operator can judge whether the angle, position, and magnification of the original document have a desired relationship with the block copy on the display screen from the composite screen. If you write a rough sketch in advance on the position of the original on the block or paste a copy that matches the desired magnification, you can easily adjust it by checking the overlap on the composite screen. , More efficient setting is possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a setting data creating device 10 of this embodiment. This setting data creation device 10
Is a CCD camera 14 for reading an image of the block copy 12 (hereinafter, referred to as “block copy image”), and an image of a document 16 set at a predetermined portion of the block copy 12 (hereinafter, referred to as “copy document image”). It basically comprises a CCD camera 18 and a setting data creating section 20 which creates setting data based on the block image and the original image. The CCD camera 18 is used for the zoom lens 2
2, and is configured to be rotatable in the direction of arrow θ via the turntable 24. The original 16 is arranged at a prescribed position on the XY table 26 which can be displaced in the X and Y directions.

The setting data creating section 20 is a CPU
28 and is controlled by the CCD cameras 14 and 18
An image conversion unit 30 for converting the analog image data obtained in step 1 into digital image data, and a turntable 24.
And a zoom lens control unit 34 for controlling the zoom lens 22.
A table control unit 36 for controlling the XY table 26, a display 38, and image memories MEM1 to MEM.
EM4 and a setting data memory 42 for storing setting data including a rotation angle, a displacement amount and a magnification.
With.

Setting data creating apparatus 1 of the present embodiment
0 is basically configured as described above,
Next, a setting data creating method using the setting data creating apparatus 10 will be described with reference to the flowchart shown in FIG.

First, the block copy 12 on which the sticking position of the original 16 is set is set to a predetermined image pickup position of the CCD camera 14, and the XY table 26 on which the original 16 is arranged at a prescribed position is set on the CCD camera 18. Imaging origin position (X =
0, Y = 0). In addition, the CCD camera 18
The rotation angle θ of the turntable 24 provided in the zoom lens 22 is set to 0 °, and the magnification M by the zoom lens 22 is set to 1
It is set to 00% (step S10).

After the above initial setting is completed, the CCD camera 18 is driven and the image of the original 16 is read. The read original image data I (original 1) is transferred to the image conversion unit 3
After the analog image data is converted into digital image data at 0, the image data is stored in the image memory MEM1 (step S11, see FIG. 3A). Then CCD camera 1
4 is driven and the image of the block copy 12 is read. The read block image data I (version 1) is converted from analog image data to digital image data in the image conversion unit 30 and then stored in the image memory MEM2 (step S12, see FIG. 3B).

Next, the original image data I (original 1) stored in the image memory MEM1 is copied to the image memory MEM3 (step S13). Then, this data is referred to as original image data I (original 2) (see FIG. 3C).

The CPU 28 controls the original image data I (original 2) stored in the image memory MEM3 and the image memory MEM.
The block copy image data I (version 1) stored in 2 is combined according to the following expression (1) to create combined image data I (combination) (step S14). The coefficients A and B are arbitrary and can be set to 0.5, for example.

I (total) = A · I (original 2) + B · I (version 1) (1) The composite image data I (total) is stored in the image memory MEM4 and displayed on the display 38. (Step S15, see FIG. 3D). Therefore, the operator, in the composite image displayed as shown in FIG. 3D,
It is confirmed whether or not the original 16 is set at a desired position on the block 12 with a desired magnification and a desired angle (step S16).

In this case, the operator first sets the original 16
If it is determined that it is necessary to enlarge or reduce the magnification (step S17), the magnification is set (step S18), the zoom lens 22 is driven through the zoom lens control unit 34, and the magnification is increased. Change M.
The magnification M is changed not only by the zoom lens 22 but also by the zoom lens 22.
It can also be done by data processing. In this case, the set magnification M is determined by the product of the optical magnification by the zoom lens 22 and the electrical magnification by data processing.

The operator is also required to make a block copy 12 of the original document 16.
When it is determined that the setting position needs to be changed (step S19), the displacement amount is set (step S20), and the table control unit 3
The XY table 26 is driven via 6 to change the displacement amounts X and Y.

Further, the operator is required to make a copy 1 of the original 16.
When the rotation position with respect to 2 is confirmed and it is determined that the rotation position needs to be changed (step S21), the rotation angle is set (step S22), and the turntable 24 is driven via the turntable control unit 32. Then, the rotation angle θ is changed.

After performing the change work as described above, C
The image of the original 16 is read again by using the CD camera 18, and the steps S10 to S22 are repeated.
In addition, when the electric magnification change is included, step S1
3, the original image data I (original 2) that has been subjected to the scaling processing
Will be stored in the image memory MEM3.

When the combined image displayed on the display 38 becomes a desired image, the operator turns the setting data including the rotation angle θ, the displacement amounts X and Y and the magnification M of the original document 16 at that time. Take in as command values by the table control unit 32, the zoom lens control unit 34, and the table control unit 36,
It is stored in the setting data memory 42 (step S23).

In the above description, the rotation angle of the original 16 and the like are changed using the turntable 24, the zoom lens 22 and the XY table 26.
It can also be performed as data processing by 8. In that case, steps S18 and S2 are performed based on the operator's instruction.
When the magnification M, the displacement amounts X and Y, and the rotation angle θ are set in 0 and S22, the CPU 28 sets the unprocessed original image data I (original 1) stored in the image memory MEM1 according to the set values. Each processing of scaling, movement and rotation is performed, and the data is stored in the image memory MEM3 as the original image data I (original 2) (step S24). Less than,
By repeating the processing of steps S14 to S23,
The setting data can be obtained.

The setting data created as described above is supplied to a scanner (not shown), and a desired original image can be obtained by reading an image from an original set according to the setting data.

[0026]

According to the setting data creating method and apparatus of the present invention, the rotation angle of the original with respect to the master copy is irrespective of whether the original having an image to be set in the master copy is a transparent original or a reflective original. The displacement amount and the magnification can be set easily and surely.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a setting data creation device of the present embodiment.

FIG. 2 is a flowchart of a setting data creating method according to this embodiment.

3A is an explanatory view of original image data stored in an image memory, FIG. 3B is an explanatory view of block image data, FIG. 3C is an explanatory view of original image data after processing, and FIG. ,
It is an explanatory view of synthetic image data.

[Explanation of symbols]

10 ... Setting data creating device 12 ... Workpiece 14,18 ... CCD camera 20 ... Setting data creating unit 22 ... Zoom lens 24 ... Turntable 26 ... XY table 38 ... Display 42 ... Setting data memory MEM1 to M
EM4 ... Image memory

Claims (2)

[Claims] 1. A setting data creating method for setting an original at a predetermined magnification and a predetermined angle with respect to a predetermined portion of a block, a first step of reading images of the block and the original, A second step of combining and displaying the block copy image and the original image read in the first step; and correcting a shift of the original image with respect to a predetermined portion of the block copy image in the combined image displayed in the second step. A setting data creating method comprising: a third step of processing the original image to be processed; and a fourth step of outputting the processing amount in the third step as setting data. 2. A setting data creating apparatus for setting a document at a predetermined magnification and a predetermined angle with respect to a predetermined portion of a master copy, comprising image reading means for reading images of the master copy and the original document, Rotating means for rotating the image of the original, displacing means for displacing the image of the original, magnification changing means for changing the magnification of the image of the original, and a block copy image and the original image read by the image reading means. A combining unit for combining, a display unit for displaying a combined image combined by the combining unit, a rotation angle, a displacement amount, and a magnification set by the rotating unit, the displacing unit, and the magnification changing unit, and the document setting. A setting data creation device comprising: a holding unit that holds the data.