JPH0775391B2 - Document angle and magnification setting device for color scanner - Google Patents

Description

The present invention relates to a device for setting a magnification and a rotation angle of an original when making a plate by a color scanner.

[Prior Art] Conventionally, a color scanner is used for color plate making from an original such as a photographic negative. This color scanner puts an original on a drum, rotates this drum and scans it in the axial direction, photoelectrically scans the image of this original, reads it, decomposes it into each color and makes the necessary corrections. Automatically produce halftone positive or halftone negative of each color.

When performing color plate making with such a color scanner, calculate the enlargement or reduction ratio of this document from the outline of the document image specified on the layout specified paper, and enter this magnification when setting this document in the color scanner. Then, a halftone negative having a predetermined magnification is produced by changing the scanning speed and the like. Then, this halftone negative is pasted at the designated position on the designated layout paper. In this case, if the image on the document is skewed or if the document is specified to be placed diagonally on the layout-designating paper, rotate the halftone dot correspondingly and paste it to create a negative for platemaking. To make.

There is also a color scanner conventionally known as a layout scanner, which is capable of electronically enlarging and rotating this image by processing an image signal obtained by photoelectrically scanning an original. . Further, according to this layout scanner, a halftone negative for one page of a printed matter can be produced by exposing a plurality of originals at designated positions, magnifications, and rotation angles according to a designated sheet.

However, in order to process this image signal to enlarge and rotate the image, a large amount of calculation is required, the processing speed is slow and inefficient, and the quality of the image is deteriorated as a result of the processing. For this reason, even when using this layout scanner, the magnification and rotation angle of this document are obtained in advance before the document is attached to the drum of this layout scanner, and the drum is read according to the rotation angle obtained in advance. It is preferable that the sheet is affixed to the layout scanner diagonally and the magnification obtained in advance is input to the layout scanner.

Conventionally, the following method has been used to previously obtain the magnification and rotation angle of the original document. That is, first, an original is placed on the designated sheet for layout, and the rotation angle of the original is obtained using a ruler or the like. In addition, the image of this original is projected by the projector onto the designated paper for layout, and the size of this projected image is changed by changing the distance between the projector and the designated paper for layout and the focal length of the lens. The magnification of this original is calculated from the above distance and the focal length of the lens in this state in correspondence with the contour of the screen specified in.

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

[Problems to be Solved by the Invention] The present invention has been made based on the above circumstances, and sets the magnification and rotation angle of an original accurately and efficiently before attaching the original to the drum of the layout scanner. It is an object of the present invention to provide a device capable of performing the above.

[Means for Solving Problems and Actions Thereof] According to the present invention, the image detecting means detects the image of the designated layout sheet and the image of the original, sends these images to the signal processing means, and displays these images. The image is superimposed and displayed, and at least one of the images on the display means is enlarged, reduced, moved and rotated by the signal processing means so that these images are superimposed on each other, and the image is enlarged or reduced in this case. The signal processing means calculates the magnification and the rotation angle of the original from the ratio and the rotation angle, and the calculation result is recorded on the recording medium by the recording means. In this recording, for example, the above rotation angle is recorded as a rotation reference line that is inclined with respect to the reference line by an angle corresponding to this rotation angle. Then, the recording medium is attached so that its reference line and the reference line of the document are parallel to each other, and the document is mounted on the drum so that the rotation reference line is parallel to the reference line of the drum of the layout scanner. Therefore, this original is mounted on the drum in a state of being rotated by a predetermined rotation angle. In addition, the magnification recorded on this recording medium is input to the layout scanner.

According to such a device, the image of the designated layout paper and the image of the original document can be arbitrarily enlarged, reduced, moved and rotated on the display means, so that the layout work is extremely easy, accurate and efficient. Especially when using only a part of the 35mm film as a manuscript, or when the outline of the layout-designated paper is small, these can be arbitrarily enlarged as needed, and the work is easy and requires skill. Without it, it is possible to work accurately and efficiently.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. In the figure, 2 is a television camera for photographing originals, 22 is a camera interface, and 4 is a flat scanner for designated paper for layout, and these constitute image detecting means.

Also, in the figure, 20 is a central signal processing circuit, and 38 is for its monitor.
The CRT, 24 is an operating unit, which constitutes a signal processing means.

Further, 30 is a display CRT as a display means.

Further, in the figure, 34 is a printer, 32 is a floppy disk, 36
Is a drawing machine, which constitutes a recording means.

The television camera 2 is a monochrome or color television camera, for example, an original document held in the holder 12.
The 14 images are taken at a fixed magnification, and the image signal is binarized by the camera interface 22 and sent to the central signal processing circuit 20. In addition, the above-mentioned flat sheet scanner 4 is provided with the layout designation paper 6 placed on this.
Is scanned in a plane, and the image is binarized and sent to the central signal processing circuit 20. It should be noted that the layout designation paper 6 has a contour 8 indicating the size and shape of each screen,
10 are drawn, and among these, sketches 18, 18, 36 of the picture on the screen are drawn.

Then, the images of the original document and the designated layout paper detected by the television camera 2 and the plane scanner 4 are sent to the central signal processing circuit 20. This central signal processing circuit displays these images on its CRT38 and the operator
While watching the RT38 screen, adjust the threshold level when binarizing these images so that the contours of these images become clear. Then, in the central signal processing circuit, the image signals thus processed are temporarily stored in the internal storage circuit, and then these images are displayed in an overlapping manner on the monitor CRT 30 as shown in FIG. When this is displayed, the image of the original 16 'and the images of the designated layout papers 8, 10, 16, 18
When and are overlapped, the image of the designated allocation sheet 6 is set to be displayed with priority. Then, in the central signal processing circuit 20, the image displayed on the CRT 30, for example, the image 16 'of the original document is enlarged, reduced, translated, and rotated in accordance with a command signal from the operation device 24. It is configured. This operating device 24 has 2
Individual joysticks 26, 28 are provided, and the joystick 26 is configured to move an image vertically and horizontally, and the joystick 28 is configured to enlarge, reduce, and rotate the image horizontally. In this way, the image 16 'of the original document on the CRT 30 is completely overlapped with the outline 8 of the screen of the designated sheet of paper and the sketch 16 of the pattern drawn therein. Then, the central signal processing circuit 20 calculates and calculates the magnification and the rotation angle at the time of finishing the original 14 from the enlargement / reduction ratio, the rotation angle, and the like in the state where the images are superposed in this way.

This calculation is performed, for example, at the point A origin (0,0) at the lower left corner of the screen.
If the horizontal direction is the x coordinate, the vertical direction is the y coordinate, and the enlargement ratio is M, then an arbitrary point (x, y) of the image of the document is The image can be scaled up or down by converting with the formula. Similarly, if the T _x, it is moved by the y-direction of the T _y in the x direction, Move according to the formula. Furthermore, when rotating this image clockwise by an angle θ, Can be rotated by the formula. Then, the central signal processing circuit 20 calculates the magnification and the rotation angle at the time of finishing the document from the above formula. Then, the calculation result is temporarily stored in the storage circuit in the central signal processing circuit 20.

Then, the above calculation result is recorded by the recording means such as the floppy disk 32, the printer 34, and the plotter 52 such as an XY plotter.

The drawing machine 52 is mainly used when the original is a 35 mm film or the like, and a plurality of originals 14 are held on the holder 12. As shown in FIG. 2, the holder 12 has a strip-shaped flat plate 60 made of synthetic resin or the like.
A plurality of windows 62 are formed in the. And these windows
The manuscript 14 such as a 35 mm film is arranged in a portion corresponding to 62, and the labels 68 are respectively arranged corresponding to these, and the manuscript 14 and the label 68 are adhered to each other in a predetermined positional relationship. Positioning pins 64 are projected on the surface of the strip-shaped flat plate 60, the perforations 66 of the original 14 are fitted to these positioning pins 64, and the positioning holes 70 and 72 of the label 68 are fitted. And place them in place. Further, the holder 60 is formed with positioning holes 74 and 76 for positioning when the holder 60 is mounted on the drawing machine 52. Then, the holder 60 holding these plural originals is attached to the drawing machine 52, and the drawing machine 52 receives the label from the central signal processing circuit 20 on the label on the holder 60.
Data such as a document number, a magnification, and a rotation angle are recorded on the character 68 by characters, and a rotation reference line 92 that is inclined by an angle corresponding to the rotation angle with respect to the reference line 90 is drawn.

Further, the printer 48 records the data such as the number, magnification, and rotation angle of this document on the data display section 82 of the recording paper 80 by characters, and the label section 84 of the recording paper 80 stores these data. Along with the above data, a rotation reference line 92 which is inclined with respect to the reference line 90 by an angle corresponding to the rotation angle θ is printed. The label portion 84 is constructed so that it can be separated from the recording paper 80 by perforations 86.

Then, for example, when the original is large, the label portion 84 is separated from the recording paper 80 ejected from the printer 48, and the reference line 90 of the label portion 84 is arranged so as to be parallel to the reference direction of the original, Stick these together. Note that the original 14 is
When the label 68 on the holder 12 is directly recorded by the plotter 52 using the plotter 52, the original 14
And label 68 together.

Then, when the original 14 is mounted on the drum of the layout scanner, the original document is set to a predetermined size by mounting the rotation reference line 92 displayed on the label 68 in parallel with the reference line of the drum. It is mounted on this drum by inclining it by the rotation angle. In addition, the magnification recorded on the label 68 is read and the numerical value is input to the layout scanner.

The present invention is not limited to the above embodiment. For example, the recording means is not necessarily limited to that of the embodiment. Further, the image detecting means may be configured to photograph both the original document and the designated layout sheet with the television camera.

[Effects of the Invention] As described above, according to the present invention, images of both the original and the layout-designated paper are superimposed and displayed on the display means such as a CRT, and one or both of them are arbitrarily enlarged, reduced, moved, or rotated. Therefore, the operation is easy, and the work can be performed accurately and efficiently without requiring skill. In particular,
Often, a 35mm film is used as the original, and if a part of this film is used or the outline of the layout-designated paper is small, these can be enlarged as needed. , Even an unskilled person can perform work very efficiently and accurately.
The effect is great.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a diagram showing the configuration of the entire apparatus, FIG. 2 is a diagram showing an example of a display on a CRT and a configuration of an operating device, and FIG. 3 is a configuration of a holder. Plan view showing the fourth
The figure is a diagram showing an example of a record display output by a printer. 2 ... TV camera, 4 ... Plane scanner, 6 ... Layout designation paper, 14 ... Original, 20 ... Central signal processing circuit, 24 ...
… Operator, 30 …… CRT, 34 …… Printer, 36 …… Plotter

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP 62-189472 (JP, A) JP 60-112039 (JP, A) JP 58-184945 (JP, A)

Claims (3)

[Claims] 1. An image detecting means for detecting an image of a designated layout sheet and an original, and a signal from the image detecting means,
The images of the layout-designating paper and the original are displayed in an overlapping manner on the display means, and at least one of the layout-designating paper image and the original image on the display means is enlarged, reduced, moved, and rotated, and these images are displayed. And a signal processing means for calculating a magnification and a rotation angle with respect to the finish of the original from an enlargement / reduction ratio and a rotation angle in the case of overlapping, and a recording means for recording the calculated magnification and rotation angle. Document angle and magnification setting device for color scanner. 2. The recording means records the rotation angle on a recording medium as a rotation reference line inclined with respect to a reference line by an angle corresponding to the rotation angle. An original angle and magnification setting device for a color scanner according to claim 1. 3. The image detecting means comprises a television camera for picking up an image of the original document and a flat scanner for binarizing and detecting the image of the designated layout sheet. The document angle and magnification setting device for a color scanner according to claim 1.