JPH0727197B2 - 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 caster puts a manuscript on a drum, rotates this drum and scans it in the axial direction, photoelectrically scans the image of this manuscript, reads it, separates it into each color and makes the necessary corrections. The net positive or half negative of each color is automatically prepared.

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, it is possible to produce a halftone negative in which a plurality of originals are exposed at designated positions, magnifications and rotation angles in accordance with a designated sheet of paper by arranging a copy negative for one page of a printed matter.

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] The present invention relates to a mounting table on which layout-designating paper or an original document is mounted, a camera for capturing an image of the layout-designating paper or document on the mounting table, and The magnification of the lens of the camera is changed by the magnification changing means, and the camera is rotated by the camera rotating means to display the image photographed by the camera on the image display means by changing the magnification and the angle. , The image of the specified allocation sheet stored in the signal processing means is displayed in an overlapping manner, and the image of the specified allocation sheet and the image of the original are made to correspond on this image display means, and the magnification and rotation of the camera at that time are displayed. The magnification and the rotation angle when the original is mounted on the color scanner are obtained from the angle and recorded by the recording means. Therefore, the magnification and the rotation angle can be automatically set when the original is mounted on the color scanner by simply associating the image of the designated layout sheet with the image of the original on the image display means. It is efficient and its accuracy is improved.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 2 in the figure denotes a mounting table on which the designated paper 20
Alternatively, the document 72 is configured to be placed. The mounting surface of the mounting table 2 is made of a transparent material, and when the original is a photographic negative, it can be illuminated from the back side. It should be noted that when the original document and the designated layout sheet are opaque, the illumination light source 14 can illuminate them from the front side. In addition,
The layout designation paper 20 has outlines 22 and 26 of an image to be printed and schematic sketches 26 and 28 of the image. A grid-like reference line is drawn on the mounting table 2, and the mounting table 2 is configured so that it can be freely moved in the horizontal X and Y directions while the above-mentioned layout-designating paper or original document is mounted. Has been done.

Further, a television camera 4 is provided on the placing table 2, and the television camera 4 is configured to take an image of the designated allocation sheet or the original document on the placing table 2.
The television camera 4 is provided with a zoom lens 6, and the magnification of a captured image can be changed by changing the magnification of the zoom lens 6. Then, the zoom lens 6 is remotely operated by the magnification changing means 12, and the magnification changing means 12 outputs a signal corresponding to the magnification of the zoom lens 6. In addition, this TV camera 4 has a camera rotating means 8
Is configured to rotate about an axis perpendicular to the mounting table 2, that is, a vertical axis. The camera rotating means 8 is provided with a motor 10 for rotating the camera and a rotary encoder so as to remotely rotate the television camera 4 by an arbitrary rotation angle and output a signal corresponding to the rotation angle at that time. It is configured.

The image photographed by the television camera 4 is sent to a video display means such as CRT 34 and displayed on the screen. The image signal captured by the television camera 4 is also sent to the signal processing circuit 30. The signal processing circuit 30 binarizes the image signal of the layout-designating paper 20 among the image signals, stores the binarized image signal in the storage circuit 48, and stores the stored image signal in the above-mentioned manner.
It is configured so as to be superimposed on the image of the document displayed on the CRT 34. Reference numeral 46 is a keyboard for inputting command signals and the like to the signal processing circuit 30.

Further, reference numeral 36 in the figure denotes a camera operation device for remotely operating the above-mentioned television camera 40. The camera operation device 36 is provided with a magnification operation switch 38 and a rotation operation switch 40, which are used to change the magnification of the zoom lens 6 of the television camera 4 and rotate the camera. Further, the camera operation device 36 is provided with reset buttons 42, 44, and by operating the reset buttons 42, 44 when binarizing the image of the layout designation paper 20 and storing it in the storage circuit 48. The magnification and the rotation angle of the image of the layout designation paper 20 can be set as the reference magnification and the reference rotation angle. 32 is a display unit,
It is configured to display the magnification and the rotation angle of the television camera 4 described above.

The image of the original image taken by the TV camera 4 is displayed on the CRT 34, and the image of the layout-designating paper 20 stored in the storage circuit 48 is displayed on the CRT 24 via the signal processing circuit 30. It is displayed over the image of the displayed document. Then, the size and the rotation angle of the image of the original are changed by operating the camera operating device 36, and this is made to correspond to the contour 22 and the sketch 26 of the layout-designating paper 20. Then, the magnification and rotation angle of the television camera in this state are sent to the signal processing circuit 30 described above,
The magnification and the rotation angle when this document is mounted on the color scanner are calculated.

Then, the calculated magnification and rotation angle are calculated by the printer.
50, a plotting machine 52 such as an XY plotter, and a recording means such as a floppy disk 54.

The printer 50 described above records the data such as the number, magnification, and rotation angle of the original or the mount on the data display portion 62 of the recording paper 60 by characters, and the label portion 64 of the recording paper 60 displays the data. Along with the above data, a rotation reference line 70 that is inclined by an angle corresponding to the above rotation angle with respect to the reference line 68 is printed.
In addition, the label portion 64 is formed on the recording paper by the perforations 66.
It is designed so that it can be separated from the 60.

The drafting machine 52 is mainly used when the original is a 35 mm film, and the original 72 in this case is a holder.
More than one is held on 80. The holder 80 has a strip-shaped flat plate shape and has a plurality of windows 90 formed therein. Documents 72 such as a 35 mm film are arranged in the portions corresponding to the windows 90, and labels 82 are arranged corresponding to these, and these documents 72 and the label 82 are adhered to each other in a predetermined manner. Positioning pins 86 are projected on the surface of the holder 80. The perforations 84 of the original 72 are fitted to the positioning pins 86, and the positioning holes 92 and 94 of the label 82 are fitted. Then, these are arranged at predetermined positions. Further, the holder 80 is formed with a positioning hole 88 for positioning when the holder 80 is mounted on the drawing machine 52 or the like. And
The holder 80 holding the plurality of originals is the drawing machine 52 described above.
The printer 52 is mounted on the holder in the same manner as the printer 50 by the signal from the signal processing circuit 30.
Data such as the magnification and rotation angle of the original is displayed on the label 80, and the rotation reference line 70 is drawn.

Next, the operation of such a magnification and rotation angle setting device will be described. First, the layout-designating paper 20 is placed on the placing table 2. In this case, the layout-designating paper 20 is placed at a position to serve as a reference according to the reference line of the mounting table 2. Then, the layout designation paper 20 is photographed by the television camera 4, the image is displayed on the CRT 34, and the image signal is sent to the signal processing circuit 30. Then, operate the camera operating device 36
Align the image of the layout-designating paper 20 on the CRT with the reference line of this CRT, press the reset buttons 42 and 44 of the camera operation unit 36, and set the magnification and rotation angle of the image of the layout-designating paper 20 in that state as reference values. That is, the rotation angle is set to 0 ° at a magnification of 1.
Then, the image signal of the layout designation paper 20 is a signal processing circuit.
It is binarized at 30 and stored in the storage circuit 48. In this setting, the mounting table 2 is moved in the horizontal direction, the contours 22 and 24 of each screen drawn on the layout designation paper 20 are positioned at the center of the CRT 34, and the magnification of the TV camera 4 is adjusted. The outline of the lever may be displayed on the full screen of the CRT 34, and the reset buttons 42 and 44 may be pressed in this state to set the reference magnification and the reference angle for each of the outlines 22 and 24. By doing so, when the contour and the image of the original are later associated with each other on the CRT 34, the contour is displayed large in the center of the screen of the CRT 34, which facilitates the work.

Next, the designated allocation paper 20 is removed from the mounting table 2, and the original 72 is mounted on the mounting table 2 instead. Then, the original 72 is photographed by the television camera 4 and its image is displayed on the CRT 34 as shown in FIG. Along with this, an image of the layout-designating paper 20 stored in the storage circuit 48, for example, an outline 22 of the screen and an image of a schematic sketch 26 of the screen drawn therein is displayed in an overlapping manner.

Then, the camera operating unit 36 is operated to change the magnification of the television camera 4 so that the image 26 'of the original and the sketch 26 are made to correspond to each other, and the television camera 4 is rotated to display the image on the screen of the CRT 34. Rotate the original image 26 ',
Match this with the angle in sketch 26. Then, the signal processing circuit 30 calculates the mounting angle and the scaling factor when mounting this document on the color scanner from the scaling factor and the rotation angle of the television camera 4 in this state.

Then, the calculated magnification and rotation angle are recorded by the above-mentioned recording means such as the floppy disk 54, the printer 50 or the drawing machine 52. Then, for example, the label portion 64 is cut off from the recording paper 60 ejected from the printer 50, the reference line 68 of the label portion 64 is arranged so as to be parallel to the reference direction of the original 72, and these are bonded. The manuscript
When 72 is held in the holder 80 and recorded directly on the label 82 on the holder 80 using the plotter 52, the holder 80
Then, the original 72 and the label 82 may be removed together.

When the original 72 is attached to the drum 76 of the color scanner, the rotation reference line 70 displayed on the label portion 64 is attached so as to be parallel to the reference line 74 of the drum. The original document is mounted on the drum 76 while being inclined by a predetermined rotation angle. Further, the magnification recorded on the label portion 64 is read and the numerical value is input to the color scanner.

The present invention is not limited to the above embodiment. For example, the recording means is not necessarily limited to that of the above embodiment, and various means can be adopted as long as the magnification and the rotation angle of the original can be recorded.

[Effect of the Invention] As described above, according to the present invention, regardless of whether the original and the designated layout sheet are transparent or opaque, the image of the original and the image of the designated layout sheet are displayed together on a video display means such as a CRT. The magnification and rotation angle of this document can be set automatically by simply associating the image of the document with the image of the specified layout paper on this screen, so there are few parts that rely on manual work, which improves efficiency and accuracy. Etc., 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 an image displayed on an image display means, and FIG. 3 is an image displayed by a printer. FIG. 4 is a diagram showing an example of recorded display, FIG. 4 is a diagram showing a state in which a document is mounted on a drum of a color scanner, and FIG. 5 is a plan view showing a configuration of a document holder. 2 ... Mounting table, 4 ... TV camera, 8 ... Camera rotating means,
12 ... Magnification changing means, 20 ... Layout designation paper, 30 ... Signal processing circuit, 34 ... CRT, 50 ... Printer, 52 ... Plotter, 57 ... Original

Claims (2)

[Claims] 1. A mounting table on which a designated sheet of paper or an original is placed, a camera for taking an image of the designated sheet of paper or an original on the table, and the magnification of a lens of this camera is changed and the magnification is supported. A magnification changing means for outputting a signal, a camera rotating means for rotating the camera around an axis perpendicular to the mounting table and outputting a signal corresponding to the rotation angle, and displaying an image taken by the camera. Image display means, signal processing means for binarizing and storing the image of the layout designated paper photographed by the camera, and displaying the stored image on the image display means so as to be superimposed on the image of the original document; An angle and magnification setting device for a document for a color scanner, comprising: a recording unit that records information on a magnification and a rotation angle of a camera. 2. The recording means records the rotation angle with a straight line inclined by an angle corresponding to the rotation angle with respect to a reference line, according to claim 1. Document angle and magnification setting device for color scanner.