JPH0324824B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention provides a method for positioning an input original image in an image input/output device that outputs the original image on an input drum in a layout at a designated position and magnification onto a recording material on an output drum according to a figure input by a digitizer (graphic input device). Regarding. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for simply and accurately positioning an original image to be input on an input drum and digitizer. The input original image positioning method of the present invention includes outputting a layout of at least one original image on the input drum at a specified position and magnification to a recording material on the output drum according to the figure input by the digitizer, and
In a method for positioning an input original image in an image input/output device capable of inputting and outputting a plurality of original images in one scan, register pin holes are provided at a plurality of locations on a flexible transparent base that can be attached to the input drum and digitizer; A register pin that engages with each of the register pin holes is provided on the input drum and the digitizer, and the transparent base is positioned at each predetermined position by engagement of the register pin and the register pin hole. The present invention is characterized in that the coordinates of the original image on the digitizer can be easily correlated with the coordinates on the input drum. First, the image input/output device to which the present invention is applied is
This will be explained using a diagram. Color original pictures A, B, C, D pasted on the transparent base 11 of the input drum 10
Layout images A', B', C', and D' are printed on, for example, a color paper 31 as a recording material pasted on an output drum 30 according to the information input graphically by the digitizer 20 as a graphic input device. I am trying to output it. Both the input drum 10 and the output drum 30 have a cylindrical drum structure as shown in FIG. 2, and are rotated in one direction (main scanning direction) by the motor 12. The rotational position (main scanning position) is detected by a rotary encoder 13 connected to the output shaft. Further, the color original images A to D pasted on the input drum 10 are transferred to an image reading head 16 which is moved in the x direction (sub-scanning direction) via a pulse motor 14 and a lead screw 15.
The color separation signal PS (three-color separation signal and unsharp signal) is input to a logarithm circuit 40 and converted to a density signal DS, and then converted to a digital signal by an AD converter 41. Ru. Then, the density signal DS converted into a digital signal by the AD converter 41 is sent to the color processing circuit 4.
2, where color correction, sharpness enhancement, gradation conversion processing, etc. are performed, and the color-processed image information is input and stored in buffer memory 43. The information stored in the buffer memory 43 is converted into an analog signal by the DA converter 44 and then input to the modulator 45 in the laser beam printer, and the information is inputted to the modulator 45 in the laser beam printer, and the information is output from the laser beam (three colors of blue, green, and red) from the laser oscillator 46. The color paper 31 pasted on the output drum 30 is exposed through the output head 32 by modulating the colored laser beams (color laser beams or 3 laser beams with different wavelengths for the false color). The output head 32 is moved in the X direction (sub-scanning direction) via a pulse motor 33 and a lead screw 34 connected thereto. On the other hand, a console 50 equipped with a keyboard is provided as a data and command input device, and data etc. inputted from the console 50 are inputted to a computer (minicomputer) 51, and the information processed by this computer 51 is used in an interactive manner. The computer 51 is further connected to a microprocessor 53 of the lower system, and the microprocessor 53 is interconnected with the color processing circuit 42 and buffer memory 43 via a bus line 54. has been done. The computer 51 and microprocessor 53 constitute a computer system, and instructions to the operator etc. are displayed on a graphic display 52 according to a built-in program. Furthermore, x of the reading head 16
The position is detected by the linear encoder 17 engaged with the guide rail 18, and the position information is input to the timing control circuit 55.
6 and the position information is detected by the linear encoder 35 engaged with the timing control circuit 55.
It is now entered into . Therefore, the y-axis positions of the input drum 10 and the output drum 30 and the
The shaft position is detected by the rotary encoder 13 connected to the rotating shaft, and the position information is also input to the timing control circuit 55. The timing control circuit 55 rotates the pulse motor 33 at a constant speed during image input/output through the computer 51 and the microprocessor 53, controls the driving speed of the pulse motor 14, and also controls the AD converter 41,
The operations of the color processing circuit 42 and buffer memory 43 are controlled in terms of timing. The above is the general configuration of an image input/output system to which the input original image positioning method of the present invention is applied.
Next, the coordinate relationship between each device will be explained. First, coordinate transformation on the digitizer 20 will be explained. The digitizer 20 uses the device-specific origin coordinates and
Although it has a −Y axis, the origin can be moved to any point by operation, and the coordinates can also be easily rotated. That is, in Fig. 3, the device-specific origin is O ^D ₀ , the horizontal axis is X ^D , the vertical axis is Y ^D ,
After inputting O ₁ as the new origin and X ₁ as the new point on the X axis to the digitizer 20, the point
If the coordinate values in the device-specific coordinate system for O ₁ and X ₁ are (x ^D ₀ , y ^D ₀ ) and (X ^D ₁ , y ^D ₁ ), any point (x ^D _o , y ^D _o ) is transformed into a point (x _o , y _o ) in the new coordinate system using the following equation. x _o y _o = cos θ sin θ −sin θ cos θ x ^D _o −x ^D ₀ y ^D _o −y ^D ₀ …(1) However, θ is the angle between the device-specific X _D axis and the straight line _{1 1} , and the counterclockwise direction is positive. Therefore, all calculations of the above equation (1) are performed by the computer 51. Next, management of coordinates on the input/output drum will be explained. In the input drum 10 and the output drum 30, the main scanning (rotation) direction is the y-axis and the Y-axis, and the sub-scanning (lateral running) direction is the x-axis and the X-axis. The coordinates of the read head 16 are thus determined in the timing control circuit 55 in the following manner. That is, regarding the y-axis, the rotary encoder 1 connected to the rotation axis of the input drum 10
3 is multiplied by a PLL (Phase-Locked Loop) circuit, a counter is reset at the origin of the y-axis, and the y-coordinate is determined as an absolute address by counting the output pulses of the PLL circuit. Note that the period of the output pulse of the PLL circuit is
For example, on the input drum 10, 50 [μ] or 10
The multiplication constant is set so that it becomes [μ].
Further, on the x-axis, the x-coordinate is managed as an absolute address by counting the position of the reading head 16 and the output pulses of the linear encoder 17 after resetting a counter at the origin of the x-axis. Further, the X coordinate of the output drum 30 is also managed in the same manner as the input drum. And output drum 3
The Y coordinate of 0 is the input drum 10 and the output drum 30.
Since they rotate synchronously, they are managed in the same way as the y-coordinate. Next, a specific method of positioning an input original image according to the present invention will be explained. The coordinate systems of the digitizer 20 and the input drum 10 are made to correspond to each other using, for example, a rectangular transparent base 11 as shown in FIG. That is, the transparent base 11 is made of a flexible rectangular sheet-like transparent material, and two register pin holes 11A, 11 are formed along the upper side of the transparent base 11.
B is provided. The digitizer 20 also has register pin holes 11 in the transparent base 11.
Two register pins 21 that engage with A and 11B,
22, and when the transparent base 11 on which the original pictures A to D are pasted is mounted on the digitizer 20, the pin holes 1A and 11B are engaged with the pins 21 and 22 as shown in FIG. position. Furthermore, the input drum 10 also has a pair of register pins 6 for positioning similar to the digitizer 20.
1A and 61B are provided, and even when the transparent base 11 on which the original pictures A to D are pasted is wound around and mounted on the input drum 10, positioning is performed by engaging the pins with the pin holes 11A and 11B. In this way, the transparent base 11 is attached to the digitizer 20 and the input drum 10 through the pin holes 11A and 11B.
Since positioning is performed by engagement with a pin, the coordinates on the digitizer 20 of the color original pictures A to D pasted on the transparent base 11 and the coordinates on the input drum 10 can be easily correlated. . By the way, in the above-described image input/output device to which the input original image positioning method of the present invention is applied, two types of input regarding figures such as coordinates are prepared.
One is a graphic input that specifies the shape of the output screen,
The other input is a base document input which specifies which figure on the output screen the color original images A to D for reading are to correspond to. The figure input is an operation in which a figure is input from the digitizer 20 and the figure is made to correspond to the screen on the output drum 30, and this operation is similar to the figure input normally performed in a block drafting machine. In addition, inputting a base document is performed using register pin holes 11A, 11B and a pair of register pins 61, as described above.
A and 61B, the main function of which is to associate the position and magnification of each color original image on the transparent base 11 with the above-mentioned input graphic. Next, the graphic input operation will be explained. In this operation, first the coordinates of the digitizer 20 and the output drum 3 are
Make a correspondence with the coordinates of 0. That is, the sixth
In the figure, O ^D ₀ is the origin unique to the digitizer 20, X ^D ₀ and Y ^D ₀ are points on the horizontal and vertical axes unique to the digitizer 20, and O ^D ₁ is the origin unique to the digitizer 20.
The point on the digitizer 20 corresponding to the origin of X ^D ₁
and Y ^D ₁ are points on the digitizer 20 corresponding to the points on the X-axis and Y-axis of the output drum 30. Therefore ^, points O ^{D 1 and X D 1 are set so that straight lines O D} _{0 X D 0 and O D 1 X D 1 are} ^parallel _, ^and _the ^unique _coordinate value _of point O ^D ₁ on the digitizer ²⁰ is x ^D ₀ , y ^D ₀ ), any point (x ^D _o , y ^D _o ) on the digitizer 20 is converted to a point (X _o , Y _o ) in the coordinate system of the output drum 30, and X _o Y _o = (x ^D _o −x ^D ₀ ) −(y ^D _o −y ^D ₀ ) …(2). In this way, the coordinates of the digitizer 20 can be converted to the coordinates of the output drum 30. Therefore, when the output size on the output drum 30 is first specified using the console 50, an output size frame converted at an appropriate ratio is displayed on the graphic display 52. After that, when the figure code (for example, rectangle, circle, etc.) and necessary coordinate points are input as a block figure in the digitizer 20, the above-mentioned coordinate conversion and magnification conversion for display on the graphic display 52 are performed in the computer 51. Calculations and shapes are displayed on a graphic display 5
It is displayed in the specified position and size of 2. and,
Each time the computer 51 inputs a graphic code and a coordinate point, it controls the graphic display 52 so that the frame and the graphics input so far are superimposed and output. Although the rough sketch is input in this way, the graphic display 52 is used for visual confirmation by the operator. In this case, when the figures overlap, it is necessary to perform hidden surface processing on the figures as described below. By doing this, the final version information is created. When the output screen displayed on the graphic display 52 is, for example, superimposed graphics G1 to G3 as shown in FIG. 7A, the console 50
By performing an input operation such as "G1<G2, G2<G3" using , hidden surface processing as shown in FIG. 7B is performed. Next, base document input will be explained with reference to FIGS. 8A and 8B. The input of the base document is also performed via the digitizer 20, but this operation first involves associating the coordinates of the input drum 10 with the transparent base 11 on which the color originals A to D are pasted, and then The correspondence relationship between each color original image and the block design figure input by the above-mentioned figure input operation is checked on the console 5.
Its main function is to take data through 0. Then, the transparent base 11 on which the plurality of color original pictures A to D are pasted is connected to the resistor pins 21 and 2.
2, and fix it on the digitizer 20. Then, from the coordinate system of the transparent base 11 fixed on the digitizer 20, the input drum 1 is
The conversion to the 0 coordinate system is performed in the same manner as the coordinate conversion from the digitizer 20 to the output drum 30 described in the graphic input operation. Next, the previously input block diagram and the original drawings A to D on the transparent base 11 are
Associate the magnification with the coordinates of . That is, in FIGS. 8A and 8B, output figure A' corresponds to original picture A, but in order to make broken line A1 in original picture A correspond to figure A', one point in original picture A and figure A must be connected. If one point within ' is associated with the coordinates and the magnification at which the broken line A1 in the original image A is enlarged or reduced to the figure A' can be specified, the coordinate relationship is uniquely determined. For this purpose,
For example, one point in figure A' and one point in original picture A may be made to correspond to their coordinates by inputting their positions with digitizer 20, and a magnification value may be inputted with console 50. Original pictures B, C, D and output figures
The same applies to B′, C′, and D′. Next, coordinate management between the coordinates of the digitizer 20 and the coordinates of the input drum 10 and output drum 30 will be explained. First, the position, shape, and size of the original image to be laid out and output on the color paper 31 mounted on the output drum 30 are inputted as a block diagram by the digitizer 20, and a coordinate system (block coordinate system) that defines the block diagram is inputted. The above describes how to define shapes and manage each defined shape. In FIG. 9, images of areas 101 and 201 shown by diagonal lines of input original images 100 and 200 attached to the input drum 10 and pasted on the transparent base 11 are shown by diagonal lines on the color paper 31 attached to the output drum 30. Although a case is shown in which the layout is output to the ranges 101A and 201A, in the following explanation, the input original image 100 is output to the range indicated by diagonal lines on the color paper 31 mounted on the output drum 30, that is, the range of the block diagram 101A. This section explains how to output the layout to . In the following description, each coordinate system is defined such that the coordinate origin is at the upper left, the X axis is from left to right, and the Y axis is from top to bottom, as shown in FIGS. 9 to 11. The digitizer 20 specifies the coordinate origin O ^H ₀ of the block diagram 101A shown in FIG. 10 and one point on its X _H or Y _H axis. As a result, the coordinate values of each designated point on the digitizer 20 are input to the computer 51,
The computer 51 calculates the deviation between the coordinates of the digitizer 20 and the coordinates of the specified block diagram. At this time, the coordinate origin of the block diagram on the digitizer 20
When O ^H ₀ and point X ^H _P on the X axis are input, and their coordinate values are input as point O ^H ₀ = X ^D ₀ , Y ^D ₀ point X ^H _P = X ^D ₁ , Y ^D _1, respectively. , the coordinates of the block figure are translated by X ^D ₀ in the X ^D direction and Y ^D ₀ in the Y ^D direction on the coordinate system of the digitizer 20, and further based on this point. The computer 51 recognizes that the rotation is specified by the angle θ shown by . Furthermore, if the coordinate value on the digitizer 20 of an arbitrary point on the block diagram read by the digitizer 20 is (X ^D , Y ^D ), then the coordinate value of this point on the block coordinate (X ^H ₁ , Y ^H ₁ )
is [X ^H ₁ Y ^H ₁ 1] = [X ^D Y ^D 1] 1 0 −X ^D ₀ 0 1 −Y ^D ₀ 0 0 1 cosθ −sinθ 0+sinθ cosθ 00 0 1 …(4) In step 51, the coordinate values of each figure inputted from the digitizer 20 are converted into coordinate values on the master figure using the calculation process of equation (4) above. When each coordinate of the figure 101A indicated by diagonal lines in the block diagram is inputted from the digitizer 20, the computer 51 calculates the figure converted into the coordinate values on the block coordinate by the calculation process of the above equation (4). recognize. In this way, the figure 101A recognized as a figure on the block coordinates is further processed by the computer 5.
1, the figure 101A is circumscribed and the block coordinates are
Define a rectangle 102 parallel to the X ^H - Y ^H axis, and the vertex 10 closest to the origin of the rectangle's block coordinates.
2A is the coordinate origin (point O ^K ₀ ), and the block coordinates X ^H −
Define a coordinate system with axes parallel to the Y ^{and H} axes (X ^K - Y ^K axes), that is, a shape coordinate system, and
01A can be recognized as a figure 101B on the shape coordinate system. This process is related by equation (5) shown below. That is, the origin of the shape coordinate system
The coordinate value of O ^K ₀ (point 102A) on the block coordinates is (X ^H ₂ ,
Y ^H ₂ ), and the coordinate value of an arbitrary point on the block diagram 101A on the block coordinates is (X ^H ₁ , Y ^H ₁ ), then the coordinate value of this point on the shape coordinates (X ^K ₃ , Y ^K ₃ ) is expressed as [K ^K ₃ Y ^K ₃ 1] = [X ^H ₁ Y ^H ₁ 1] 1 0 −X ^H ₂ 0 1 −Y ^K ₂ 0 0 1 (5). Conversely, the block diagram 101A passes through the origin O ^K ₀ of the shape coordinate system, and the figure 101B, which is inscribed in a rectangle parallel to the X ^H - Y ^H axis, is parallel to the specified position 102A on the block coordinate system. It can also be recognized as a moving figure. The conversion from shape coordinates to block coordinates is as follows: [X ^H ₁ Y ^H ₁ 1] = [X ^K ₃ Y ^K ₃ 1] 1 0 X ^H ₂ 0 1 Y ^H ₂ 0 0 1...(6) It is done by twisting. In addition, in the internal processing of the computer 51, the figure 101A input from the digitizer 20 is converted into the figure information of the figure 101B on the shape coordinate system and the transformation parameter X from the shape coordinate system to the block coordinate system through the aforementioned conversion process. ^H ₂ and Y ^H ₂ can manage the block diagram 101A. In this case, by making a one-to-one correspondence between the block coordinates and the position coordinates on the output drum 30 (output drum coordinates), the block figure information held by the computer 51 can be transferred to the color paper 31 mounted on the output drum 30. It can be reproduced on the coordinates. As a result, it is possible to output an image on the color paper 31 in accordance with the layout conditions specified by the block diagram of the digitizer 20. Next, the position, shape, and size of the original image pasted on the transparent base 11 are input from the digitizer 20, the original image is defined on the base coordinate system (coordinate system that defines the original image), and each defined original image is Describe how to manage it. In FIG. 11, the transparent base 11 on which the original image 100 is pasted is attached to the digitizer 20, and the coordinate origin O ^B _i of the coordinate system (base coordinate system) on the transparent base 11 and the base coordinates are x ^B
The coordinate values of the point ^XBq on the digitizer 20 on the axis or ^yB axis are input to _the computer 51, and the conversion parameters θ, −X ^D ₀ , − are used to convert the coordinates of the digitizer 20 into block coordinates in the computer 51. In the same way as determining Y ^D ₀ , the conversion parameters θ', -X ^D ₀ ', -Y ^D ₀ ' from the coordinates of the digitizer 20 to the coordinates (base coordinates) of the transparent base 11 are determined. Then, the position and size of the original image 100 on the transparent base 11 attached to the digitizer 20 are determined by reading the coordinate values on the digitizer 20 of the bending points 103 to 106 on the outer periphery of the original image, and using the computer 51 for the read coordinate values. Using the parameters θ′, −X ^D ₀ ′, and −Y ^D ₀ ′ internally, the coordinate values on the digitizer 20 are converted to the coordinate values on the base coordinates by the calculation process shown in equations (3) and (4) above. Convert and original image 100 on transparent base 11
It is recognized as the position, shape, and size of the object. moreover,
Similar to the block diagram, the original image 100 is created using a computer 51.
A rectangle 110 is defined that is circumscribed by and has each side parallel to the x ^B or y ^B axis of the base coordinates, and the vertex 110A closest to the origin O ^B _i of the base coordinates of the rectangle is set as the coordinate origin (point O ^G _i ). , define a coordinate system with axes (x ^G - y ^G axes) parallel to the x ^B - y ^B axis of the base coordinates, that is, the original coordinate system, and define the original image 100 on the base coordinates.
The size and shape of can be recognized as a figure 100A on the document coordinate system. In this process, similar to the process for the block diagram, for example, the coordinate values on the base coordinates of the coordinate origin O ^G _i on the original coordinate system of the original image 100 on the transparent base 11 are (X ^B ₂ , Y ^B ₂ ). Then, the original image 100 on the transparent base 11 is recognized as the result of translating the original image defined on the original coordinate system by X ^B ₂ in the x ^B axis direction and Y ^B ₂ in the y ^B axis direction on the base coordinates. be done. The transparent base 11 on which the input document 100 recognized in this way is pasted is attached to the input drum 10. The transparent base 11 is provided with pin holes 11A and 11B for attachment to the register pins 61A and 61B of the input drum 10. input the coordinates on the transparent base 11.
It can be considered as a coordinate on 0. As a result of the above processing, inside the computer 51, the output position of the original image on the output drum 30,
The shape, size, and position and shape of the input document 100 attached to the transparent base 11 on the input drum 10,
The size is recognized. Original image 1 with the shape specified by the block diagram 101A
When outputting an image from 00 to the output drum 30, it is necessary to define the image output range and output magnification on the input document, which will be explained below. By the way, if the output magnification S is specified in advance by the console 50 when inputting the block diagram 101A, the image shown in FIG. The draft figure 101B defined on the shape coordinates is scaled and projected onto the document coordinates. As a result, as shown in FIG.
The coordinate values (X ^G ₄ , Y ^G ₄ ) of an arbitrary point on C (X ^K ₃ , Y ^K ₃ ) on the document coordinates are [X ^G ₄ Y ^G ₄ 1] = [X ^K ₃ Y ^K ₃ 1] 1/S 0 00 1/S 00 0 1...(7) At this time, the states of the input document 100A and the block diagram 101C defined on the document coordinates are as follows.
The original coordinates are converted to screen coordinates and displayed on the screen of the graphic display 52. However, since the correspondence with the image output range has not been established for the draft figure defined on the document coordinates displayed at this time, Read the coordinates, use the coordinate transformation formulas shown in equations (3) and (4) above, and change the parameters to θ′, −
Convert to coordinate values on the document coordinates as X ^D ₀ ′, −Y ^D ₀ ′. Then, the cursor is displayed on the screen corresponding to the position specified by the digitizer 20 by converting it into screen coordinates, and the position specified by the digitizer 20 is moved as shown in FIG. Specify the reference point SP1A. Similarly, on the input document attached to the digitizer 20, the bottom figure 1 shown in FIG.
Input document 100 corresponding to reference point SP1 of 01C
Specify the reference point ST1 of A. With this specification,
The coordinate values (X ^D ₅ , Y ^D ₅ ) of the reference point SP1 of the specified block diagram 101C on the original coordinates are the reference point of the input original.
It is translated in parallel to the coordinate values (X ^D ₆ , Y ^D ₆ ) of ST1, and an image output range 101E on the input document 100A is defined. At the same time, graphic display 52
Corresponding to the reference points SP1 and ST1 on the screen, the reference point SP1A of the master figure 101D is translated in parallel to the reference point ST1A of the input original 100B, and the image output range 101E on the input original is displayed in a specified manner. Through the above processing, for example, the coordinate values (X ^K ₃ , Y ^K ₃ ) of an arbitrary point on the draft figure 101B defined by the shape coordinates are lowered to the coordinate values (X ^G ₇ , Y ^G ₇ ) of the document coordinates. Converted by the formula. [X ^G ₇ Y ^G ₇ 1] = [X ^K ₃ Y ^K ₃ 1] 1/S 0 00 1/S 00 0 01 0 Δx ₁ 0 1 Δy ₁ 0 0 1 …(8) However, Δx ₁ =X ^D ₆ −X ^D ₅ , Δy ₁ =Y ^D ₆ −Y ^D ₅ .
By such coordinate conversion processing, when the block drawing figure 101B defined in the shape coordinates is converted and defined into the base coordinates, the block drawing figure 101 defined in the base coordinates is defined.
E indicates the image output range of the input document 100. In this case, the block diagram 10 in the shape coordinates
The coordinate origin of 1B O ^K ₀ , that is, the block coordinate point 10
The coordinate values of the base coordinate point BS1 corresponding to 2A are:
It is shown as X ^B =X ^B ₂ +Δx ₁ and Y ^B =Y ^B ₂ +Δy ₁ . At this time, the coordinate value of point 102A on the block coordinates is X ^H =
It is expressed as X ^H ₂ , Y ^H =Y ^H ₂ . On the other hand, when inputting the block diagram 101A, the output magnification S
If it is not specified, consider a magnification (for example, 70%) that makes the image smaller than the original image defined in the original coordinates. In other words, the maximum values in the x ^G axis and y ^G axis directions of the coordinate values of the original 100A defined on the original coordinates are X ^G ₈ and Y ^G ₈ , and the coordinates on the graphic of the master figure 101B defined on the shape coordinates. Value of X ^K axis and
When the maximum values in the Y ^K axis direction are X ^K ₉ and Y ^K ₉ , when X ^K ₉ /X ^G ₈ ≧Y ^K ₉ /Y ^G ₈ , S ₁ ≧X ^K _{9
/ X} ^{G 8 _} _{_} ^_ _{_} ^_ _{_ _} ^_ _{_} ^_ _{_ _} 10
1B is defined on the document coordinates. With this process,
The coordinate values (X ^G ₄ , Y ^G ₄ ) of the document coordinates corresponding to the coordinate values (X ^K ₃ , Y ^K ₃ ) of an arbitrary point on the block diagram 101B on the shape coordinates are [X ^G ₄ Y ^G ₄ 1] = [X ^K ₃ Y ^K ₃ 1] 1/S 0 00 1/S 00 0 1 (10). In this way, the state in which the original image shape 100A and the draft pattern 101C are defined is converted from the original coordinates to the screen coordinates of the graphic display 52 and displayed on the graphic display 52. However, the displayed block diagram 101
Since the correspondence between the output magnification and output range of D and the original image 100B is not specified, the coordinate values of the input document on the transparent base 11 attached to the digitizer 20 are read, and these coordinate values are calculated using the above equation (3) and ( By the coordinate transformation of equation 4), the parameters are changed to θ′, −X ^D 〓′, −Y ^D ₀ ′
Find the coordinate values on the original coordinates. Then, the cursor is displayed on the screen at the position specified by the digitizer 20 after conversion into screen coordinates, and the cursor is also moved to the reference points SN1 and SN2 of the block diagram 101C displayed as shown in FIG. 14A. Move and designate this as the reference point. Similarly, in the input document on the transparent base 11 attached to the digitizer 20, the reference point PN of the input document corresponding to the reference points SN1 and SN2 of the block diagram
1, specify PN2. With this designation, the computer 51 selects the block diagram 101 on the original coordinates.
The reference points SN1 and SN2 of C are made to correspond to the reference points PN1 and PN2 of the input document 100A. For this reason,
The coordinate values of the reference points SN1 and SN2 of the block diagram 101C and the reference points PN1 and PN2 of the input manuscript 100A are
SN1 = (X ^G ₁₀ , Y ^G ₁₀ ), SN2 = (X ^G ₁₁ , Y ^G ₁₁ ), PN1
When = (X ^G ₁₂ , Y ^G ₁₂ ), PN2 = (X ^G ₁₃ , Y ^G ₁₃ ,
The amounts of parallel movement Δx ₂ , Δy ₂ and magnification S ₂ are as follows. Δx ₂ =X ^G ₁₂ −X ^G ₁₀ Δy ₂ =Y ^G ₁₂ −Y ^G ₁₀ …(11) |X ^G ₁₂ −X ^G ₁₃ |/|X ^G ₁₀ −X ^G ₁₁ |≦|
S ₂ ⁼ | ^{X G} ₁₂ −X ^G ₁₃ ^| _/ ^| X ^G _{10 −X} ^G ₁₁ ^| when S ₂ = | _{X G 12} ^{−X G} ₁₃ ^| _/ ^| _X ^G _{10 −X} ^G _{11 |} ^{| _} _{_} ^_ _{_}
｜Y ^G ₁₀ −Y ^G ₁₁ ｜ When S ₂ =｜Y ^G ₁₂ −Y ^G ₁₃ ｜ /｜Y ^G ₁₀ −Y ^G ₁₁ ｜……(12) In this way, the block diagram on the original coordinates is 101
The magnification of C is converted and translated in parallel on the document coordinates. As a result, the coordinate values (x ^G ₃ , y ^G ₃ ) on the original coordinates corresponding to the coordinate values (X ^K ₃ , Y ^K ₃ ) of an arbitrary point on the block diagram 101B on the shape coordinates are [X ^G ₃ Y ^G ₃ 1] = [X ^K ₃ Y ^K ₃ 1] 1/S ₂ 0 00 1/S ₂ 00 0 11 0 Δx ₂ 0 1 Δy ₂ 0 0 1 (13). As a result of the above, the block diagram 101C on the document coordinates is converted into a graphic 101E that corresponds to the document shape 100A. This situation can be seen in the 14th
Shown in Figure A. This result is converted into screen coordinates and displayed on the graphic display 52, and it is confirmed whether the displayed block diagram 101E and the original image 100B are in the desired positional relationship. This situation is shown in FIG. 14B. If they are not compatible, use the reference points SN1, SN2, PN1, etc. as described above.
Instruct the association of PN2 again. In addition, the 14th
Figures A and B show the relationship between original coordinates and screen coordinates for the original image 100, and the same applies to the original image 200. From the above, each coordinate value (X ^K ₃ , Y ^K ₃ ) of the block diagram 101B on the shape coordinates is as follows: [X ^B ₇ Y ^B ₇ 1] = [X ^K ₃ Y ^K ₃ 1] 1/S ₂ 0 ⁰⁰ 1/ _{S 2} ⁰⁰ _{0 1} ×1 ₀ The converted block diagram 101E defined on the base coordinates indicates the image output range of the input document. The output magnification S at this time is S=S ₂ , and the coordinate origin ^OK of the block diagram 101B in the shape coordinates, that is, the point _BS1 on the base coordinates corresponding to the point 102A on the block coordinates.
The coordinates of are X ^B = X ^B ₂ + Δx ₂ and Y ^B = Y ^B ₂ + Δy ₂ .
The coordinate value of the origin O ^K ₀ on the block coordinates is X ^H = X ^H ₂ ,
Y ^H = Y ^H ₂ . Thus, the position and shape of the image output to the output drum 30 specified by the input of the block diagram 101A, and the image output range and output when the original image 100 pasted on the transparent base 11 is mounted on the input drum 10. The magnification is determined. Image output of the origin 102A on the block coordinates corresponding to the shape coordinate origin O ^K ₀ and the original image on the base coordinates for converting the block copy figure 10B on the shape coordinates to the block copy figure 101A on the block coordinates. Coordinates are associated with the origin BS1 on the base coordinates in order to correspond with the range. Coordinate conversion and coordinate management between each device are performed as described above. Next, the operation of the above-described image input/output system will be explained. Using the digitizer 20 and the console 50, the graphic code necessary for the layout of the output image,
The position information is input to the computer 51, the computer 51 generates a graphic according to the input graphic information, and transfers the generated graphic data to the graphic display 52 for display. Then, the operator judges whether the figure is good or bad while looking at the screen displayed on the graphic display 52, and if there is any correction or addition, he or she makes the correction using the digitizer 20 and the console 50. It should be noted that the inputting of the printing figure is similar to that of a commonly used printing machine, and a light pen may also be used. Next, color original images A to D to be output as layouts.
is pasted on the transparent base 11 as shown in FIG.
is positioned by engaging with the pins 21 and 22 of the digitizer 20 and set at a predetermined position. Then, the color original pictures A to D corresponding to the above-mentioned input figures are sequentially selected by instructions to the digitizer 20 and key operations on the console 50, and the hiding process of the figures and the output range for the color original pictures A to D are specified. Do this. Here, the output range is specified by specifying two diagonal points in the case of a rectangular figure, and by specifying the center point in the case of a circular figure. Furthermore, input the necessary magnification to make the color original images A to D correspond to the figures A' to D' on the output screen, and at the same time input the necessary magnification for color correction processing, sharpness emphasis, and gradation conversion processing. Processing condition parameters are input through the console 50. Next, the computer 51 determines the starting position Y ^S _i and end position Y ^E _i of the color original picture CP on the output drum (screen) as shown in FIG. 15 for each input graphic unit.
is calculated according to the main scanning line X _i and stored in a storage device such as a magnetic disk. That is, first, the X-axis position X ₁ where the scanning line in the main scanning direction first crosses the color original CP is stored, and the starting point Y ^S ₁ and the end point on the Y-axis where this scanning line X ₁ passes over the color original CP are stored. Store the point Y ^E ₁ . ^Similarly _, for ^the _{next scanning line} Stores the point and end point. Therefore, the graphic data of the color original picture CP stored in the storage device is as shown in Table 1 below for the example of FIG.

[Table] Graphic data of such color original images are sequentially stored for each original image pasted on the transparent base 11. Next, the pin holes 11A and 11B of the transparent base 11 to which the color originals A to D have been pasted are engaged with the register pins 61A and 61B of the input drum 10, thereby positioning and mounting. By driving the motor 12, the input drum 10 (output drum 30) is rotated in one direction. A rotary encoder 13 is attached to the rotation shaft of the input drum 10, and its output pulses are It is designed to be input to two address registers in a timing control circuit 55 managed by a setter 53. One address register manages absolute coordinates in the rotation direction (main scanning direction), and the other address register manages relative coordinates of input pixels. Here, absolute coordinates and relative coordinates will be explained. The absolute coordinates are used to manage the coordinates of each input and output drum, and are counted based on the origin of each input and output drum. BS1, BS2, 1 mentioned above
Points such as 02A and 102A are managed using these coordinates. It is also used to control the coordinates of output pixels as shown in FIG. 17B. On the other hand, relative coordinates are used for managing input pixels. Figure 17 A, B
In the apparatus described here, the output pixel size is constant, and magnification conversion is performed by changing the sampling pitch of the input pixels while keeping the same size on both the x and y axes. That is, the size of the input pixel is changed. The sampling timing control of the input pixel whose sampling pitch has been changed is performed using relative coordinates. Note that the magnification conversion method in the y-axis direction may be the one normally used in color scanners, and the
For axial magnification conversion, the pulse motor 33 on the output drum 30 side is driven at a constant speed, and the input drum 10
This is done by changing the rotational speed of the side pulse motor 14. Thus, the positions of the reading head 16 and the output head 32 in the sub-scanning direction are determined by counting the outputs of the linear encoders 17 and 35 by the address register in the timing control circuit 54. Here, the reading head 1 of the input drum 10
6 is away from the start position SP by x ₁ , and the output head 32 of the output drum 30 is away from the start position SP.
If the reading head 16 is separated by x ₁ and the magnification is M, then the output head 32
will move M x. In other words, the ratio of the distance traveled by the reading head 16 and the output head 32 in the sub-scanning direction per unit time is the magnification M. However, the control method differs depending _on the magnitude relationship between x ₁ and X ₁ /M, and when _{x 1} ≧X ₁ /M (15), )
After the reading head 16 is controlled to move independently by the number of times the reading head 16 is moved, the reading head 16 and the output head 32 are controlled to move simultaneously. In this way, when the reading head 16 comes to the start position, the output head 32 will also be at the start position SP, making it possible to synchronize in the sub-scanning direction. In addition _, in the case _of X _{1 <}
The output head 32 is controlled to move independently by the number of times the read head 16 and the output head 32 are moved simultaneously. On the other hand, management of input and output image information in the main scanning direction is performed as follows. As shown in FIGS. 17A and 17B, the point P (x ₁ , y ₁ ) is set as the point closest to the origin of the circumscribed rectangle of the figure to be imaged on the input drum 10, and the image is normalized to a predetermined unit of pixels. expressed in relative coordinates. Then, point Q corresponding to point P
(X ₁ , Y ₁ ) is expressed in absolute coordinates normalized by a predetermined unit of image on the output drum 30. In this way, the pixel points of the input/output image can be represented by the lattice points shown in FIGS. 17A and 17B. and,
After the density pixel data converted into a digital quantity by the AD converter 41 is processed by the signal processing circuit 42, the increment timing starts from when the y-direction address register of the input drum 10 becomes "y ₁ ". The start point and end point are sequentially stored in the buffer memory 43. When the buffer memory 43 is used in the output mode, it becomes valid from the point when the address register becomes "Y ₁ " in the Y direction, and from the starting point Y ^S _i to the ending point Y ^E _i with Y ₁ as the origin.
control to output pixels up to The buffer memory 43 has two lines for each line, and when one is used in the input mode, the other is in the output mode. Therefore, the output image is output with a delay of one line compared to the input image. In the above-described embodiment, there are four types of input original images A to D, but the shape and number of input original images are arbitrary, and the layout of the output image can also be input in any shape. In addition, although color correction and gradation conversion are performed digitally in the above example, they can also be performed analogously, and reading input images and outputting layout images are performed on a flat surface rather than on a cylindrical drum. This is also possible with a scanning scanner. Further, the output image may be a color image, a monochrome image, or a halftone image using a halftone processing circuit and a halftone dot control circuit, and the recording material may be a color positive film or a monochrome film. Furthermore, in the above description, the magnification of the image output is controlled by changing the scanning speed on the input side, but the scanning speed on the output side may also be changed. In the above description, the image signal AD-converted by the AD converter 41 is color-processed by the color processing circuit 42, and the color-processed signal is stored in the memory 43. It is also possible to store the information in the image data and perform color processing using a color processing circuit upon output. As explained in detail above, the method for positioning an input original image of the present invention involves pasting the original image to be input on a transparent base, providing register pin holes in the transparent base, providing register pins in the input drum and digitizer, Since this is done by engaging pins and pin holes, the coordinates of the input original image on the input drum can be easily and accurately correlated with the coordinates on the digitizer, making coordinate management easy. There is an advantage. Note that in the above example, two register pin holes are provided along the upper side of the transparent base, but the position, shape, and number of pin holes are arbitrary, and corresponding pins are provided on the digitizer and input drum. Just do it like this. Further, the base does not necessarily have to be transparent, and it is sufficient if the base document input and image input can be performed.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram showing an image input/output device to which the present invention can be applied, FIG. 2 is a diagram showing the scanning state of the input (output) drum, and FIGS. 3 and 6 are digitizer coordinates, Figures 4 and 5 are diagrams for explaining the relationship between output drum coordinates; Figures 4 and 5 are diagrams for explaining the positioning method of the present invention; Figures 7A and B are diagrams for explaining hidden surface processing; and Figure 8 is a diagram for explaining the hidden surface processing. A and B are diagrams for explaining the relationship between the input original image and the layout image, Figures 9 to 14 are diagrams for explaining the coordinate relationship between each device, and Figure 15 is the input image. 16A and B are diagrams to explain how to synchronize the input drum and output drum, and Figures 17A and B are input/output images and image information. FIG. 10...Input drum, 11...Transparent base, 12...
Motor, 13... Rotary encoder, 14... Pulse motor, 15... Lead screw, 16... Image reading head, 17... Linear encoder, 18... Guide rail, 20... Digitizer (graphic input device), 21, 22... Register pin, 30... Output drum, 31... Color paper, 32... Output head, 33... Pulse motor, 34... Lead screw, 35... Linear encoder, 36... Guide rail, 40... Logarithmic circuit, 41... AD converter, 42... Color Processing circuit, 43... Buffer memory, 44... DA converter, 45... Modulator, 46... Laser oscillator, 50
...Console, 51...Computer, 52...Graphic display, 53...Microprocessor, 54...Bus line, 55...Timing control circuit.

Claims (1)

[Claims] 1. According to the figure input by the digitizer, at least one original image on the input drum is output as a layout at the specified position and magnification on the recording material on the output drum, and multiple original images can be output in one scan. In a method for positioning an input original image in an image input/output device, register pin holes are provided at a plurality of locations in a flexible transparent base that can be attached to the input drum and digitizer, and register pins that engage with each of the register pin holes are provided. By positioning the transparent base at each predetermined position by engagement of the register pins and register pin holes provided on the input drum and the digitizer, the coordinates of the original image pasted on the transparent base on the digitizer and the input 1. A method for positioning an input original image in an image input/output device, characterized in that it can be easily correlated with coordinates on a drum.