• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention can be used in the manufacture of corrected and retouched color-separated photoforms using electronic image processing. The aim of the invention is to enhance retouching capabilities by transferring information point by point. The method consists in that with the point-by-point and construction sweepings of the original, the points to be retouched mark, divide the signal into color components, convert to digital form and memorize, and correct these points from the copy area by determining the distance coordinates between marked reading points and recording points by forming a difference in coordinates, this difference is kept when moving inside the retouching area, while at least for one of the separations new values are determined Cheney color copy of the region and replacing the old value with a new one. The method is implemented by a copy retouching device. 2 sec. f-ly, 4 zp f-ly, 4 ill. J
    公开号:SU1768043A3
    申请号:SU833672042
    申请日:1983-12-08
    公开日:1992-10-07
    发明作者:Клие Юрген；Нель Райнер
    申请人:Др.-Инж.Рудольф Хелль Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to an electronic reproduction technique, in particular, to the manufacture of corrected and retouched color separation photoreforms using an electronic image processing installation.
    The aim of the invention is to enhance the retouching capabilities due to the point-by-point transfer of information from the copy area to the retouch area.
    FIG. 1 shows a device for carrying out copy retouching for electronic reproduction of color images; in fig. 2 - various forms of the brush surface; in fig. 3 - a graphic image of the registration of coordinates; in fig. 4 shows an embodiment of the coordinate processor.
    The storage device 1 (magnetic disk, magnetic tape, etc.) contains color-corrected digital color values of Y, M, C, and K for the separation of yellow (Y), purple (M), cyan (C), and black (K ) color image to be reproduced. The color values of Y, M, C and K, hereinafter referred to as F, may, for example, have a word length of 8 bits. So, besides black (O) and white (255), there may be another 254 gray steps.
    The retouchable color image can be either a separate image or a mounted printed page. The color values of an individual image are first obtained in an electronic color spacer-color corrector (scanner}

    About 00
    about
    Ј
    with

    with
    by point-wise and line-by-line three-color scanning of the original, by color correction and analog-to-digital conversion of color separation signals.
    The uncorrected F color values or the already retouched F color values (as in the prototype) can also be stored in the memory 1.
    The retouch position has a color monitor 2, on the screen 3 of which a color or color separation image is displayed, for example, from 512x512 image points for visual control during retouching. The color value F used to display on the color monitor 2 is selected from the general data set of the storage device 1 point by point and retransmitted from the general data set of the storage device 1 to the drive 7 of the original and to the drive 8 copy so that at the beginning of retouching the contents of the drives are identical.
    Drives 7 and 8 are made in the form of image repetition memory for obtaining a stable image on the screen 3 of the color monitor 2 and in accordance with the number of color values F used for image acquisition and the length of their words have in each case a capacity of 512x512 memory locations of 8 bits for color separation.
    Each inserted color value F of a picture point in the memory may be addressable by its pair of position coordinates.
    Instead of two blocks of the image repetition memory, a single image repetition memory can be used.
    The memory management device 9 through the address bus 10 optionally cycles through the addresses of the storage device 7 of the original and / or storage device 8 for copying. The F color values stored in the accumulator are read by the data generated in the memory management device 9 via the control bus 11, line by line and within each line, by image points and data buses 12 and 13, and fed to multiplexers 14-17.
    From the multiplexers 14-17, the color values along the common data bus 18 go to the light-mark generator 19 and from there to the analog-to-digital converter 20, which converts the digital color values F to four analog color separation signals.
    The copier memory processor 21 connected thereto forms from the analog color separation signals three control signals g, g and b for the color monitor 2, wherein the processor 21 provides. representation of an image that produces a color impression of genuine multi color printing.
    The recording on the screen 3 of the color monitor 2 is performed using an interlaced scanning method to obtain an image without
    0 flashes.
    The clock generator 22 forms the usual horizontal and vertical deflection signals used in television technology.
    5 signals, as well as initial pulses for lines and images on multiplex channel 23.
    The memory management device 9 on the following multiplex channel 24 through 0 provides synchronizing horizontal and vertical pulses to the clock generator. So that the point-by-point reproduction of images on the screen 3 of the color monitor 2 is synchronized with the reading of the color values F from the storage 7 of the original or from the storage 8 copy.
    The retouching location consists of a coordinate registration device 25 for marking the coordinate pairs of the location X and Y, from
    0, a coordinate processor 26, followed by, a computational circuit 27 for color values of F, as well as an introductory stage 28 with a keyboard for selecting certain functions.
    5 By copying the retouching, a drawing or structure from one of any of the image areas, hereinafter referred to as the reading area, is borrowed and, exactly at the image points, is transferred and copied.
    0 on another, freely selected by the shape and size of the image area, in the following called the recording area. In this case, the recording area may be or the damaged part of the image, in which
    5, the design or structure, or part of the image, should be restored to which the design or structures that occur only once on the original should be transferred.
    0 Copy retouching can appear in a color image, i.e. in all color separations or on selected color separations.
    For copy retouching
    The 5 color values of the desired read area are read from the accumulator 7 of the original and converted into modified values of the optical density of color in the computational circuit 27. Following this, in the copying drive 8, the corresponding
    the color values Fs of the desired portion of the recording are exactly point-wise replaced by the modified color values F s.
    In the first step of the method, the desired recording area and the reading area are roughly determined, while the retoucher, using the coordinate registration device 25, marks inside the sections one recording point Si and one reading point U and sets the distance between them. The coordinate registration device 25 consists of a digitalization panel 29, a marking device, for example in the form of a dowel pin 30, and a measuring stage 31.
    Suppose that the color image 32 to be retouched is on the digitizing panel 29, and the retouching is presented on the screen 3 of the color monitor 2.
    The selected read portion 33, in which the pattern is particularly well reproduced, and the corresponding recording portion 34, to which the pattern is to be transferred, are indicated by dashed lines.
    The selected areas 33 and 34 are determined roughly when the retoucher inside the reading section 33 marks the reading point U and within the recording section 34 the recording point Si. Point . ; neither the U and the recording point Si are spaced apart from each other by the distance D. The coordinates given out by the measuring stage 31, the coordinates of the reading point X LI and YLI, as well as the coordinates of the recording point Xsi and YSI, are transmitted to the coordinate processor 26 and lay on the command memorization.
    The memory command is issued by the retoucher by pressing a key in the introductory step 28 along line 36 to the coordinate processor 26. In the coordinate processor 26, the distance D between the marked reading point U and the recording point Si is calculated based on the difference coordinates XD and YD
    Xo XLi-Xsi,
    YD-YLI-YSI, (1)
    D-VX 6 + Y 6.
    The calculated difference values of the coordinates XD and YD are also stored in the coordinate processor 26, thereby fixing the distance D.
    In the second step of the method, the retoucher marks the desired section 34 of the recording in shape and size when it leads the pin 30, as well as the retouching brush along tightly aligned lines to each other, through the corresponding surface, while
    at the same time, the corresponding read portion 33 is also marked.
    Marked with the passage of recording points S section 34 records coordinates Xs
    and Ys of the recording points via the coordinate processor 26 and the address 37 bus go directly to the computing circuit 27, as well as the addresses of the recording of the copying drive 8 to the memory management device 9.
    At the same time, coordinates of read points X | and YL of those read points L which, with respect to the write points,
    the distance passed by the pin 30, have a distance D, while the difference values of the coordinates XD and YD are added to the obtained coordinates of the recording point Xs and YS:
    XL XS + XD,
     YL YS + YD. (2)
    In this way, a second pin is modulated, which moves synchronously with pin 30 on
    constant distance from it D and passes over the surface of the read section 33, which is in shape and size corresponds to the write section 34. By using a double dowel pin, which simultaneously marks two image points that are spaced apart from each other at a distance D., an exact process of image points is achieved for copying patterns and structures.
    The coordinates of the read points XL and YL selected by the coordinate processor 26 on the address 38 bus are fed to the computation circuit 27. And also as read addresses for the source memory 7 of the original,
    memory management device 9.
    In the coordinate processor 26. In addition, a command for changing coordinates is formed when the coordinate pin 30 shifts by one point in the image.
    The coordinate map command is transmitted along control line 39 to computational circuit 27.
    Each time, on a command, the coordinate change of the computational circuit 27 on the address 10 bus causes the read addresses XL and YL in the original memory, where the FL color values of the read section 33 are stored, as well as the write addresses Xs and YS related to them in the memory These are the copies where the intended for replacement of the color values FS of the recording section 34 are laid. The retoucher, by pressing the corresponding key on the introductory stage 28, determines which of each color separation
    the FL color value should be taken and in which color separation the FS color values should be entered, as well as the type of color value change. Corresponding commands for selecting color separation from the introductory stage 28 along control line 40 fall into computational circuit 27. In this case, the retoucher has a free choice. The color values FL of one color separation or any color separation combination can be transferred to the same or another place or to any other color separation combination.
    The color values FL and Fs, called from the accumulator 7 of the original and the accumulator 8 copying over the data bus 6, are transferred to the computation circuit 27. In the computation circuit 27, the FS and FL color values calculate the values for the F s, which are then over the data bus 6 rewritten into the addressable area of the recording of the copying drive 8, replacing the original color values present there, while the color values in the original storage drive 7 are retained.
    In the first kind of copy retouching, the color values for the F s for recording points are calculated from the expression a FL, as a percentage of the relative content of the relative read points L of the color values FL, and the ratio of the relative content a can also be 1 For the case where copying retouching is done in a color image, i.e. in all separations, for individual separations, the following relationships are obtained:
      and yl.
    M s am-m
      ac CL,
      ak kl.
    When copying retouching is to be performed in one single color separation, for example in color separation yellow, ay YL is obtained, and in case copying retouching should be made from one color separation to another, for example, when transferring a shadow from the separation color purple to color separation black get K s am ML.
    With a different kind of copy retouching, the new color values for F s for recording points S are calculated from the expression F sa Fs + b -Ft by weighted addition of the original color values FS of recording points S and the color values FL related thereto. reading points L, while this kind of copy retouching can also be produced as in
    color image, and in one of the separations.
    With this type of retouching, for example, double images can be obtained.
    In order to evaluate the result obtained by copying the retouching, the image of the original can also be shown on the screen 3 of the color monitor 2 for comparison with the retouched color image. For this, the color monitor 2 can optionally be connected to the original memory or the copy memory using the multiplexers 14-17.
    The retoucher presses the corresponding key in the input stage 28, which causes the command to switch the image from the input stage 28 through the control line 41 to the multiplexers 14-17.
    The copying retouching can be performed partially by a return stroke, when the retoucher passes by a dowel pin 30 over the desired partial image area and the constant color values FL of the address area of the memory of the source memory 7 are copied to the copy address area.
    Copy retouching may be completely unnecessary, while all the values of optical density of color FL from the accumulator 7 of the original will be copied to the copy memory.
    To clarify the registration of the coordinates, it was assumed that a color image is found on the digitizing panel 29, which is not the case when actually working at the retouching site,
    In this case, to visualize the points marked on the digitizing panel 29, on the screen 3 of the color monitor 2 highlight the corresponding light marks 42, which move along the screen in synchronization with the double pin. For this, the memory management device 9 compares the cyclically called addresses to receive the image with the addresses marked by the coordinate registration device 25, and each time the addresses match, the corresponding light commands are issued, a label from the memory management device 9 on the control line 43 to the light generator 19 tags.
    Commands of the light marker appear exactly at the moment of time when the electron beam of the color monitor 2 passes through the marked points of recording and reading on the surface of the screen. The command light marker activates the generator 19 light marks, which briefly forms
    control signals for color monitor 2.
    This simultaneously includes all three electronic generating systems of the color monitor 2 with the highest possible sbatnosti, with the result that white light marks 42 appear on screen 3. To distinguish both light marks 42, one of the light marks may be blinking or having a different shape. .
    In order to more quickly pass large portions of the color image, the areas covered by the action of the double coordinate pin on the recording side and the reading side can be increased.
    In this case, the coordinate pin 30 itself marks each time only the midpoint of its zone of action from the recording side, while the recording coordinates Xs and YS of the recording points that fall within the range of action are calculated in the coordinate processor 26 from the coordinates of the midpoint XSM and YSM . In the coordinate processor 26, the corresponding coordinates of the reading point XL and YL of the action area of the double dowel pin on the reading side are also determined. The size and shape of the zone of action can be determined by the number and position of the simultaneously calculated coordinates with respect to the coordinates of the marked midpoint. From the input stage 28, the magnitude and shape of the zone of action can be set on the control line 44 to the coordinate processor 26. The enlarged zones of operation are shown on the screen 3 of the color monitor 2, respectively, by light marks 42.
    .-. Different in form and size of installation of both zones of action of a double pin for copying retouching, it is possible to simultaneously change the scale, and the scale factor is determined by the ratio of the surfaces of the zones of action.
    Since, for different zones of operation of a double pin, in each case a different number of original FLH color values to be replaced from FS color values is addressed. in the copy memory 8, the replacement value F s is calculated by combining or interpolating the color values.
    FIG. Figures 2a-2b show various shapes and sizes of zones of action of a double dowel pin: a square area 45, covering 5x5 image points 46, a rectangular action area 45 with 3x7 image points 46, and an action area 45,
    approaching the shape of the circle, respectively.
    To determine the coordinates of the recording points Xs and YS, as well as the coordinates of the read points XL and YD using the double dowel pin in FIG. 3 shows with a cut-out the digitization panel 29 of the coordinate registration device 25 with a side action zone 47
    0 write and read zone 45 for any position of the double dowel pin.
    Within the coordinate system 47, the action zone 45 on the recording side has the coordinates of the midpoint XSM and YSM and the action zone 45 on the read side has the coordinates of the midpoint XLM and YLM. Zones 45 and 45 have auxiliary coordinate systems 48 and 481 assigned to them.
    0 Auxiliary coordinate systems 48 and 48 pass through the midpoints 49 and 491 of zones 45 and 45, and move with the movement of the double pin. In the auxiliary coordinate systems 48 and 48, the auxiliary coordinates XSH and YSH, as well as the XLH and YLH of those image points that are involved in the formation of zones 45 and 451 actions, are placed in terms of shape and size. The mean points 49 and 491 of the zones 45 and 451 of the action are at a fixed distance D from each other, or otherwise they have the distances XD and YD measured in coordinates.
    Using the pin 30
    5 marks the midpoint coordinates of the XSM and YSM of the action zone 45 on the recording side. The coordinates of the recording points Xs and Ys for one point that falls within the action zone 47 from the recording side are calculated using the equations:
    0 XS XSM + XSH.
    Ys YSM + YSH. (3)
    The corresponding coordinates of the readout points are XL mU for the readout point falling into the action zone 47 from the side
    5 readings are determined by the equation XL XLM + XLH.
    YL YLM + YLH.; (4)
    the midpoint coordinates XLM and YLM are obtained from equation (2).
    0 FIG. 4 shows an exemplary embodiment.
    coordinate processor 26 for the case in which the double dowel pin has increased coverage.
    The coordinates of the midpoints XSM and YSM output by the coordinate registration device 25 via the bus 35 and the comparison block 50 are transferred to the adder 51.
    In block 50 of the comparison, the current, one after the other pairs of coordinates of the mid-points XSM and YSM are compared with each other and
    when changing coordinates, which occurs when the coordinate pin 30 moves, the comparing cascade issues a command to change coordinates along the line 39 to the address counter 52, the Address counter 52, which is started each time by a change of coordinates command, causes all possible coordinate values to be cyclically and line by line on the bus 53 data to the computing unit 54.
    The computational 54 block with the help of the programming input 55 is programmed with the parameters of the desired zone 45 or 45 of the action according to one of FIG. 2a-2b. The values of the coordinates, caused by the address counter 52, are then checked in the computational block 54. whether they fall into the specified zones 45 and 451 of the actions.
    If they fall into the coverage area, the corresponding XSH and YSH coordinates of the action zone 45 from the write side of the data bus 56 are output to the adder 51, where, according to equation (3), the write point coordinates Xs and YS are formed on the address 37 bus. The corresponding auxiliary coordinates XLH and The YLH zones 451 from the read side of the data bus 57 fall into another adder 58.
    In the distance calculator 59, the difference values of the coordinates XD and YD are first calculated by equation (1) and entered into the memory. From the coordinates of the midpoint XSM and YSM of the action zone 45 from the recording side and the differential values of the coordinates Xp and YD embedded in the memory in the adder 60, the coordinates of the midpoint XLM and YLM are calculated using equation (2) and are fed to the adder 58 via bus 61 in which, according to equation (4), the current coordinates of the read points XL and YL are formed on the address 38 bus.
    权利要求:
    Claims (6)
    [1]
    1. A method for copy retouching for electronic reproduction of color images in which point-by-point and line-by-line scanning of an original, splitting scanning light into color components, measuring color components as color signals, converting color values of individual points of an image into a color value for separations, converting digitizing and storing color values, marking image points to be retouched, defining new color values and color correction to be ret Ears of image points with the help of new color values, characterized in that, in order to enhance retouching capabilities due to the point-to-point transfer of information from the copy area to the retouch area, mark the image point to be copied inside the copy area as a read point (L), and
    Retouching inside the retouching area, as a recording point (S) and setting the coordinates (Xi; YU and Xsi; Ysi) reading points (L) and recording points (S), determine the corresponding coordinates of the distance between the reading point (L) and the recording point (S) and remember the distances as coordinate differences (LHr; D YD), when marking the image points to be retouched within the retouching area, the image points within the copying area that are to be copied within the copy area ( Ho; A YD) and determine for each image point to be retouched within the retouching area for at least one of the separations, a new color value from at least one color value equal to the distance of the image point to be copied inside the copy area, and the old color value the image points to be retouched are replaced with a new specific color value.
    [2]
    2. The method according to claim 1, wherein
    in that the new value of the image point to be retouched is additionally determined from its original color value by adding the color components of the corresponding image point to be copied and the image point to be retouched,
    [3]
    3. Method according to paragraphs. 1 and 2, characterized in that the method is carried out simultaneously for several image points.
    [4]
    4. A device for copying retouching for electronic reproduction of color images, containing memory means for color values, a color monitor for presenting a color image, and a coordinate registration device with a marking device for recording the coordinates of image points,
    expanding retouching capabilities by transferring information to descendants, it contains an original storage for non-retouched color values and a copy storage for retouched color values whose inputs are connected to a storage medium, and outputs to a color monitor, a storage control module for memory address outputs connected to an address the input of the source and copying accumulator, the calculation scheme for forming new color values, connected to the original accumulator, the copying accumulator and to a memory management unit, and a coordinate processor for determining the coordinates of image points (X, Y) of both copying and retouching areas for the image point coordinates recorded by the marking device, connected to the drive control unit, the calculation circuit and the coordinate registration device.
    [5]
    5. The device according to Claim 4, of which there are four additional multiplexer circuits, the inputs of which are connected to the original storage device and the copy storage device, and the outputs to a color monitor.
    [6]
    6. The device according to PP, 4 and 5, that is, so that the coordinate processor includes a registration comparing unit
    coordinates (X, Y) of image points, an address counter controlled by a comparison unit for cyclically calling coordinate values, a computing unit connected to an address counter for calling auxiliary coordinates (X. YH), an adder for generating image coordinates of image points (Xs, YS) the retouching area, which is connected to the comparison unit 10 and to the computational unit, a distance calculator determining and storing the distance between the reading point and the recording point from the recorded coordinates of the image points at the reference points yva- 15 and audio recording of the second adder, using the registered image coordinates of points and coordinates of distances Ho, YD), and a third adder for forming image coordinate points 20 (XL, YL) copy area, which is connected to the computing unit and the second adder
    -45
    -46
    FIG. 2o
    Wutts
     45
    -46
    46
    (Reg. 28
    Schig.Z
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    EP82111504A|EP0111026B1|1982-12-11|1982-12-11|Process and device for the copying retouching in the electronic colour picture reproduction|
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