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    • 2. 发明授权
    • Video retouching systems
    • 视频修饰系统
    • US4668980A
    • 1987-05-26
    • US811218
    • 1985-12-20
    • Peter W. StansfieldAlastair Reed
    • Peter W. StansfieldAlastair Reed
    • G03F3/08H04N1/407H04N1/46H04N1/60H04N1/62
    • H04N1/6011H04N1/622
    • A method and apparatus for retouching an image represented by color printing data in the form of a number of sets of input data, one set for each of the printing colors, is described. The apparatus comprises a source (1) of color component image data; a reference data set generator (2;9,10) for generating a reference data set comprising the color components of a limited plurality of reference colors; and a color converter (2;9,10) for generating a temporary data set from the color printing data and the reference data set, the temporary set representing the original image in terms of the reference colors. A refresh store (3) receives the temporary data set and feeds the temporary data set to a monitor (8) via a conversion system. The conversion system includes one or more look-up tables (5) defining printing ink modifying functions and an operator table (6) for controlling the contents of the or each look-up table (5). The arrangement is such that the temporary data set is applied to the monitor (8) via the look-up tables (5) whereby the color components defined by the temporary data set are modified in accordance with the contents of the look-up tables before passing to the monitor (8). Due to the limited plurality of reference colors with which the original image is defined, it is possible for the operator to retouch the image displayed on the monitor (8) in real time and interactively.
    • 描述了以多个输入数据集合的形式来对由彩色打印数据表示的图像进行修饰的方法和装置,对于每个打印颜色设置一组。 该装置包括颜色分量图像数据的源(1) 用于产生包括有限多个参考颜色的颜色分量的参考数据集的参考数据集发生器(2; 9,10); 以及颜色转换器(2; 9,10),用于根据所述彩色打印数据和所述参考数据集生成临时数据集,所述临时组根据参考颜色表示原始图像。 刷新存储器(3)接收临时数据组,并通过转换系统将临时数据组馈送到监视器(8)。 转换系统包括一个或多个定义打印墨水修正功能的查找表(5)和用于控制该或每个查找表(5)的内容的操作表(6)。 这种布置使得经由查找表(5)将临时数据集应用于监视器(8),由此根据临时数据集所定义的颜色分量根据查找表的内容进行修改 传递到监视器(8)。 由于限定了原始图像的多个参考颜色的限制,操作者可以实时和交互地修改显示在监视器(8)上的图像。
    • 6. 发明授权
    • Reproduction of colored images including overprinting for reproduction
of bright colors
    • 复制彩色图像,包括重印明亮色彩的套印
    • US4774567A
    • 1988-09-27
    • US97011
    • 1987-09-16
    • Peter W. StansfieldAlastair Reed
    • Peter W. StansfieldAlastair Reed
    • G03F3/08B41J2/525H04N1/46H04N1/54H04N1/60
    • H04N1/54
    • In color printing it is customary to print images in a combination cyan, magneta, and yellow printing inks. However, it is sometimes required in the printing of the final image, to include an ink of a special color, for example a brown ink, which cannot be reproduced by combining cyan, magenta and yellow inks. The present invention is concerned with the preparation of a special color printer for a special printing ink. According to the invention sets of values (C.sub.ROP, M.sub.ROP, Y.sub.ROP, K.sub.ROP) defining the characteristic elements of curves for cyan, magenta, yellow, and black, which curves together correspond to a range of values for the overprinted colored separation, are stored. For each picture element, a combination of color component values for cyan, magenta, yellow and black (C,M,Y,K) are derived and compared with different sets of values (C.sub.ROP, M.sub.ROP, Y.sub.ROP, K.sub.ROP) derived from the stored curve elements, each set corresponding to a different value of the overprinted special color separation (R.sub.OP). A value is selected for the desired special color separation for which each of the stored values of the related set (C.sub.ROP, M.sub.ROP, Y.sub.ROP, K.sub.ROP) is not greater than the corresponding value (C,M,Y,K) derived from the picture element of the original. The stored values (C.sub.ROP, M.sub.ROP, Y.sub.ROP, K.sub.ROP) are then subtracted from the corresponding values (C,M,Y,K) to get residual values (C',M',Y', K'). The residual values (C',M',Y',K') are then modified to give a corresponding set of modified values (C",M',Y',K') and a special color separation value (R) is selected which is overprinted to constitute the selected overprinted special color.
    • 9. 发明授权
    • Image assembly
    • 图像组装
    • US5140314A
    • 1992-08-18
    • US310576
    • 1989-02-15
    • Peter W. StansfieldMartin Rosen
    • Peter W. StansfieldMartin Rosen
    • G06T11/60G06T1/00G06T1/20
    • G06T1/20G06T1/00
    • Apparatus for assembling images together in which each image is defined by respective pluralities of sets of data values, each set corresponding to a group of pixels of the image, the groups being arranged in a regular array across the image whereby the sets of data values can be obtained from sets of first data each defining the color content of an image pixel in the group. The apparatus comprises a control system for determining the position of a first image relative to a second image in a desired assembled image; an assembled image store; and a modified image store. The control system is operable to convert the sets of data values of the overlapping groups of pixels defining a region of the assembled images which overlaps and which is to be retouched into the corresponding sets of first data, consolidating the converted sets of first data into an assembled set of data, modifying the assembled set of data as desired, and storing the modified, assembled data set in the modified image store. The control system also assembles the two images together and stores the assembled images in the assembled image store, regions of the assembled image corresponding to previously modified regions being defined by the respective stored, assembled data set in the modified image store.
    • 用于将图像组合在一起的装置,其中每个图像由相应的多组数据值定义,每组数据值对应于图像的一组像素,这些组以跨越图像的规则阵列排列,从而数据值集可以 从每组定义组中的图像像素的颜色内容的第一数据组获得。 该装置包括用于在所需组合图像中确定第一图像相对于第二图像的位置的控制系统; 组装图像存储; 和修改后的图像存储。 控制系统可操作以将重叠的组合图像的区域的重叠组的像素组的数据值转换成相应的第一数据集合,将转换后的第一数据集合到 组装的数据集合,根据需要修改组合的数据集合,并将经修改的组合数据集存储在修改后的图像存储器中。 控制系统还将两个图像组装在一起并将组装的图像存储在组装的图像存储器中,对应于先前修改的区域的组装图像的区域由修改后的图像存储器中的相应存储的组合数据集定义。
    • 10. 发明授权
    • Reproduction of colored images
    • 复制彩色图像
    • US4613897A
    • 1986-09-23
    • US785377
    • 1985-10-08
    • Peter W. Stansfield
    • Peter W. Stansfield
    • H04N1/60G03F3/08H04N1/46H04N1/54
    • H04N1/54
    • In color printing, it is customary to analyze the color content of an original using red, blue and green filters and to make color-component printers for the complementary colors, i.e. cyan, magenta, and yellow, with or without a black printer. The present invention concerns the preparation of a special color printer for a printing ink the color of which is not complementary to one of the said filters, for example a brown separation. According to the invention, sets of values (Ybr, Mbr, Cbr) defining the characteristic elements of curves for yellow, magenta and cyan, which curves together correspond to a range of values for the required color separation, are stored. For each picture element, a combination of color-component values for yellow, magenta and cyan (Y, M, C), are derived and are compared with different sets of values (Ybr, Mbr, Cbr) derived from the stored curve elements, each set corresponding to a different value of the required special-color separation (Br). A value is selected for the desired special-color separation for which each of the stored values of the related set (Ybr, Mbr, Cbr) is not greater than the corresponding value (Y, M, C) derived from the picture element of the original. When, in addition to the color-component signals derived for a picture element of the original, a black signal is also derived, the stored curve-representing values for the special-color separation may include values defining a curve for black.
    • 在彩色打印中,通常使用红色,蓝色和绿色滤光片来分析原稿的颜色内容,并使用或不使用黑色打印机,使色彩分量打印机成为互补色,即青色,品红色和黄色。 本发明涉及一种用于印刷油墨的特殊彩色打印机的准备,其颜色与所述过滤器之一不互补,例如褐色分离。 根据本发明,存储了对应于所需颜色分离的值的范围的,将一起曲线的黄色,品红色和青色的曲线的特征元素的值(Ybr,Mbr,Cbr)组合。 对于每个像素,导出用于黄色,品红色和青色(Y,M,C)的颜色分量值的组合,并将其与从存储的曲线元素导出的不同的值组(Ybr,Mbr,Cbr)进行比较, 每个集合对应于所需特殊颜色分离(Br)的不同值。 选择对于相关组(Ybr,Mbr,Cbr)的每个存储值不大于从图像元素导出的相应值(Y,M,C)的期望的特殊颜色分离的值 原版的。 当除了为原始图像的元素导出的颜色分量信号之外,还导出黑色信号时,存储的特殊颜色分离的曲线表示值可以包括定义黑色曲线的值。