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1. 发明授权

US4647963A Color enhancement 失效
标题翻译：颜色增强
公开(公告)号：US4647963A
公开(公告)日：1987-03-03
申请号：US773919
申请日：1985-09-09
申请人： Anthony J. Johnson , Paul E. Franklin
发明人： Anthony J. Johnson , Paul E. Franklin
IPC分类号： G03F3/08 , G09G5/02 , H04N1/46 , H04N1/60
CPC分类号： H04N1/6027
摘要： Methods of electronically enhancing one or more color components (C, Y, M) which together represent the chromatic components of a pixel of an image are described. The methods comprise subtracting from each color component respective quantities which when combined correspond to a grey level (4) to generate reduced color components. These reduced color components are then multiplied by a factor and the modified reduced color components are then added back to the subtracted quantities or to the original color components to generate enhanced color components (13,14), whereby the factor is chosen such that the hue of the original pixel is not substantially changed after enhancement. In one method, the magnitude of the maximum reduced color component is determined and a factor is chosen which is related to the determined magnitude. In another method, the color components are ranked in order of magnitude and compared to derive two equivalent color component values. The magnitude of the maximum equivalent color component is determined and the factor chosen is related to the determined magnitude of a maximum equivalent color component.
摘要翻译：描述电子增强一个或多个颜色分量（C，Y，M）的方法，它们一起表示图像的像素的彩色分量。所述方法包括从每个颜色分量中减去相应的数量，其当组合对应于灰度级（4）以产生减少的颜色分量时。然后将这些减少的颜色分量乘以因子，然后将经修改的缩小颜色分量加回到减去的量或原始颜色分量以产生增强的颜色分量（13,14），由此选择因子使得色相的原始像素在增强后基本上不改变。在一种方法中，确定最大减少颜色分量的大小，并且选择与所确定的幅度相关的因子。在另一种方法中，颜色分量按照数量级的顺序进行排序并进行比较以得到两个等效的颜色分量值。确定最大等效颜色分量的大小，并且选择的因子与确定的最大等效颜色分量的大小有关。

2. 发明授权

US5463480A Image processor for output devices which transforms data into acceptable color space 失效
标题翻译：用于输出设备的图像处理器，可将数据转换为可接受的色彩空间
公开(公告)号：US5463480A
公开(公告)日：1995-10-31
申请号：US665123
申请日：1991-03-06
申请人： Lindsay W. MacDonald , Anthony J. Johnson , Ronnier Luo
发明人： Lindsay W. MacDonald , Anthony J. Johnson , Ronnier Luo
IPC分类号： B41J5/30 , G06T1/00 , G06T11/60 , H04N1/46 , H04N1/60 , G03F3/08
CPC分类号： H04N1/6088 , H04N1/6016 , H04N1/6055 , H04N1/6058
摘要： A method and apparatus for processing data representing an image in a first color space suitable for controlling a first image output device. The apparatus comprises a processor (11, 14, 17) for reversibly transforming the image into a perceptual color space defined by lightness, colorfulness and hue components, and for modifying the lightness, colorfulness and hue components of the image in accordance with a predetermined algorithm so that all colors in the image fall within the gamut of a second image output device; and a store for storing data defining the modified and unmodified lightness, colorfulness and hue components.
摘要翻译：一种用于处理表示适于控制第一图像输出装置的第一颜色空间中的图像的数据的方法和装置。该装置包括一个处理器（11,14,17），用于将图像可逆地转换成由亮度，色彩和色调分量所定义的感知色彩空间，并根据预定算法修改图像的亮度，色彩和色调分量使得图像中的所有颜色落入第二图像输出装置的色域内; 以及存储用于存储限定修改和未修改的亮度，色彩和色调分量的数据。

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