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2. 发明授权

US5929837A Method and apparatus for determining representative chrominance components 失效
标题翻译：用于确定代表性色度分量的方法和装置
公开(公告)号：US5929837A
公开(公告)日：1999-07-27
申请号：US107579
申请日：1998-03-02
申请人： Vernon Dennis Hasz , Karl Scott Mills , Richard Charles Andrew Owen , Mark Emil Bonnelycke
发明人： Vernon Dennis Hasz , Karl Scott Mills , Richard Charles Andrew Owen , Mark Emil Bonnelycke
IPC分类号： H04N1/393 , G06T3/40 , G09G5/02 , G09G5/36 , G09G5/39 , H04N9/64 , G09G5/00 , G09G5/04
CPC分类号： G06T3/4007 , G09G5/02 , H04N9/641 , G09G2340/0407
摘要： A method and apparatus for determining representative values for the chrominance components to be associated with a plurality of luminance components in a horizontally shrunken or stretched image for graphics controllers wherein display image data is stored in a buffer memory in a form associating a single set of U and V chrominance components with a plurality of Y luminance values. For a four to one shrinkage of an image in a format associating one set of chrominance components with four pixel luminance values wherein each pixel luminance value in the shrunken image initially has as associated set of chrominance components U.sub.0, U.sub.1, U.sub.2 and U.sub.3 and V.sub.0, V.sub.1, V.sub.2 and V.sub.3, the multiple values of the chrominance components are sequentially accumulated in a 3/4:1/4 ratio in such a manner as to provide an approximate average value for U and V for each set of four pixel luminance values in the shrunken image. Circuitry for processing the chrominance components making use of interpolation circuitry already used for interpolation between pixels for a stretched image is disclosed.
摘要翻译：一种用于确定与图形控制器的水平缩小或拉伸图像中的多个亮度分量相关联的色度分量的代表值的方法和装置，其中显示图像数据以与U单个组合相关联的形式存储在缓冲存储器中和具有多个Y亮度值的V色度分量。对于将一组色度分量与四个像素亮度值相关联的格式的四到一缩小，其中收缩图像中的每个像素亮度值最初具有相关的色度分量U0，U1，U2和U3和V0的集合， V1，V2和V3中，以+ E，fra 3/4 + EE：+ E，fra 1/4 + EE比率顺序地累积色度分量的多个值，以提供近似平均值 U和V对于收缩图像中的每组四个像素亮度值。公开了用于处理使用已经用于拉伸图像的像素之间的插值的插值电路的色度分量的电路。

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