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发明授权
CN103329523B 使用经映射变换和扫描模式的视频译码 有权 复审申请

使用经映射变换和扫描模式的视频译码
摘要：
一种视频编码器可通过使用选自变换群组的变换来变换残余数据。将所述变换应用于所述残余数据以产生变换系数的二维阵列。选择扫描模式以将所述二维阵列中的所述变换系数扫描为变换系数的一维阵列。变换与扫描模式的组合可选自基于帧内预测模式的组合子集。还可基于用于产生所述二维阵列的所述变换来选择所述扫描模式。可用信号向视频解码器发出所使用的所述变换和/或扫描模式。
摘要（英）：

A video encoder may transform residual data by using a transform selected from a group of transforms. The transform is applied to the residual data to create a two-dimensional array of transform coefficients. A scanning mode is selected to scan the transform coefficients in the two-dimensional array into a one-dimensional array of transform coefficients. The combination of transform and scanning mode may be selected from a subset of combinations that is based on an intra-prediction mode. The scanning mode may also be selected based on the transform used to create the two-dimensional array. The transforms and/or scanning modes used may be signaled to a video decoder.

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