标准摘要
[中文适用范围]: ISO/IEC 23002 的这一部分指定了整数输出 8x8 IDCT 的特定实现,该实现完全符合 ISO/IEC 23002-1 中指定的精度要求(参见参考文献中的参考文献 [7]),并且另外满足或超过所有要求许多国际视频编码标准中对 IDCT 精度规定的精度要求(参见参考文献中的参考文献[2]至[6])。 它还提供基于相同因式分解结构的整数输出 8x8 前向 DCT 的(非规范)规范。 [外文原描述]: ISO/IEC 23002-2:2008 specifies a particular implementation of an integer-output 8x8 inverse discrete cosine transform (IDCT) that fully conforms to the accuracy requirements specified in ISO/IEC 23002-1 and additionally meets or exceeds all accuracy requirements specified for IDCT precision in a number of international video coding standards. It additionally provides a (non-normative) specification of an integer-output 8x8 forward DCT based on the same factorization structure.
英文名称Information technology - MPEG video technologies - Part 2: Fixed-point 8x8 inverse discrete cosine transform and discrete cosine transform