比特率压缩 meaning in Chinese
brr bit rate reduction
Examples
- Brr bit rate reduction
比特率压缩 - A new bit rate control strategy with both global pre - allocation and local segmentation ( glas ) for low bit rate application is proposed . first , it allots bit date to every frame in advance according to possessive rate of buffer , and then distribute different quantization parameters according conctete detail . by means of this method , buffer is controlled more particularly . and the quality of decoded image is improved , the traditional video image coding method , that is to say , the intraframe coding based on dct and the interframe prediction coding based on motion compensation , is not suitable for low bit rate compression and aside from this , the encoder is too complicated
它首先在总体上根据缓存器的占有率给每帧预分配比特数，然后再根据具体细节给予不同的量化参数。使缓存器得到了更细致的控制，解码图像的质量有所改善。针对传统的视频图像编码方法，即帧内基于dct的编码加帧间基于运动补偿的预测编码存在不适于低比特率压缩，编码器复杂等不足，讨论了基于3 - ddct的xyz视频图像压缩编码方法，提出了3 - ddct系数的三维“ z ”形扫描方案，大大提高了编码效率。