quantization parameter造句
例句与造句
- in conventional r-d analysis, the bitrate r and distortion d are considered as function of quantization parameter q, which are usually developed in pixel-domain or spatial domain
在传统r-d模型中，码率r和失真d都看成量化步长的函数，而且失真评价函数一般在象素域或空域中进行。 - 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。 - in packet based wireless video communications, when best band distribution, not only source distortion should be considered, but also channel distortion caused by channel errors . the existing macroblock-layer rate control schemes calculates quantization parameters of all macroblocks ( mb ) in a frame in a raster scan order, and then encodes the mbs in the same order . actually, the quantization distortion is heavily dependent upon the coding order of mbs
在基于包的无线视频传输中，最佳带宽分配时，不仅要考虑信源编码失真，也要考虑由于信道差错引起的信道失真；已有的宏块层码率控制算法以矩阵扫描的顺序计算一帧中所有宏块的量化参数，事实上量化失真与宏块的编码顺序有很大关系，改变宏块的编码顺序，使复杂的宏块分配到更多的比特数，显然能大大提高编码效率。 - It's difficult to find quantization parameter in a sentence. 用quantization parameter造句挺难的