舍入精度 meaning in English

round-off accuracy

As the bases of the proposed transform coefficients are very close , the transform normalization can be implemented only on the encoder side and the dequantization table size can be reduced compared with the transform used in h . 264 mpeg - 4 avc . along with the feature of the proposed transform , adaptive dead - zone quantization optimization for the proposed transform is studied
Dct变换具有很好的能量集中特性，并且实现简单，早已被广泛地应用到各种类型的编码标准中，如mpeg - 1 ， mpeg - 2 ， mpeg - 4 ， h . 263等，但浮点dct变换由于浮点舍入精度的问题会产生编解码失配。