Then the integer implementation of 4D-MDCT is applied to video sequences and the integer transform coefficients are quantized by vector quantizer based on robust statistic.

• 根据可逆整型变换矩阵分解的原理，首先计算四维矩阵离散余弦浮点变换的整数可逆分解，得到整数到整数的可逆变换矩阵。