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Then , the coefficients are quantized by quantization matrix. 然后对变换系数应用量化矩阵进行量化。
Step 3, a preset quantization table matrix is utilized to carry out quantization to frequency coefficient data obtained from forward discrete cosine transform; 步骤3,利用预设的量化表矩阵将正向离散余弦 转换后得到的频率系数数据进行量化处理; ip.com
This control scheme proposes a visual quantization matrix to weight the discrete cosine transform (DCT) coefficients in order to reduce the coding distortion on the visual perceptibility. 该控制策略采用一个视觉量化矩阵对DCT系数进行加权处理,以减少DCT系数在视觉特性上的编码失真。