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首页> 外国专利> METHOD FOR ENCODING A MATRIX IN PARTICULAR A MATRIX REPRESENTATIVE OF A STILL OR VIDEO IMAGE USING A WAVELET TRANSFORM WITH NUMBERS OF WAVELET LEVELS THAT VARY ACCORDING TO THE IMAGE AND DIFFERENT QUANTIZATION FACTORS FOR EACH WAVELET LEVEL

METHOD FOR ENCODING A MATRIX IN PARTICULAR A MATRIX REPRESENTATIVE OF A STILL OR VIDEO IMAGE USING A WAVELET TRANSFORM WITH NUMBERS OF WAVELET LEVELS THAT VARY ACCORDING TO THE IMAGE AND DIFFERENT QUANTIZATION FACTORS FOR EACH WAVELET LEVEL

机译：用小波变换对静止或视频图像的特定矩阵表示进行编码的方法，该小波变换具有随每个小波级别的图像和不同量化因子而变化的小波级数

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The invention relates to an encoding method for encoding successive layers of an initial matrix into a compressed matrix and restoring it as a restored matrix each cell of the initial matrix containing a respective initial numerical value; each cell of the compressed matrix containing a respective compressed numerical value corresponding to the respective initial numerical value; each cell of the restored matrix containing a respective restored numerical value corresponding to the respective initial numerical value; characterised in that to encode one applies: wavelet transforms applied to the entire matrix over a limited number of levels such that a residual level remains with dimensions larger than or equal to 2x2; then a differential encoding of the residual level i.e. a compression of the residual level by obtaining differences with each of the values of the residual level.
机译：本发明涉及一种编码方法，用于将初始矩阵的连续层编码为压缩矩阵，并将其恢复为恢复矩阵，该初始矩阵的每个单元格都包含各自的初始数值;压缩矩阵的每个单元格包含对应于各自初始数值的各自压缩数值;恢复矩阵的每个单元格包含对应于各自初始数值的各自恢复数值;其特征在于对一种编码进行应用：在有限数量的级别上将小波变换应用于整个矩阵，以使得残留级别保持大于或等于2x2的尺寸。然后，通过获得与残差电平的每个值的差，对残差电平进行差分编码，即对残差电平进行压缩。

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