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Image encoding method and an image encoder wherein a one- dimensional signal having the fastest energy conversion rate is selected and outputted as a coded signal
Image encoding method and an image encoder wherein a one- dimensional signal having the fastest energy conversion rate is selected and outputted as a coded signal
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机译:图像编码方法和图像编码器,其中具有最快能量转换率的一维信号被选择并输出为编码信号
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摘要
An image signal is transformed by at least two different mathematical transformations to obtain at least two different transformed signals. A selected one of the transformed signals is quantized and coded, the selection being made so as to minimize the size of the coded data. The selection is made by comparing the energy convergence rates of the transformed signals, or by quantizing all of the transformed signals and comparing the amounts of non-zero quantized data, or by quantizing and coding all of the transformed signals and comparing the coded data sizes directly.
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