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Image Processing: Algorithms and Systems, Neural Networks, and Machine Learning
The shape-adaptive DCT (SA-DCT) can be computed on a support of arbitrary shape, but retains a computational complexity comparable to that of the usual separable block DCT. Despite the near-optimal decorrelation and energy compaction properties, application of the SA-DCT has been rather limited, targeted nearly exclusively to video compression. It has been recently proposed by the authors 8 to employ the SA-DCT for still image denoising. We use the SA-DCT in conjunction with the directionaldoi:10.1117/12.642839 fatcat:vpv7brqesrfxlocea23lpl7rzy