Improvement of the Discrete Cosine Transform calculation by means of a recursive method
Mathematical and Computer Modelling: An International Journal
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In the lossless compression of 3D medical images, a non-linear approach is required to exploit the interframe redundancies. Even an optimal 3D linear predictor does not outperform the very simple 2D Lossless JPEG no. 7 predictor. However, the intraframe prediction errors from the previous frame can be used as a context in the current frame. Using this interframe context-modeling approach, a reduction of the compressed bit rate by 0.5 to 1 bit per pixel (i.e., 10-20%) could be found for both Lossless JPEG and JPEG-LS.