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New low-pass split wavelet pyramids and their application to efficient zerotree coding of medical images

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2 Author(s)
Zador, A. ; Finlin Technol. Ltd., Waterloo, Ont., Canada ; Kustov, V.

We have developed and tested alternative transforms which create different zerotree structures. These new transforms can significantly improve the performance of image compression algorithms that use zerotrees without a significant modification of the latter. A new wavelet pyramid that results in an effective non-integer up- and down-sampling of the high-frequency sub-bands is presented in this paper. Non-integer sub-sampled pyramids can also be used to reduce the data dependency in the compression algorithm, and therefore reduce the execution time in a processor with multiple parallel processing units

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Computer-Based Medical Systems, 2001. CBMS 2001. Proceedings. 14th IEEE Symposium on

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