A Wavelet Image Compression Scheme using PVQ
This work presents an application of Pyramid Vector Quantization (PVQ), with a global bit allocation on wavelet coefficients. First a two level bit-allocation strategy has been used: the available bit-rate is subdivided on the sub-images, and then for each sub-image an allocation strategy is used to distridute the available bits through the vectors to quantize. Sucessively a one-level bit allocation strategy (global bit-allocation) over all vectors of all sub-images has been considered. Simulations carried out on several test images give good subjective and objective results compared to other wavelet-based coding techniques already proposed in literature.
- Published
- 1996-10
- Content type
- Original Research
- DOI
- 10.5594/M001258
- ISBN
- 978-1-61482-947-8
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