Pyramid-structured progressive image transmission using quantisation error delivery in transform domains
Jihun Kim, Woo‐Jin Song · IEE Proceedings - Vision Image and Signal Processing · 1996
The authors propose a pyramid-structured progressive image transmission scheme in which quantisation error delivery is applied to the transform coefficients of the images represented by the pyramid. Quantisation error delivery makes it possible to reprocess at the lower level the information lost at each level of the pyramid. This is one important method for achieving lossless reproduction of an original image in pyramid-structured progressive image transmission. When the images represented by the pyramid are compressed by the transform and the quantisation is applied to the transform coefficients, however, the existing approach in the literature requires the inverse transform of the quantisation error, which is a computational overhead. To remove this drawback, the authors propose a new method to accomplish quantisation error delivery directly in the transform domain. Using the proposed method, the quantisation error at the transform coefficient of each level can be delivered and incorporated in the transform coefficient of the lower level. The simulation results show that the proposed method also has excellent coding performance for the intermediate levels of the pyramid.