Jh. Kim et Wj. Song, PYRAMID-STRUCTURED PROGRESSIVE IMAGE TRANSMISSION USING QUANTIZATION-ERROR DELIVERY IN TRANSFORM DOMAINS, IEE proceedings. Vision, image and signal processing, 143(2), 1996, pp. 132-136
The authors propose a pyramid-structured progressive image transmissio
n scheme in which quantisation error delivery is applied to the transf
orm coefficients of the images represented by the pyramid. Quantisatio
n 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 pyr
amid-structured progressive image transmission. When the images repres
ented by the pyramid are compressed by the transform and the quantisat
ion is applied to the transform coefficients, however, the existing ap
proach in the literature requires the inverse transform of the quantis
ation error, which is a computational overhead. To remove this drawbac
k, the authors propose a new method to accomplish quantisation error d
elivery directly in the transform domain. Using the proposed method, t
he quantisation error at the transform coefficient of each level can b
e 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 pyrami
d.