Victor F. Sanchez

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A method is proposed to encode multiple regions of interest in the JPEG2000 image-coding framework. The algorithm is based on the rearrangement of packets in the code-stream to place the regions of interest before the background coefficients. In order to improve the quality of the reconstructed image, partial background information is included with the(More)
In this paper, we present a technique to robustly transmit regions of interest in the JPEG2000 framework. The technique assumes a prioritized region-of-interest coding and optimally assigns channel protection to the coded data according to the importance of every packet in the final bit-stream. The mean energy of the transform coefficients contained in a(More)
An adaptive unequal channel protection technique is proposed for JPEG2000 images by exploiting the hierarchical structure of the bit-stream. The proposed technique takes into account the effect of channel errors in different packets of the bit-stream in order to optimally protect the coded data. For a given transmission bandwidth and multi-layered JPEG2000(More)
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