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3 June 1997 Region-based DCT image coding scheme
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Proceedings Volume 3016, Human Vision and Electronic Imaging II; (1997)
Event: Electronic Imaging '97, 1997, San Jose, CA, United States
This paper describes an attempt to broaden the scope of conventional block-based DCT image coding, by allowing some variation in quantization of DCT values for different blocks in the image. Blocks belonging to each individual spatial region in the image are afforded a particular level of quantization selected for that region. This approach allows desirable levels of compression efficiency and visual quality to be achieved for different parts of the reconstructed image. The scheme offers improved overall balancing of fidelity performance, as well as benefits for applications which undertake further processing using the image regions, such as video coding.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Anthony John Maeder and Matthew S. Baker "Region-based DCT image coding scheme", Proc. SPIE 3016, Human Vision and Electronic Imaging II, (3 June 1997);

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