A hierarchical coder (HC) is constructed from a number of simple coders for image blocks arranged in order of increasing bit rate and reproduction quality. This paper discusses several aspects of hierarchical coders, including: a general description of the structure of a HC, its advantages and important design considerations, a discussion of how threshold selection can affect the performance of the coder through a simple example, and an introduction of a simple procedure for selecting optimal (in the rate distortion sense) decision thresholds which control the levels of the hierarchy.<>
Optimal threshold selection in hierarchical coders for images and video
Proceedings of 1st International Conference on Image Processing ; 3 ; 884-888 vol.3
1994-01-01
407834 byte
Conference paper
Electronic Resource
English
Optimal Threshold Selection in Hierarchical Coders for Images and Video
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