Object-based coding and decoding apparatuses and methods for image signals
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United States of America Patent
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Sep 16, 2008
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N/A
app pub date -
Nov 19, 1998
filing date -
Oct 26, 1995
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Expired
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Abstract
An object-based coding apparatus and method for image signals, wherein upon scanning shape-adaptive transform coefficients of an input image signal transformed in accordance with a shape-adaptive transform, only segments containing such shape-adaptive transform coefficients are scanned. In the scanning operation, segments containing no transform coefficient are skipped, thereby reducing the quantity of data being encoded. An apparatus for and a method of object-based decoding of image signals are also disclosed which can decode bit streams generated using the coding method, thereby reproducing image signals.
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