Method for deriving coding information for high resolution pictures from low resolution pictures and coding and decoding devices implementing said method
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United States of America Patent
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Jan 1, 2013
Grant Date -
Jan 29, 2009
app pub date -
Feb 14, 2006
filing date -
Feb 18, 2005
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Abstract
The invention relates to spatially scalable encoding and decoding processes using a method for deriving coding information. More particularly, it relates to a method for deriving coding information for high resolution pictures from the coding information of low resolution pictures. The method mainly comprises the following steps:
- Computing geometrical parameters characterizing the position of said high layer macroblock relatively to the corresponding base layer macroblocks and deriving from these parameters a macroblock class;Deriving a partition and possibly sub-partitions for each partition of said high layer macroblock from corresponding base layer macroblocks partition and sub-partitions on the basis of the geometrical parameters and HL MB class; andDeriving motion information for said high layer macroblock from motion information of corresponding base layer macroblocks.
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