Joint pre-/post-processing approach for chrominance...

Details Joint pre-/post-processing approach for chrominance... Joint pre-/post-processing approach for chrominance...

2006-12-26

2006-12-26

Tran, Trang U. (Department: 2622)

Television

Format conversion

Specified chrominance processing

C348S450000, C348S441000, C348S631000

Reexamination Certificate

active

07154557

ABSTRACT:
This invention corrects chrominance misalignment that occurs during chrominance down-sampling and up-sampling. The invention extracts a binary index from the corresponding luminance signal. The binary index enables generation of a filter window. On down-sampling the filter window is applied to a block of source chrominance pixels which are filtered or not based upon the binary index. On up-sampling the binary index of the filter window for the target chrominance pixels determines which are filtered or not.

REFERENCES:
patent: 5341442 (1994-08-01), Barrett
patent: 5712687 (1998-01-01), Naveen et al.
patent: 6583824 (2003-06-01), Cacciatore et al.
patent: 6788347 (2004-09-01), Kim et al.
patent: 7002627 (2006-02-01), Raffy et al.

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