Optimized color space conversion

Details Optimized color space conversion Optimized color space conversion

1996-10-15

1999-07-13

Liang, Regina

Computer graphics processing and selective visual display system

Display peripheral interface input device

345199, G09G 504

Patent

active

059233168

ABSTRACT:
A method of converting video data from a YUV format to an RGB format comprising (a) performing a matrix transformation of Y, U and V pixel data of a set of possible Y, U and V parameters into corresponding R, G and B parameters, (b) determining whether the set of R, G and B parameters forms a first lookup table whose size exceeds the size of a particular memory space, (c) in the event the lookup table is too large for the memory space, truncating least significant bits of at least the U and V parameters, (d) repeating steps (a), (b) and (c) until the first lookup table fits the memory space, and then storing the first lookup table in the memory space, and (e) using the first lookup table to provide RGB pixel data using the YUV data as addresses thereto.

REFERENCES:
patent: 5506604 (1996-04-01), Nally et al.
patent: 5760762 (1998-06-01), Yamamoto
patent: 5808630 (1998-09-01), Pannel

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