Storing high dynamic range data in a low dynamic range format

Details Storing high dynamic range data in a low dynamic range format Storing high dynamic range data in a low dynamic range format

2011-04-26

2011-04-26

Wu, Xiao M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Graphic manipulation

C345S555000, C345S614000

Reexamination Certificate

active

07932914

ABSTRACT:
Systems and methods for storing high dynamic range image data in a low dynamic range format may be used to store the high dynamic range image data in less memory. The memory bandwidth needed to access the high dynamic range data is reduced and processing performance may be improved when performance is limited by memory bandwidth. The high dynamic range image data is scaled and compressed into a low dynamic range format for storage in a render target. If the compressed high dynamic range image data contains multiple data samples per pixel, the data may be processed to produce filtered compressed high dynamic range image data with only one sample per pixel. The high dynamic range image may be reconstructed from the low dynamic range format data and further processed as high dynamic range format data for a range of applications.

REFERENCES:
patent: 6058217 (2000-05-01), Kondo
patent: 6919904 (2005-07-01), Kilgariff
patent: 7308135 (2007-12-01), Spaulding et al.
patent: 2003/0202589 (2003-10-01), Reitmeier et al.

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