Invention Grant
- Patent Title: Storing high dynamic range data in a low dynamic range format
- Patent Title (中): 以低动态范围格式存储高动态范围数据
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Application No.: US11254385Application Date: 2005-10-20
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Publication No.: US07932914B1Publication Date: 2011-04-26
- Inventor: Ryan M. Geiss , Mehmet Cem Cebenoyan
- Applicant: Ryan M. Geiss , Mehmet Cem Cebenoyan
- Applicant Address: US CA Santa Clara
- Assignee: NVIDIA Corporation
- Current Assignee: NVIDIA Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Patterson & Sheridan, LLP
- Main IPC: G09G5/00
- IPC: G09G5/00

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.
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