Image analysis – Image compression or coding – Adaptive coding
Reexamination Certificate
2004-07-17
2009-08-25
Tran, Phuoc (Department: 2624)
Image analysis
Image compression or coding
Adaptive coding
C382S233000, C382S251000
Reexamination Certificate
active
07580584
ABSTRACT:
With adaptive multiple quantization, a video or other digital media codec can adaptively select among multiple quantizers to apply to transform coefficients based on content or bit rate constraints, so as to improve quality through rate-distortion optimization. The switch in quantizers can be signaled at the sequence level or frame level of the bitstream syntax, or can be implicitly specified in the syntax.
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Holcomb Thomas W.
Hsu Pohsiang
Lin Chih-Lung
Srinivasan Sridhar
Klarquist & Sparkman, LLP
Microsoft Corporation
Tran Phuoc
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