US 10,297,008 B2 | METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION

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US 10,297,008 B2

METHOD AND SYSTEM FOR IMPROVING COMPRESSED IMAGE CHROMA INFORMATION

Tech Center:

2400 Networking, Multiplexing, Cable, and Security

Examiner:

Young Lee

Art Unit:

2485 Recording and Compression

Agent:

FISH & RICHARDSON P.C. (Dolby)

Inventors:

Gary A. Demos

Assignee:

TAGIVAN II, LLC

Priority:

12/14/11

Filed:

12/14/11

Granted:

05/21/19

Expiration:

11/07/25

Abstract

Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image.

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