Invention Grant
US08270475B2 Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information
有权
用于对图像信息进行编码的方法和装置，用于对图像信息进行解码的方法和装置，用于对图像信息进行编码和解码的方法和装置，以及编码和发送图像信息的系统
- Patent Title: Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information
- Patent Title (中): 用于对图像信息进行编码的方法和装置，用于对图像信息进行解码的方法和装置，用于对图像信息进行编码和解码的方法和装置，以及编码和发送图像信息的系统
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Application No.: US13370094Application Date: 2012-02-09
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Publication No.: US08270475B2Publication Date: 2012-09-18
- Inventor: Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
- Applicant: Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt. L.L.P.
- Priority: JP2001-367868 20011130; JP2002-124641 20020425
- Main IPC: H04B1/66
- IPC: H04B1/66
Abstract:
An image encoding method for encoding an image in an image encoding apparatus. The encoding method includes: performing, in a quantization unit in the image encoding apparatus, quantization on a chroma component of transform coefficients using a chroma quantization parameter calculated on the basis of a luma quantization parameter weighted by an addition operation that adds a weight parameter; encoding, in an encoding unit in the image encoding apparatus, a chroma component of quantized coefficients and generating a bit stream; and transferring the bit stream and the weight parameter.
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