Invention Grant
US08351501B2 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
用于图像信息编码的方法和装置，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): 用于图像信息编码的方法和装置，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.: US13370174Application Date: 2012-02-09
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Publication No.: US08351501B2Publication Date: 2013-01-08
- 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 decoding method is for decoding a bit stream in an image decoding apparatus. The method includes receiving the bit stream and a weight parameter that is added to a luma quantization parameter by an addition operation. The method also includes decoding, in a decoding unit in the image decoding apparatus, the bit stream and generating a chroma component of quantized coefficients. In addition, the method includes performing, in a dequantization unit in the image decoding apparatus, dequantization on the chroma component of quantized coefficients using the chroma quantization parameter calculated on the basis of a luma quantization parameter weighted by the weight parameter.
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