Invention Grant
US08559504B2 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.: US13706981Application Date: 2012-12-06
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Publication No.: US08559504B2Publication Date: 2013-10-15
- Inventor: Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
- Applicant: Sony Corporation
- 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 apparatus for decoding a bit stream includes a receiving unit that receives the bit stream and a weight parameter that is added to a luma quantization parameter. The image decoding apparatus also includes a decoding unit that decodes the bit stream and generates a chroma component of quantized coefficients. Further, the image decoding apparatus includes a dequantization unit that performs dequantization on the chroma component of quantized coefficients using a chroma quantization parameter calculated on the basis of a luma quantization parameter weighted by the weight parameter. In addition, the image decoding apparatus includes a transform unit that performs an inverse orthogonal transform.
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