Invention Grant
US08509551B2 Image encoder and image decoder, image encoding method and image decoding method, image encoding program and image decoding program, and computer readable recording medium recording with image encoding program and computer readable recording medium recorded with image decoding program
有权
图像编码器和图像解码器，图像编码方法和图像解码方法，图像编码程序和图像解码程序，以及记录有图像编码程序的计算机可读记录介质和记录有图像解码程序的计算机可读记录介质
- Patent Title: Image encoder and image decoder, image encoding method and image decoding method, image encoding program and image decoding program, and computer readable recording medium recording with image encoding program and computer readable recording medium recorded with image decoding program
- Patent Title (中): 图像编码器和图像解码器，图像编码方法和图像解码方法，图像编码程序和图像解码程序，以及记录有图像编码程序的计算机可读记录介质和记录有图像解码程序的计算机可读记录介质
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Application No.: US11980460Application Date: 2007-10-31
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Publication No.: US08509551B2Publication Date: 2013-08-13
- Inventor: Yoshimi Moriya , Shunichi Sekiguchi , Kazuo Sugimoto , Yoshihisa Yamada , Koutarou Asai , Tokumichi Murakami , Yuichi Idehara
- Applicant: Yoshimi Moriya , Shunichi Sekiguchi , Kazuo Sugimoto , Yoshihisa Yamada , Koutarou Asai , Tokumichi Murakami , Yuichi Idehara
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP.
- Priority: JP2005-212601 20050722; JP2005-294767 20051007; JP2005-294768 20051007; JP2005-377638 20051228; JP2006-085210 20060327
- Main IPC: G06K9/46
- IPC: G06K9/46
Abstract:
An image encoder including: a predicted-image generating unit that generates a predicted image in accordance with a plurality of prediction modes indicating predicted-image generating methods; a prediction-mode judging unit that evaluates prediction efficiency of a predicted image outputted from the predicted-image generating unit to judge a predetermined prediction mode; and an encoding unit that subjects an output of the prediction-mode judging unit to variable-length encoding. The prediction-mode judging unit judges, on the basis of a predetermined control signal, which one of a common prediction mode and a separate prediction mode is used for respective color components forming the input image signal, and multiplexes information on the control signal on a bit stream, multiplexes, when the common prediction mode is used, common prediction mode information on the bit stream, and multiplexes, when the common prediction mode is not used, prediction mode information for each of the color components on the bit stream.
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