发明名称 |
IMAGE ENCODING AND DECODING APPARATUSES, IMAGE ENCODING AND DECODING METHODS, PROGRAMS THEREOF, AND RECORDING MEDIA RECORDED WITH THE PROGRAMS |
摘要 |
A method for encoding an image using an intraframe prediction is provided which includes selecting a gradient of a pixel value that is indicated by an image signal to be predicted among a plurality of gradient candidates, generating a predicted signal by applying a gradient in accordance with the distance from a prediction reference pixel based on the gradient, intraframe-encoding the image signal to be predicted based on the predicted signal, and encoding information indicating the size of the selected gradient. Alternatively, the method includes estimating the gradient of a pixel value that is indicated by an image signal to be predicted based on an image signal which has already been encoded, generating a predicted signal by applying a gradient in accordance with the distance from a prediction reference pixel based on the gradient, and intraframe-encoding the image signal to be predicted based on the predicted signal.
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申请公布号 |
US2010208803(A1) |
申请公布日期 |
2010.08.19 |
申请号 |
US20080682035 |
申请日期 |
2008.10.14 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
MATSUO SHOHEI;TAKAMURA SEISHI;KAMIKURA KAZUTO;YASHIMA YOSHIYUKI |
分类号 |
H04N7/32 |
主分类号 |
H04N7/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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