发明名称 |
RATE DISTORTION OPTIMIZATION FOR VIDEO DENOISING |
摘要 |
Based on maximum a posteriori (MAP) estimates, video denoising techniques for frames of noisy video are provided. With the assumptions that noise is similar to or satisfies Gaussian distribution and an a priori conditional density model measurable by bit rate, a MAP estimate of a denoised current frame can be expressed as a rate distortion optimization problem. A constraint minimization problem based on the rate distortion optimization problem is used to vary a lagrangian parameter to optimize the denoising process. The lagrangian parameter is determined as a function of distortion of the noise.
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申请公布号 |
US2008316364(A1) |
申请公布日期 |
2008.12.25 |
申请号 |
US20080132769 |
申请日期 |
2008.06.04 |
申请人 |
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY |
发明人 |
AU OSCAR CHI LIM;CHEN YAN |
分类号 |
H04N5/00 |
主分类号 |
H04N5/00 |
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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