发明名称 |
METHOD AND DEVICE FOR ESTIMATING NOISE IN A RECONSTRUCTED IMAGE |
摘要 |
A method for estimating noise in a reconstructed image through post-processing includes the steps: dividing the reconstructed image to generate image segments; applying a multi-resolution transformation or directional filter bank on at least part of the image segments to generate transformed image segments; and for each transformed image segment estimating a direction dependent noise power S0(&thetas;); calculating a first noise covariance matrix from an isotropic power spectral density |ω∥G(ω)|2; and calculating a second noise covariance matrix in the transformed image segment through the product of the direction dependent noise power S0(&thetas;) and the first noise covariance matrix.
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申请公布号 |
US2013051674(A1) |
申请公布日期 |
2013.02.28 |
申请号 |
US201113696503 |
申请日期 |
2011.05.06 |
申请人 |
GOOSSENS BART;PIZURICA ALEKSANDRA;PHILIPS WILFRIED |
发明人 |
GOOSSENS BART;PIZURICA ALEKSANDRA;PHILIPS WILFRIED |
分类号 |
G06K9/40 |
主分类号 |
G06K9/40 |
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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