CVPR
2008
IEEE
14 years 5 months ago
2008
IEEE
In this paper, we present a novel single-image vignetting method based on the symmetric distribution of the radial gradient (RG). The radial gradient is the image gradient along t...
CVPR
2010
IEEE
15 years 6 days ago
2010
IEEE
We propose a new scheme to estimate image bias field through introducing two sparsity constraints. One is that the bias-free image has concise representation with image gradients o...