Fang Shuai, Yang Jingrong, Cao Yang, Wu Pengfei, Rao Ruizhong. Local multi-scale Retinex algorithm based on guided image filtering[J]. Journal of Image and Graphics, 2012, 17(7): 748-755. DOI: 10.11834/jig.20120702.
Local multi-scale Retinex algorithm based on guided image filtering
Retinex algorithm deals with the removal of unfavorable illumination effects from a given image.Solving it is typically done by introducing a regularization that forces a spatial smoothness on the illumination
which is computational expensive.In this paper we propose a non-iterative retinex algorithm based on a recent"guided image filter".Assuming a spatial smoothness on the reflectance
a method using two guided image filters is applied to eliminate artifacts caused by noise.Then
a multi-resolution framework combining guided image filtering and wavelet thresholding
is presented.Our framework is very effective in achieving a trade-off between detail enhancement and color constancy.Compared to other enhancement algorithms
our results verify the new approach's efficiency in eliminating artifacts caused by noise