Image Processing (Session 6)
Efficient Shadow Removal Using Subregion Matching Illumination Transfer
Article first published online: 25 NOV 2013
© 2013 The Author(s) Computer Graphics Forum © 2013 The Eurographics Association and John Wiley & Sons Ltd.
Computer Graphics Forum
Volume 32, Issue 7, pages 421–430, October 2013
How to Cite
Xiao, C., Xiao, D., Zhang, L. and Chen, L. (2013), Efficient Shadow Removal Using Subregion Matching Illumination Transfer. Computer Graphics Forum, 32: 421–430. doi: 10.1111/cgf.12250
- Issue published online: 25 NOV 2013
- Article first published online: 25 NOV 2013
- I.3.3 [Computer Graphics]: Picture/Image Generation—Line and curve generation
This paper proposes a new shadow removal approach for input single natural image by using subregion matching illumination transfer We first propose an effective and automatic shadow detection algorithm incorporating global successive thresholding scheme and local boundary refinement. Then we present a novel shadow removal algorithm by performing illumination transfer on the matched subregion pairs between the shadow regions and non-shadow regions, and this method can process complex images with different kinds of shadowed texture regions and illumination conditions. In addition, we develop an efficient shadow boundary processing method by using alpha matte interpolation, which produces seamless transition between the shadow and non-shadow regions. Experimental results demonstrate the capabilities of our algorithm in both the shadow removal quality and performance.