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Issue No.02 - March/April (2007 vol.27)
pp: 23-31
Ankit Mohan , Northwestern University
Jack Tumblin , Northwestern University
Prasun Choudhury , Adobe Systems
ABSTRACT
This technique for modeling, editing, and rendering shadow edges in a photograph or a synthetic image lets users separate the shadow from the rest of the image and make arbitrary adjustments to its position, sharpness, and intensity.
INDEX TERMS
shadow editing, edges, discontinuities, sharpness, gradient domain, Poisson solver
CITATION
Ankit Mohan, Jack Tumblin, Prasun Choudhury, "Editing Soft Shadows in a Digital Photograph", IEEE Computer Graphics and Applications, vol.27, no. 2, pp. 23-31, March/April 2007, doi:10.1109/MCG.2007.30
REFERENCES
1. H.G. Barrow and J.M. Tenenbaum, "Recovering Intrinsic Scene Characteristics from Images," Computer Vision Systems, Academic Press, 1978, pp. 3–26.
2. Y.Y. Chuang et al., "Shadow Matting and Compositing," ACM Trans. Graphics, vol. 22, no. 3, 2003, pp. 494–500.
3. J. Elder, "Are Edges Incomplete?" Int'l J. Computer Vision, vol. 34, nos. 2/3, 1999, pp. 97–122.
4. R. Fattal, D. Lischinski, and M. Werman, "Gradient Domain High Dynamic Range Compression," ACM Trans. Computer Graphics, vol. 21, no. 3, 2002, pp. 249–256.
5. P. Perez, M. Gangnet, and A. Blake, "Poisson Image Editing," ACM Trans. Computer Graphics, vol. 22, no. 3, 2003, pp. 313–318.
6. G.D. Finlayson et al., "On the Removal of Shadows from Images," IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 28, no. 1, 2006, pp. 59–68.
7. T. Georgiev, "Covariant Derivatives and Vision," Proc. 9th European Conf. Computer Vision, Part IV, LNCS 3954, Springer, 2006, pp. 56–69.
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