Editing Soft Shadows in a Digital Photograph
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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.
[1] 23 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.
[1] 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.
[2] A. Agrawal, R. Raskar, and R. Chellappa, "Edge Suppression by Gradient Field Transformation Using Cross-Projection Tensors," Proc. IEEE Computer Society Conf. Computer Vision and Pattern Recognition (CVPR), IEEE CS Press, 2006, pp. 2301–2308.
[3] J. Elder and R. Goldberg, "Image Editing in the Contour Domain," IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 23, no. 3, 2001, pp. 291–296.
[4] Y.Y. Chuang et al., "Shadow Matting and Compositing," ACM Trans. Graphics, vol. 22, no. 3, 2003, pp. 494–500.
[5] Y. Weiss, "Deriving Intrinsic Images from Image Sequences," Proc. Int'l Conf. Computer Vision (ICCV), IEEE Press, 2001, pp. 68–75.
[6] P. Sen, "Silhouette Maps for Improved Texture Magnification," Proc. ACM Siggraph/Eurographics Conf. Graphics Hardware, ACM Press, 2004, pp. 65–73.
[7] J. Tumblin and P. Choudhury, "Bixels: Picture Samples with Sharp Embedded Boundaries," Eurographics Symp. Rendering (EGSR), Eurographics Association, 2004, pp. 255–264.
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, Mar./Apr. 2007, doi:10.1109/MCG.2007.30
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