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+# Computer Vision based Alpha Matting
+
+![Trimap Alphamat Example from Askoy et al 2017](https://github.com/opencv/opencv_contrib/assets/810997/5cafae51-18e1-4e75-9035-6b40c9a064cb)
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+
+
+This project was part of the Google Summer of Code 2019.
+
+#### Student: Muskaan Kularia
+#### Mentor: Sunita Nayak
+
+***
+Alphamatting is the problem of extracting the foreground from an image. Given the input of an image and its corresponding trimap, we try to extract the foreground from the background.
+
+This project is implementation of "[Designing Effective Inter-Pixel Information Flow for Natural Image Matting](https://www.researchgate.net/publication/318489370_Designing_Effective_Inter-Pixel_Information_Flow_for_Natural_Image_Matting)" by Yağız Aksoy, Tunç Ozan Aydın and Marc Pollefeys[1]. It required implementation of parts of other papers [2,3,4].
+
+
+## References
+
+[1] Yagiz Aksoy, Tunc Ozan Aydin, Marc Pollefeys, "[Designing Effective Inter-Pixel Information Flow for Natural Image Matting](https://www.researchgate.net/publication/318489370_Designing_Effective_Inter-Pixel_Information_Flow_for_Natural_Image_Matting)", CVPR, 2017.
+
+[2] Roweis, Sam T., and Lawrence K. Saul. "[Nonlinear dimensionality reduction by locally linear embedding](https://science.sciencemag.org/content/290/5500/2323)" Science 290.5500 (2000): 2323-2326.
+
+[3] Anat Levin, Dani Lischinski, Yair Weiss, "[A Closed Form Solution to Natural Image Matting](https://www.researchgate.net/publication/5764820_A_Closed-Form_Solution_to_Natural_Image_Matting)", IEEE TPAMI, 2008.
+
+[4] Qifeng Chen, Dingzeyu Li, Chi-Keung Tang, "[KNN Matting](http://dingzeyu.li/files/knn-matting-tpami.pdf)", IEEE TPAMI, 2013.
+
+[5] Yagiz Aksoy, "[Affinity Based Matting Toolbox](https://github.com/yaksoy/AffinityBasedMattingToolbox)".