Chu, Mengdie2017-02-282017-02-282017http://hdl.handle.net/10393/35859http://dx.doi.org/10.20381/ruor-20142This thesis proposes a novel chroma keying method based on stereo images, which can be applied to post-process the alpha matte generated by any existing matting approach. Given a pair of stereo images, a new matting Laplacian matrix is constructed based on the affinities between matching pixels and their neighbors from two frames. Based on the new matting Laplacian matrix, a new cost function is also formulated to estimate alpha values of the reference image through the propagation between stereo images.enchroma keyingalpha mattingstereo imagesThesis