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Efficient Coding of Shape and Transparency for Video Objects
2007
IEEE Transactions on Image Processing
A novel scheme for coding gray-level alpha planes in object-based video is presented. Gray-level alpha planes convey the shape and the transparency information, which are required for smooth composition of video objects. The algorithm proposed is based on the segmentation of the alpha plane in three layers: binary shape layer, opaque layer, and intermediate layer. Thus, the latter two layers replace the single transparency layer of MPEG-4 Part 2. Different encoding schemes are specifically
doi:10.1109/tip.2007.903902
pmid:17784597
fatcat:ybbpbxcrdfgh7kqql26dmhau5m