However, available uniform 2-D mesh model enforces connec-tivity everywhere within a frame, which is clearly not suitable across occlusion boundaries. To overcome this limitation, BTBC (background to be covered) detection and MF (model failure) detection algorithms are being used. In this algorithm, connectivity of the mesh elements (patches) across covered and uncovered region boundaries are broken. This is achieved by allowing no node points within the background to be covered and refining the mesh structure within the model failure region at each frame. We modify the occlusion-adaptive, content-based mesh design and forward tracking algorithm used by Yucel Altunbasak for selection of points for triangular 2-D mesh design. Then, we propose a new triangulation procedure for mesh structure and also a new algorithm to justify connectivity of mesh structure after motion vector estimation of the mesh points. The modified content-based mesh is adaptive which eliminates the necessity of transmission of all node locations at each frame. Nandhahumar， “Computation of Motion from Sequences of Images,” Proceeding of the IEEE, Vol. Grallert, “Advances in Picture Coding,” Proceeing of the IEEE, Vol. Konrad, “Estimating Motion in Image Sequences,” IEEE Signal Processing Magazine, Vol. Zhang, “Video Processing and Communications,” Chapter 1, Prentice Hall, New Jersey, 2002. Nagel, “Displacement Vectors Derived from Second-Order Intensity Variations in Images Sequences,” Computer Graphics and Image Processing, Vol. Aggarwal, “Experiments in Computing Optical Flow with Gradient-Based, Multiconstraint Method,” Pattern Recognition, Vol. Lee, “The Facet Approach to Optical Flow,” Image Understanding Workshop, 1993. Lee, “Region Segmentation Based on Active Mesh Representation of Motion,” IEEE International Conference on Image Processing, 1995, pp. Girod, “Motion Compensation: Visual Aspects, Accuracy, and Fundamental Limits,” Motion Analysis and Image Sequence Processing, 1993, pp. Haggag, “Adaptive Motion Estimation Block Matching Algorithms for Video Coding,” International Symposium on Intelligent signal Processing and Communication, IEEE, Vol. Murat Tekalp, “Occlusion-ADAPTIVE, Content-Based Mesh Design and Forward Tracking,” IEEE, Transaction on Image Processing, Vol. Murat Tekalp, “Occlusion-Adaptive 2-D Mesh Tracking,” IEEE, Vol.
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