Graphical Models and Image Processing
The Quadtree and Related Hierarchical Data Structures
ACM Computing Surveys (CSUR)
A new frame interpolation scheme for talking head sequences
ICIP '95 Proceedings of the 1995 International Conference on Image Processing (Vol.2)-Volume 2 - Volume 2
Digital Image Processing (3rd Edition)
Digital Image Processing (3rd Edition)
Optimal warping prediction for video coding
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 04
Multiresolution motion estimation for low-rate video frame interpolation
EURASIP Journal on Applied Signal Processing
Progressive-scan rate up-conversion of 24/30 Hz source materials for HDTV
IEEE Transactions on Consumer Electronics
Adaptive motion estimation technique for motion compensated interframe interpolation
IEEE Transactions on Consumer Electronics
A new video interpolation technique based on motion-adaptive subsampling
IEEE Transactions on Consumer Electronics
New frame rate up-conversion using bi-directional motion estimation
IEEE Transactions on Consumer Electronics
Closed-form connectivity-preserving solutions for motion compensation using 2-D meshes
IEEE Transactions on Image Processing
A method for motion adaptive frame rate up-conversion
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
New kernels for fast mesh-based motion estimation
IEEE Transactions on Circuits and Systems for Video Technology
An affine-based algorithm and SIMD architecture for video compression with low bit-rate applications
IEEE Transactions on Circuits and Systems for Video Technology
Fast Motion Estimation Algorithm Based on Complex Wavelet Transform
Journal of Signal Processing Systems
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This paper studies the issue of reducing the temporal redundancy between consecutive frames of a videoconferencing sequence at low bit-rate transmission. To overcome the drawbacks of the traditional block matching algorithm implemented in the most current video coding standards, we propose to better describe the motion of objects through the deformation of planar rectangular mesh grid adapted to the edges of the moving objects in the scene. The traditional inter coding modes are then replaced by two new classes of encoding algorithms. The first one concerns the B-frames where the problem of motion estimation is solved by a bidirectional prediction algorithm which reconstructs the quadrilateral mesh grids without any coding cost. The second class of algorithm much more complex than the first one is specific to the P-frames based on the principle of merging two hierarchical grids of reference. This algorithm addresses not only the motion estimation problem based on the adaptive quadrilateral mesh grid but also the issue of the relevant information (e.g. the positions of the nodes, the connectivity of each quadrilateral mesh of the grid and the motion compensation) to efficiently encode. The implementation of these algorithms in a complete coding scheme offers good performance compared to the H.264/AVC video coder at low bit-rate transmission.