Digital signal processing (3rd ed.): principles, algorithms, and applications
Digital signal processing (3rd ed.): principles, algorithms, and applications
DCT-based subpixel motion estimation
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 04
Semi-hierarchical based motion estimation algorithm for the Dirac video encoder
WSEAS Transactions on Signal Processing
Video Compression and Communications: From Basics to H.261, H.263, H.264, MPEG4 for DVB and HSDPA-Style Adaptive Turbo-Transceivers
IEEE Transactions on Image Processing
A fast hierarchical motion vector estimation algorithm using mean pyramid
IEEE Transactions on Circuits and Systems for Video Technology
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Motion estimation is one of the most important steps in video compression algorithms. It reduces temporal redundancy present in frame sequences and allows a better compression of video material. Most of the actual video compression algorithms use "block matching" methods which operate on the bitmap form of the frames. This paper presents a method for computing the values of DCT coefficients of a block of pixels positioned on certain coordinates over four adjacent blocks using only the DCT coefficients of these four blocks. Performance of this method is analyzed for both integer and non-integer displacements. Also, an equivalent of the full-search algorithm translated in 2D-DCT domain is presented.