DCT-Domain Embedded Memory Compression for Hybrid Video Coders
Journal of VLSI Signal Processing Systems - Special issue on recent advances in the design and implementation of signal processing systems
Motion compensation on DCT domain
EURASIP Journal on Applied Signal Processing
Word level multi-script identification
Pattern Recognition Letters
Motion estimation in 2D-DCT transform domain
ICAI'08 Proceedings of the 9th WSEAS International Conference on International Conference on Automation and Information
Performance evaluation of motion estimation in DCT transform domain
WSEAS Transactions on Signal Processing
IEEE Transactions on Circuits and Systems for Video Technology
Phase information and space filling curves in noisy motion estimation
IEEE Transactions on Image Processing
Low bit rate video processing algorithm
Proceedings of the International Conference & Workshop on Emerging Trends in Technology
Fast motion estimation using spatio temporal filtering
ICIAR'06 Proceedings of the Third international conference on Image Analysis and Recognition - Volume Part I
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We propose novel discrete cosine transform (DCT) pseudophase techniques to estimate shift/delay between two one-dimensional(1-D) signals directly from their DCT coefficients by computing the pseudophase shift hidden in DCT and then employing the sinusoidal orthogonal principles, applicable to signal delay estimation remote sensing. Under the two-dimensional (2-D) translational motion model, we further extend the pseudophase techniques to the DCT-based motion estimation (DXT-ME) algorithm for 2-D signals/images. The DXT-ME algorithm has certain advantages over the commonly used full search block-matching approach (BKM-ME) for application to video coding despite certain limitations. In addition to its robustness in a noisy environment and low computational complexity, O(M2) for an M×M search range in comparison to the O(N2·M2) complexity of BKM-ME for an N×N block, its ability to estimate motion completely in DCT domain makes possible the fully DCT-based motion-compensated video coder structure, which has only one major component in the feedback loop instead of three as in the conventional hybrid video coder design, and thus results in a higher system throughput. Furthermore, combination of the DCT and motion estimation units can provide space for further optimization of the overall coder. In addition, the DXT-ME algorithm has solely highly parallel local operations and this property makes feasible parallel implementation suitable for very large scale integration (VLSI) design. Simulation on a number of video sequences is presented with comparison to BKM-ME and other fast block search algorithms for video coding applications even though DXT-ME is completely different from any block search algorithms