Adaptive Filters: Theory and Applications
Adaptive Filters: Theory and Applications
Real-Time Pattern Matching Using Projection Kernels
IEEE Transactions on Pattern Analysis and Machine Intelligence
IEEE Transactions on Pattern Analysis and Machine Intelligence
Adaptive Filters
Video block motion estimation based on gray-code kernels
IEEE Transactions on Image Processing
Fast Algorithm for Walsh Hadamard Transform on Sliding Windows
IEEE Transactions on Pattern Analysis and Machine Intelligence
Fast Algorithms for the Computation of Sliding Discrete Hartley Transforms
IEEE Transactions on Signal Processing
Fast algorithms for the computation of sliding discrete sinusoidal transforms
IEEE Transactions on Signal Processing
Sequency-Ordered Complex Hadamard Transform: Properties, Computational Complexity and Applications
IEEE Transactions on Signal Processing - Part I
Hi-index | 35.68 |
Fast algorithms for computing the forward and inverse sequency-ordered complex Hadamard transforms (SCHT) in a sliding window are presented. The first algorithm consists of decomposing a length-N inverse SCHT (ISCHT) into two length-N/2 ISCHTs. The second algorithm, calculating the values of window i + N/4 from those of window i and one length-N/4 ISCHT and one length- N/4 Modified ISCHT (MISCHT), is implemented by two schemes to achieve a good compromise between the computation complexity and the implementation complexity. The forward SCHT algorithm can be obtained by transposing the signal flow graph of the ISCHT. The proposed algorithms require O(N) arithmetic operations and thus are more efficient than the block-based algorithms as well as those based on the sliding FFT or the sliding DFT. The application of the sliding ISCHT in transform domain adaptive filtering (TDAF) is also discussed with supporting simulation results.