Topic
Hadamard transform
About: Hadamard transform is a research topic. Over the lifetime, 7262 publications have been published within this topic receiving 94328 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: It is shown that a stationary point of the proposed algorithm corresponds to the fullband Wiener filter, and some numerical results are presented to show the performance of this scheme.
Abstract: In this correspondence, an analysis of a delayless critically decimated subband adaptive filter structure is presented. In this structure, adaptive weights in each subband are computed by the LMS algorithm and then transformed into those in fullband by the Hadamard transform. It is shown that a stationary point of the proposed algorithm corresponds to the fullband Wiener filter. Some numerical results are also presented to show the performance of this scheme.
27 citations
TL;DR: In this paper, a presentation of recent work on quantum permutation groups, complex Hadamard matrices, and the connections between them is presented, and a long list of problems is included.
Abstract: This is a presentation of recent work on quantum permutation groups, complex Hadamard matrices, and the connections between them. A long list of problems is included. We include as well some conjectural statements, about matrix models.
27 citations
TL;DR: In this article, some new inequalities of Hermite-Hadamard type for (α,m)-convex functions are obtained, and they are shown to be equivalent to the inequalities of the Hermite Hadamard Type 1.
Abstract: In the paper, some new inequalities of Hermite-Hadamard type for (α,m)-convex functions are obtained.
27 citations
TL;DR: In this paper, an abelian (p a, p b, p b, p a, p a − b )-difference set in G relative to N is characterized with = 2 and = 1.
27 citations
Patent•
IBM1
TL;DR: In this article, an improvement to a predictive video encoding method or apparatus that includes selecting a mode class within which to choose an encoding algorithm to encode individual blocks of video information is presented.
Abstract: An improvement to a predictive video encoding method or apparatus that includes selecting a mode class within which to choose an encoding algorithm to encode individual blocks of video information. Rather than implementing each algorithm in each mode class to ascertain an acceptable compression, the improvement eliminates searching through a class of encoding modes based simply on heuristics. The method comprises obtaining statistical information related to previous blocks of encoded video information, determining a mode class within which to chose a particular encoding algorithm based on the statistical information (e.g., heuristics) gathered, choosing an algorithm within the selected mode class using conventional techniques, and encoding the video information according to the chosen algorithm. Statistical information may include quantization parameters, prior encoding decisions, intensity or frequency values, or Hadamard transform coefficients of previously encoded macroblocks. Encoding complexity in the coder is reduced since one class of encoding modes is eliminated.
27 citations