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Ahmed Tamtaoui
Researcher at Amrita Vishwa Vidyapeetham
Publications - 75
Citations - 867
Ahmed Tamtaoui is an academic researcher from Amrita Vishwa Vidyapeetham. The author has contributed to research in topics: Macroblock & Peak signal-to-noise ratio. The author has an hindex of 11, co-authored 69 publications receiving 706 citations. Previous affiliations of Ahmed Tamtaoui include French Institute for Research in Computer Science and Automation.
Papers
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Fast Mode Decision Algorithm for Intra prediction in H.264/AVC Video Coding
TL;DR: A fast mode decision algorithm for intra prediction to reduce the complexity of H.264 video coding is proposed and is able to reduce on the average 84.68% encoding time, with a negligible peak signal-to noise ratio loss.
Journal ArticleDOI
A performance comparison of measurement matrices in compressive sensing
TL;DR: The foundation of compressive sensing is explained and the process of measurement is highlighted by reviewing the existing measurement matrices, and a 3‐level classification is provided and the results show that the Circulant, Toeplitz, and Hadamard matrices outperform the other measurementMatrices.
Journal ArticleDOI
Constrained disparity and motion estimators for 3DTV image sequence coding
Ahmed Tamtaoui,Claude Labit +1 more
TL;DR: This paper presents two-dimensional motion estimation methods which take advantage of the intrinsic redundancies inside 3DTV stereoscopic image sequences, subject to the crucial assumption that an initial calibration of the stereoscopic sensors provides us with geometric change of coordinates for two matched features.
Proceedings ArticleDOI
Compressive sensing: Performance comparison of sparse recovery algorithms
TL;DR: In this article, a deep survey of sparse recovery algorithms for cognitive radio is presented, and the results show that techniques under Greedy category are faster, techniques of Convex and Relaxation category perform better in terms of recovery error, and Bayesian based techniques are observed to have an advantageous balance of small recovery error and a short recovery time.
Proceedings ArticleDOI
Spectrum sensing: Enhanced energy detection technique based on noise measurement
TL;DR: In this article, the authors investigate a dynamic selection of the threshold by measuring the power of noise present in the received signal using a blind technique and show that the proposed model was implemented and tested using GNU Radio software and USRP units.