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Claudio Weidmann
Researcher at Cergy-Pontoise University
Publications - 45
Citations - 418
Claudio Weidmann is an academic researcher from Cergy-Pontoise University. The author has contributed to research in topics: Decoding methods & Upper and lower bounds. The author has an hindex of 12, co-authored 45 publications receiving 410 citations. Previous affiliations of Claudio Weidmann include École Polytechnique Fédérale de Lausanne & Investment Company Institute.
Papers
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Journal ArticleDOI
Rate Distortion Behavior of Sparse Sources
Claudio Weidmann,Martin Vetterli +1 more
TL;DR: Binding techniques are applied to two source models: Gaussian mixtures and power laws matching the approximately scale-invariant decay of wavelet coefficients, which allow to bound high-rate compression performance of a scalar mixture compared to a corresponding unmixed transform coding system.
Proceedings ArticleDOI
Rate-distortion analysis of spike processes
Claudio Weidmann,Martin Vetterli +1 more
TL;DR: This work proposes spike processes as a tool that allows a more fundamental trade-off, namely between lossy position coding and lossy value coding, and investigates the Hamming distortion case and gives analytic results for single and multiple spikes.
Journal ArticleDOI
Analytical tools for optimizing the error correction performance of arithmetic codes
TL;DR: Simulation results highlight the validity of the theoretical error bounds and show that for equivalent rate and complexity, a simple optimization yields JSCACs that outperform classical tandem schemes at low to medium SNR.
Proceedings ArticleDOI
Significance tree image coding using balanced multiwavelets
TL;DR: This work assesses whether the added orthogonality of the new balanced multiwavelets yields a performance gain compared to traditional biorthogonal transforms, and re-establishs the rule of thumb that strict orthog onality is not a key factor in image transform coding.
Proceedings ArticleDOI
Combined sequential decoding and error concealment of H.264 video
TL;DR: A soft-input sequential decoding algorithm for the prediction residuals encoded in low-priority packets is proposed, which provides significant PSNR gains compared to a simple packet-loss scenario.