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Pedro Assuncao
Researcher at Polytechnic Institute of Leiria
Publications - 181
Citations - 2304
Pedro Assuncao is an academic researcher from Polytechnic Institute of Leiria. The author has contributed to research in topics: Encoder & Transcoding. The author has an hindex of 19, co-authored 174 publications receiving 2090 citations. Previous affiliations of Pedro Assuncao include Instituto Superior Técnico & University of Coimbra.
Papers
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Journal ArticleDOI
A frequency-domain video transcoder for dynamic bit-rate reduction of MPEG-2 bit streams
Pedro Assuncao,Mohammed Ghanbari +1 more
TL;DR: This paper proposes a drift-free MPEG-2 video transcoder, working entirely in the frequency domain, and shows that optimal transcoding of high-quality bit streams can produce better picture quality than that obtained by directly encoding the uncompressed video at the same bit rates using a nonoptimized Test Model 5 (TM5) encoder.
Journal ArticleDOI
Performance and Computational Complexity Assessment of High-Efficiency Video Encoders
TL;DR: It is shown that low-complexity encoding configurations, defined by careful selection of coding tools, achieve coding efficiency comparable to that of high- Complexity configurations.
Journal ArticleDOI
Fast HEVC Encoding Decisions Using Data Mining
TL;DR: Extensive experiments and comparisons demonstrate that the proposed early termination schemes achieve the best rate-distortion-complexity tradeoffs among all the compared works.
Journal ArticleDOI
Complexity control of high efficiency video encoders for power-constrained devices
TL;DR: A novel complexity control method for the near future HEVC encoders running on power-constrained devices based on a decision algorithm that dynamically adjusts the depth of the Coding Units (CU) defined by quad-tree structures.
Proceedings ArticleDOI
High efficiency coding of light field images based on tiling and pseudo-temporal data arrangement
Cristian Perra,Pedro Assuncao +1 more
TL;DR: A light field coding scheme based on a low-complexity preprocessing approach that generates a pseudo-video sequence suitable for standard compression using HEVC, which is consistently better than JPEG and revealing significantly higher gains, particularly for higher compression ratios.