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Abstract

Optimization of encoding process in video compression is an important research problem, especially in the case of modern, sophisticated compression technologies. In this paper, we consider HEVC, for which a novel method for selection of the encoding modes is proposed. By the encoding modes we mean e.g. coding block structure, prediction types and motion vectors. The proposed selection is done basing on noise-reduced version of the input sequence, while the information about the video itself, e.g. transform coefficients, is coded basing on the unaltered input. The proposed method involves encoding of two versions of the input sequence. Further, we show realization proving that the complexity is only negligibly higher than complexity of a single encoding. The proposal has been implemented in HEVC reference software from MPEG and tested experimentally. The results show that the proposal provides up to 1.5% bitrate reduction while preserving the same quality of a decoded video.
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Authors and Affiliations

Olgierd Stankiewicz
Krzysztof Wegner
Damian Karwowski
Jakub Stankowski
Krzysztof Klimaszewski
Tomasz Grajek

Authors and Affiliations

Krzysztof Klimaszewski
Sebastian Borucki
Jacek Łuczak
Dariusz Zmarzły
Michał Kunicki
Andrzej Cichoń
Franciszek Witos
Czesław Leśnik
Dariusz Pleban
Milan Timko
Tomasz Rogala
Piotr Serafin
Tadeusz Gudra
Jerzy Filipiak
Dariusz Banasiak
Krzysztof Herman
Krzysztof Opieliński
Tomasz Hejczyk
Krzysztof Jasek
Mateusz Pasternak
Michał Grabka
Witold Kardyś
Andrzej Milewski
Adam Kawalec
Marta Okoń-Fąfara
Bartłomiej Fąfara
Aneta Olszewska
Piotr Pruchnicki
Marcin Wrzosek
Józef Nicpoń
Przemysław Podgórski
Tadeusz Pustelny
Marcin Szugajew
Olga Stec
Grzegorz Szerszeń
Daria Wotzka
Agnieszka Boruń
Adam Bald
Marzena Dzida
Sylwia Jężak
Monika Geppert-Rybczyńska
Katarzyna Kaczmarek
Tomasz Hornowski
Arkadiusz Józefczak
M. Kubovčíková
A. Skumiel
Z. Rozynek
M. Timko
Peter Kopcansky
Bogumił Linde
Vyacheslav N. Verveyko
Marina V. Verveyko
Darya V. Verveyko
Andrey Yu. Verisokin
Nikita S. Chebrov
Witold Mikulski
Danuta Augustyńska
Bożena Smagowska

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