Complexity Control Based on a Fast Coding Unit Decision Method in the HEVC Video Coding Standard

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Show simple item record Jiménez Moreno, Amaya Martínez Enríquez, Eduardo Díaz de María, Fernando 2020-09-22T10:03:30Z 2020-09-22T10:03:30Z 2016-04-01
dc.identifier.bibliographicCitation IEEE Transactions on Multimedia, (2016), 18(4), pp.: 563 - 575.
dc.identifier.issn 1520-9210
dc.description.abstract The emerging high-efficiency video coding standard achieves higher coding efficiency than previous standards by virtue of a set of new coding tools such as the quadtree coding structure. In this novel structure, the pixels are organized into coding units (CU), prediction units, and transform units, the sizes of which can be optimized at every level following a tree configuration. These tools allow highly flexible data representation; however, they incur a very high computational complexity. In this paper, we propose an effective complexity control (CC) algorithm based on a hierarchical approach. An early termination condition is defined at every CU size to determine whether subsequent CU sizes should be explored. The actual encoding times are also considered to satisfy the target complexity in real time. Moreover, all parameters of the algorithm are estimated on the fly to adapt its behavior to the video content, the encoding configuration, and the target complexity over time. The experimental results prove that our proposal is able to achieve a target complexity reduction of up to 60% with respect to full exploration, with notable accuracy and limited losses in coding performance. It was compared with a state-of-the-art CC method and shown to achieve a significantly better trade-off between coding complexity and efficiency as well as higher accuracy in reaching the target complexity. Furthermore, a comparison with a state-of-the-art complexity reduction method highlights the advantages of our CC framework. Finally, we show that the proposed method performs well when the target complexity varies over time.
dc.description.sponsorship This work has been partially supported by the National Grant TEC2014-53390-P of the Spanish Ministry of Economy and Competitiveness.
dc.format.extent 8
dc.language.iso eng
dc.publisher IEEE
dc.rights © 2016 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
dc.subject.other Complexity Control (CC)
dc.subject.other Fast coding unit decision
dc.subject.other HEVC
dc.subject.other On the fly estimation
dc.title Complexity Control Based on a Fast Coding Unit Decision Method in the HEVC Video Coding Standard
dc.type article
dc.description.status Publicado
dc.subject.eciencia Telecomunicaciones
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2014-53390-P
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 563
dc.identifier.publicationissue 4
dc.identifier.publicationlastpage 575
dc.identifier.publicationtitle IEEE Transactions on Multimedia
dc.identifier.publicationvolume 18
dc.identifier.uxxi AR/0000017928
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.affiliation.dpto UC3M. Departamento de Teoría de la Señal y Comunicaciones
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Procesado Multimedia
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