Please use this identifier to cite or link to this item: https://hdl.handle.net/11000/31383
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dc.contributor.authorMigallon, Hector-
dc.contributor.authorPiñol, Pablo-
dc.contributor.authorLópez Granado, Otoniel Mario-
dc.contributor.authorGaliano, Vicente-
dc.contributor.authorPerez Malumbres, Manuel-
dc.contributor.otherDepartamentos de la UMH::Ingeniería de Computadoreses_ES
dc.date.accessioned2024-02-09T12:51:18Z-
dc.date.available2024-02-09T12:51:18Z-
dc.date.created2018-05-
dc.identifier.citationApplied Sciences Volume 8 Issue 6es_ES
dc.identifier.isbn2076-3417-
dc.identifier.urihttps://hdl.handle.net/11000/31383-
dc.description.abstractThe most recent video coding standard, High Efficiency Video Coding (HEVC), is able to significantly improve the compression performance at the expense of a huge computational complexity increase with respect to its predecessor, H.264/AVC. Parallel versions of the HEVC encoder may help to reduce the overall encoding time in order to make it more suitable for practical applications. In this work, we study two parallelization strategies. One of them follows a coarse-grain approach, where parallelization is based on frames, and the other one follows a fine-grain approach, where parallelization is performed at subpicture level. Two different frame-based approaches have been developed. The first one only uses MPI and the second one is a hybrid MPI/OpenMP algorithm. An exhaustive experimental test was carried out to study the performance of both approaches in order to find out the best setup in terms of parallel efficiency and coding performance. Both frame-based and subpicture-based approaches are compared under the same hardware platform. Although subpicture-based schemes provide an excellent performance with high-resolution video sequences, scalability is limited by resolution, and the coding performance worsens by increasing the number of processes. Conversely, the proposed frame-based approaches provide the best results with respect to both parallel performance (increasing scalability) and coding performance (not degrading the rate/distortion behavior).es_ES
dc.formatapplication/pdfes_ES
dc.format.extent24es_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectHEVCes_ES
dc.subjectvideo codinges_ES
dc.subjectparallel encodinges_ES
dc.subjectshared memoryes_ES
dc.subjectdistributed shared memoryes_ES
dc.subject.otherCDU::6 - Ciencias aplicadas::62 - Ingeniería. Tecnologíaes_ES
dc.titleFrame-Based and Subpicture-Based Parallelization Approaches of the HEVC Video Encoderes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://doi.org/10.3390/app8060854es_ES
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