Parallel video decoding
Digital video is a popular technology used in many different applications. The quality of video, expressed in the spatial and temporal resolution, has been increasing continuously in the last years. In order to reduce the bitrate required for its storage and transmission, a new generation of video e...
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| Format: | doctoral thesis |
| Publication Date: | 2011 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/94561 |
| Online Access: | https://hdl.handle.net/2117/94561 https://dx.doi.org/10.5821/dissertation-2117-94561 |
| Access Level: | Open access |
| Keyword: | H.264 High definition Video decoding Parallel SIMD MPEG-2 Vector processors Heterogeneous computing Multicore Computer architecture Parallel programming Arquitectura d'ordinadors Vídeo digital Àrees temàtiques de la UPC::Informàtica |
| Summary: | Digital video is a popular technology used in many different applications. The quality of video, expressed in the spatial and temporal resolution, has been increasing continuously in the last years. In order to reduce the bitrate required for its storage and transmission, a new generation of video encoders and decoders (codecs) have been developed. The latest video codec standard, known as H.264/AVC, includes sophisticated compression tools that require more computing resources than any previous video codec. The combination of high quality video and the advanced compression tools found in H.264/AVC has resulted in a significant increase in the computational requirements of video decoding applications. The main objective of this thesis is to provide the performance required for real-time operation of high quality video decoding using programmable architectures. Our solution has been the simultaneous exploitation of multiple levels of parallelism. On the one hand, video decoders have been modified in order to extract as much parallelism as possible. And, on the other hand, general purpose architectures has been enhanced for exploiting the type of parallelism that is present in video codec applications. |
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