Search results for "Context-adaptive variable-length coding"

showing 2 items of 2 documents

Adapting hierarchical bidirectional inter prediction on a GPU-based platform for 2D and 3D H.264 video coding

2013

The H.264/AVC video coding standard introduces some improved tools in order to increase compression efficiency. Moreover, the multi-view extension of H.264/AVC, called H.264/MVC, adopts many of them. Among the new features, variable block-size motion estimation is one which contributes to high coding efficiency. Furthermore, it defines a different prediction structure that includes hierarchical bidirectional pictures, outperforming traditional Group of Pictures patterns in both scenarios: single-view and multi-view. However, these video coding techniques have high computational complexity. Several techniques have been proposed in the literature over the last few years which are aimed at acc…

Computer scienceReal-time computingGraphics processing unitComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION020206 networking & telecommunications020207 software engineering02 engineering and technologyData_CODINGANDINFORMATIONTHEORYHierarchical bidirectional picturesScalable Video CodingComputer engineeringMotion estimation0202 electrical engineering electronic engineering information engineeringH.264/AVCVideo codingEncoderContext-adaptive binary arithmetic codingGroup of picturesContext-adaptive variable-length codingEURASIP Journal on Advances in Signal Processing
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Reducing complexity in H.264/AVC motion estimation by using a GPU

2011

H.264/AVC applies a complex mode decision technique that has high computational complexity in order to reduce the temporal redundancies of video sequences. Several algorithms have been proposed in the literature in recent years with the aim of accelerating this part of the encoding process. Recently, with the emergence of many-core processors or accelerators, a new approach can be adopted for reducing the complexity of the H.264/AVC encoding algorithm. This paper focuses on reducing the inter prediction complexity adopted in H.264/AVC and proposes a GPU-based implementation using CUDA. Experimental results show that the proposed approach reduces the complexity by as much as 99% (100x of spe…

SpeedupComputational complexity theoryComputer science020206 networking & telecommunicationsData_CODINGANDINFORMATIONTHEORY02 engineering and technologyParallel computingCUDAAlgorithmic efficiency0202 electrical engineering electronic engineering information engineeringWorst-case complexity020201 artificial intelligence & image processingContext-adaptive binary arithmetic codingData compressionContext-adaptive variable-length coding
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