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Efficient algorithms for HEVC bitrate transcoding
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DOI：10.1007/s11042-016-4182-8.png)
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Abstract
En 中文
HEVC, which is the latest video coding standard, resulting in much higher compression efficiency than any previous standards. It is expected to take the place of the widely deployed standard H.264. The final version of HEVC has been published by ISO/IEC and ITU-T at January 2013. To speed up its adoption and application, highly efficient transcoding techniques among current deployed video standards and various versions of HEVC bitstreams are needed. Hence, an accelerated HEVC bit-rate transcoder, based on the cascaded pixel-domain framework, is proposed in this paper. Based on thorough statistical analysis, the proposed algorithm mainly utilizes information from the input video stream such as Code Unit (CU) depths, Prediction Unit PU) partitions as well as the image complexity to speedup the transcoding procedure. Experimental results demonstrate the superior performance of the proposed algorithm and its suitability for a wide range of bit-rate reduction tasks.
Keywords:
HEVC
Transcoding
Bit-rate
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