2009
DOI: 10.1002/ima.20211
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Intra mode selection in downsizing video transcoder based on H.264

Abstract: An intra mode selection scheme is proposed in this work, which supports both downsizing transcoding and re-quantization transcoding simultaneously. In the proposal, a total number of nonzero coefficients in precoded frame is used as criterion and a thresholding method is applied to select intra macroblock mode in reencoder. To calculate this threshold, which is related to re-quantization parameter (denoted as Q r ), we propose a Th_I-Q r model which includes direct method and percentage I16MB method. In the fo… Show more

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