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This paper presents a novel system-level design methodology, called quality-driven design for video applications by bitwidth optimization (QDDV). An output quality adaptive approach based on a forward... and a backward propagation technique, which are effective bitwidth analysis and output-qualitybased bitwidth analysis are also presented for variable bitwidth optimization. In order to illustrate the potential of the proposed methodology, MPEG-2 video is used as the driver application. Experimental results show the effectiveness of the methodology.続きを見る
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