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Storm processor is a stream-based prototype processor designed for media processing. It has good performance and high efficiency for modern media processing and signal processing applications. It exploits the large amounts of parallelism available in many signal processing applications yet achieves high power efficiency by managing data movement directly with an on-chip register-file hierarchy and...
This paper analyzes intra prediction method in H.264/AVC high profile, and designs a reconfigurable hardware decoding architecture for intra prediction. To effectively reduce access times and resource consumption for on-chip RAM, an efficient buffer design is presented in prediction mode selection and reference pixel access. Based on the similarities of intra prediction for different modes, a reconfigurable...
A novel variable bit rate (VBR) control method is proposed for single-pass audio video coding standard (AVS) video encoding in this paper. An efficient scene change detection method based on peak signal to noise ratio (PSNR) is introduced to solve the problem of quality degradation in subsequent frames when scene changes occur. Furthermore, the proposed rate control method can be efficiently adapted...
In this paper, a new fast mode-selection approach is proposed. This algorithm combines the proposed approaches of mode pre-decision and precise large-small mode decision, by selecting the best mode efficiently. Experimental results show that the proposed approach can reduce the computational cost of full search and fast multi-block motion estimation by 80 % and 45 %, respectively, with similar visual...
An adaptive weighted prediction algorithm is proposed to improve the coding efficiency for video scenes that contain global brightness variations caused by fade in/out or local brightness variations caused by camera flashes. A two brightness-variation parameters model is used, which represent multiplier and offset components of the brightness variation. Brightness variations at frame and macroblock...
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