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The JPEG-LS with rate control mechanism is widely applied in buffer and bandwidth managements. In existing works, the compression ratio (CR) gradually reaches target compression ratio (TCR) based on the adjustment of information loss level at row by row. However, the CR-fluctuation is induced and limits its performance in bandwidth-efficiency applications. In this paper, the proposed segment-based...
Both computation-intensive and bandwidth- intensive are primary characterizes in closed-loop video coding systems. With the rapid progress of semiconductor industry, the commutation-intensive issue can be properly handled by parallelism or pipeline processing. Therefore, bandwidth-intensive issue becomes more and more important in video coding. The embedded compression (EC) technology is widely applied...
From system-on-chip (SOC) perspective, memory bandwidth plays an important role in system performance for video coding applications. Owing to the locality of video data, the data reuse scheme is widely applied to reduce the memory bandwidth requirement. For further improvement of performance, frame-based data reuse scheme, single reference frame and multiple current macroblocks (SRMC), can provide...
In the paper, we propose a new algorithm to dramatically reduce the complexity of transcoder. In our H.263 to H.264 transcoding, the time consumption for motion estimation during encoding process is shortened. The new algorithm uses the information extracted from decoder, and the modified motion vector decomposition algorithm is also proposed. During motion re-estimation, extensive experimental results...
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