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Machine-to-machine communications (M2M) provide a promising solution for accurately collecting real-time status information of primary equipment in substations. However, the system quality of service (QoS) might be severely degraded by the high-amplitude impulsive noise produced by primary equipment. In this paper, we firstly propose a multi-antenna M2M communications based architecture for substation...
Error Control is an important aspect for video coding and transmission. In this paper, we study error control for MGS-based bitstream. Our method not only duplicate the key data of MGS slice to improve the quality of decoded video, but also construct a compensated MGS slice to maintain bitstream conformance. Experiments show better effect and better performance of the proposed method compared to the...
Medium Grain Scalable (MGS) coding is widely used as the quality scalable video coding (SVC) method. In this paper, we study bitstream extractor for MGS-based bitstream. In MGS, the coded data corresponding to a quantization step size can be fragmented into at most 15 sub-layers, which is called MGS slices. The contribution of each slice to the video quality is evaluated by our proposed algorithm,...
Based on our rate-distortion (R-D) model, an innovative coding characteristics, texture-complexity (TC), and its adaptive linear forward-prediction model are proposed. For picture quality control in H.264, an overhead bits prediction model is also proposed to best distribute available bits. Experimental results show that the H.264 encoder (JM98), using the proposed rate control algorithm, achieves...
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