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Rate control (RC) plays a critical role in video coding for regulating the coded bit-stream to achieve the target bitrate, which involves two basic steps: bit allocation (BA) and quantisation parameter selection. Here, the former is a key element to directly affect the performance of RC. So, in this study, an efficient frame-level BA algorithm is proposed for the latest video coding standard H.265/high-efficiency...
In this paper, word-length optimization for a pipelined 8K FFT processor is presented. The processor is based on radix-2/4/8 and mixed radix algorithm, and SDF architecture is used. The internal word-length and data format are important issues when designing pipelined FFT processors, it will affect precision and gate number. To obtain a good solution, three Matlab models for the processor are developed...
In order to improve the classifier performance in semantic image annotation, we propose a novel method which adopts learning vector quantization (LVQ) technique to optimize low level feature data extracted from given image. Some representative vectors are selected with LVQ to train support vector machine (SVM) classifier instead of using all feature data. Performance is compared between the methods...
In spite of the rising demands for reusable information systems, current designs are still insufficient in providing efficient reusable mechanisms for system design. One of the major problems hindering the development of information reuse in most traditional systems, which include component-based systems and object-oriented systems, is the lack of the self-organising ability among the system components...
In supply chain of perishable product with quantity flexibility and buy-back contract, cycle service level of retailer's local decision, whole supply chain's decision, and supplier-retailer's joint decision are defined and optimized respectively. Double marginalization based on service level is also analyzed by model making and simulative examples. The conclusion is that join decision has important...
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