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Portable Network Graphics (PNG) is a bitmapped image format that employs lossless data compression. PNG is created to improve upon and replace GIF (Graphics Interchange Format) as an image-file format not requiring a patent license. The PNG file is widely used in embedded systems. In this paper, the PNG file structure and decoding process is introduced. According the PNG data chunks, the decoding...
Embedded zerotree (EZW) and SPIHT coding, introduced by J.M.Shapiro and Amir Said, are very effective and being used in many fields widely. Embedded zero-tree wavelet encoding is currently the most advanced image coding methods, In this paper, brief explanation of the principles of SPIHT was first provided, and then, some improvement of SPIHT algorithm according to experiments was introduced. For...
Technology-motivated M&A (Mergers and acquisition) and supply chain management have been viewed as the main direction of modern business management in the 21'st century. How to realize coordination by restructuring and integrating supply chain in technology-motivated M&A is very important for improving competition and reaching the strategic goal. Through studying the effect of technology-motivated...
Aimed at the problem of narrow band transmission in transmission channels, a new coding algorithm based on H.264 is offered. By the method of reducing bit coding of I frame and improving coding stream of P frame, coding stream can transmit averagely in narrow band, transmission efficiency of coding stream is improved Experiment results show that when I frame coding which takes up more time is reduced...
Chemokine receptors represent a prime target for the development of novel therapeutic strategies in a variety of disease processes. The prediction of interesting proteins types by computational methods can provide new clues in functional studies of uncharacterized proteins without performing extensive experiments. Support vector machine (SVM) is a new kind of approach to supervised pattern classification...
Genetic algorithm and particle swarm optimization both belong to the evolutionary algorithms; they have much in common, but also have some differences. The paper set out from optimizing many resources, discussed the method of utilizing GA and PSO in detail, in order to equilibrium and optimize the problem of scheduling resources which are limited separately. Through analysis of comparative experiment,...
Plants simulation plays an increasingly important role in our learning and life. But the choosing of modeling parameters, related to the simulation results good or bad. This paper use improved genetic algorithm to optimize the parameters to obtain a high degree of adaptation parameters. The results of experiments indicate that forest-environment model established by improved genetic algorithm can...
In order to share multimedia transmissions in mesh networks and optimize the utilization of network resources, this paper presents a Two-stage Evolutionary Algorithm (TEA), i.e., unicast routing evolution and multicast path composition, for dynamic multicast routing. The TEA uses a novel link-duplicate-degree encoding, which can encode a multicast path in the link-duplicate-degree and decode the path...
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