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王立娟 《交通部上海船舶运输科学研究所学报》2003,26(2):78-81
随着电子技术与图像通信技术的迅猛发展,视频压缩技术逐渐规范与成熟,阐述基于DSP的实时视频压缩系统的开发。在概述基于DSP芯片的视频信号采集与处理的原理后,对系统主要硬件的选择进行详尽的分析。简单介绍开发环境和软件的选择。 相似文献
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In the smoothed particle hydrodynamics (SPH) method, a meshless interpolation scheme is needed for the unknown function in
order to discretize the governing equation. A particle approximation method has so far been used for this purpose. Traditional
particle interpolation (TPI) is simple and easy to do, but its low accuracy has become an obstacle to its wider application.
This can be seen in the cases of particle disorder arrangements and derivative calculations. There are many different methods
to improve accuracy, with the moving least square (MLS) method one of the most important meshless interpolation methods. Unfortunately,
it requires complex matrix computing and so is quite time-consuming. The authors developed a simpler scheme, called higher-order
particle interpolation (HPI). This scheme can get more accurate derivatives than the MLS method, and its function value and
derivatives can be obtained simultaneously. Although this scheme was developed for the SPH method, it has been found useful
for other meshless methods. 相似文献
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