The paper describes the principle of the technology of digital image procession applied in untouched measure, and details the whole process of vertex recognition, and gets a kind result.
描述了数字图像处理技术用于非接触精确测量的原理，对整个顶点识别过程做了详细的探讨，给出了满意的识别结果。
A set of flow visualization experimental apparatus including of water channel, hydrogen bubble producing equipment and flow digital image acquisition and procession software is established.
搭建了一套包括流动显示水槽、氢气泡发生装置、数字图像采集及分析软件相结合的氢气泡流动显示实验系统。
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