在低级晶族光学特性的研究中，光性符号的确定对未知晶体及矿物的鉴定有着重要的意义。
In the study of optical properties of low class crystal system, the identification of optic sign has important meaning to unknown crystal and mineral determination.
为提高面结构光检测中符号识别效率和增强识别方法的鲁棒性，提出了一种基于形心特征面结构光符号识别方法。
To improve the efficiency of symbolic recognition and enhance the robustness of identification methods, a symbol recognition method based on the characteristics of the centroid is presented.
性能分析表明OEHCBSS可实现性强、性能优，特别是其光符号替换处理器具有通用性强、速度快等特点。
The evaluation of performance shown that the OEHCBSS is easy to realize and high performance, especially its symbolic substitution processor is multi function and high speed.
性能分析表明OEHCBSS可实现性强、性能优，特别是其光符号替换处理器具有通用性强、速度快等特点。
The evaluation of performance shown that the OEHCBSS is easy to realize and high performance, especially its symbolic substitution processor is multi function and high speed.
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