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对于这种类型的检查，一个基于PC的系统中的应用数字图像分析的光弹图像是首选。
For this type of inspection, a PC-based system using digital image analysis of the photoelastic image is preferred.
运用折射率椭球分析晶体的弹光效应，给出了三方晶系沿光轴方向的应力与折射率的变化关系。
The relation between the stress along the optical axis of trigonal crystallographic system and the refractive index is established.
在讨论和分析图像形态学原理和几种基本运算的效果基础上，提出了将图像形态学技术应用到光弹应力分析中。
Based on the principles of image morphology and several basic operations, this paper proposes applying the image morphology technology in the analysis of photoelastic stress.
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