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根据焦散线的原理,分析了Ⅰ型焦散线实验图象的特点,提出确定图像中焦散线位置的准则。基于此准则的微机图象处理,可自动精确测量Ⅰ型焦散线的最大直径。
According to the principle of caustics, the characteristics of experimental image of type Ⅰ caustic are analyzed and the criterion for determining caustic position in image is proposed. Based on this criterion, the maximum diameter of type Ⅰ caustic can be automatically and accurately measured by microcomputer image processing.