CAJ | 학술논문

自动光学检测系统采用周期性比较和逻辑运算的方法获取缺陷点的信息。但由于其最小周期比较 Pitch 存在小数，会造成比较对象的非正确选取。利用两点一线原理，可以构建一次线性方程使原来断点模拟成连续的点，达到无论比较距离是会否为整数，都能找到相对应的灰度值的效果。利用此方法可以提高异常点检出的准确度，同时会避免对产品产量、品质及成本的不利影响，具有重要意义。
자동광학검측계통채용주기성비교화라집운산적방법획취결함점적신식。단유우기최소주기비교 Pitch 존재소수，회조성비교대상적비정학선취。이용량점일선원리，가이구건일차선성방정사원래단점모의성련속적점，체도무론비교거리시회부위정수，도능조도상대응적회도치적효과。이용차방법가이제고이상점검출적준학도，동시회피면대산품산량、품질급성본적불리영향，구유중요의의。
Method for automatic optical inspection system with periodic comparison and logic operation can obtain defect point information.Because of the existence of minimal cycle comparison of Pitch dec-imal,we cannot get the correct comparison.The use of two points formed one line,we can construct a linear equation to simulate the original breakpoints into continuous points.Just then,whether the comparative distance is an integer,the corresponding effect is found in the gray value.Using this method to improve the accuracy of anomaly check,the adverse effect is avoided on the yield,quality and cost of the product,which has the vital significance.