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    • 10. 发明授权
    • Inspection method using area of interest (AOI) analysis
    • 使用感兴趣区域的检测方法(AOI)分析
    • US5369713A
    • 1994-11-29
    • US82437
    • 1993-06-28
    • Nira SchwartzArie ShaharRichard Woods
    • Nira SchwartzArie ShaharRichard Woods
    • B07C5/34G01B11/02G01N21/90G06K9/00
    • B07C5/3408G01B11/024G01N21/9054G01N21/9081G01N21/9027
    • A technique for detecting defects in stationary products or in products moving on a production line (102, FIG. 1) by analyzing area of interest (AOls) of their modified images uses a matrix or linescan camera (104, FIG. 1) for taking images of products (102). The product's dimensions are measured with accuracy, and the existence and alignment of caps and seals is determined. The technique is much faster and more accurate than current techniques and is based up on an analysis of the AOls and their discontinuities. (209 FIG. 1). Carefully selected AOls of the modified image (2 to 8, FIG. 2) are saved in the memory of a computer (106, FIG. 1). The method also includes loading look-up tables to modify the gray levels of the products; saving AOls in memory to be analyzed (FIG. 1); analyzing AOl data, counting pixel discontinuities, etc. The results can be used to measure product ovality, check caps and seals on products, and check changes of fluid or content levels in containers.
    • 用于通过分析其修改图像的感兴趣区域(AO1)来检测在生产线(102,图1)上移动的固定产品或产品中的缺陷的技术使用矩阵或线扫描照相机(104,图1) 产品图片(102)。 产品的尺寸是精确测量的,确定盖子和密封件的存在和对齐。 该技术比当前技术更快更准确,并且基于对AOI及其不连续性的分析。 (209图1)。 经修改的图像(图2中的2至8)的仔细选择的AO1被保存在计算机的存储器(图1中的106)中。 该方法还包括加载查找表以修改产品的灰度级; 将AOls保存在待分析的存储器中(图1); 分析AOI数据,计数像素不连续性等。结果可用于测量产品椭圆度,检查瓶盖和产品密封,并检查容器中流体或含量水平的变化。