公开(公告)号：US06683974B1

公开(公告)日：2004-01-27

申请号：US09712942

申请日：2000-11-16

申请人： Shunsuke Nagasawa ,  Hiroyuki Yamagata ,  Yasunori Idehara

发明人： Shunsuke Nagasawa ,  Hiroyuki Yamagata ,  Yasunori Idehara

IPC分类号： G06K900

CPC分类号： G06T7/0008 ,  G06T7/001

摘要： An image defect detection apparatus includes: an image acquisition section for acquiring an image as image data; a check section for checking for the presence or absence of a defect in the image, the defect being of one of a plurality of different types. The check section includes: a matrix setting subsection for setting, within the acquired image, an inspection reference region and an inspection region in accordance with each type of defect; a comparison value extraction subsection for extracting a comparison value based on image data in the inspection reference region and image data in the inspection region as set by the matrix setting subsection; and a comparison subsection for determining the presence or absence of the defect based on a comparison between the comparison value extracted by the comparison value extraction subsection and a predetermined threshold value.

摘要翻译： 图像缺陷检测装置包括：图像获取部分，用于获取图像作为图像数据; 用于检查图像中是否存在缺陷的检查部分，所述缺陷是多种不同类型之一。 检查部分包括：矩阵设置部分，用于根据每种类型的缺陷在所获取的图像内设置检查参考区域和检查区域; 比较值提取部分，用于基于检查参考区域中的图像数据提取比较值​​，以及由矩阵设置子部分设置的检查区域中的图像数据; 以及比较部分，用于基于由比较值提取部分提取的比较值与预定阈值之间的比较来确定缺陷的存在或不存在。