公开(公告)号：US5911003A

公开(公告)日：1999-06-08

申请号：US638554

申请日：1996-04-26

Applicant: Richard A. Sones

Inventor： Richard A. Sones

IPC: G06T1/00 ,  G06T7/00 ,  G06K9/00

CPC classification number: G06T7/0006 ,  G06T2207/10024 ,  G06T2207/30164

Abstract: An imaging device coupled to a processor generates a number of image signals corresponding to a multicolor pattern of an item in motion. Each of a number of regions of the pattern is correlated to one of a number of reference colors to generate a segmented image of the pattern. The processor models the multicolor pattern by deriving a number of test values from the segmented image representation. Each test value is representative of a corresponding one of the regions and is determined as a function of region size independent of orientation of the multicolor pattern. The test values are compared to reference data to detect a variation of the item. The reference colors may be determined from color pairs with each pair having a first member from a first set of sample colors and a second member from a second set of sample colors. The first member is closer to the second member than any other color of the second set in the color space, and the second member is closer to the first member than any other color of the first set in the color space. An image of the item randomly oriented with respect to a model image is characterized by generating a number of characteristic values within the processor with respect to rotational position about an item image point. A rotationally correlated item image is generated as a function of the characteristic values for evaluation.

Abstract translation: 耦合到处理器的成像装置产生对应于运动中的物品的多色图案的多个图像信号。 图案的多个区域中的每一个与多个参考颜色中的一个相关联以生成图案的分割图像。 处理器通过从分段图像表示中导出许多测试值来对多色图案进行建模。 每个测试值代表对应的一个区域，并且被确定为与多色图案的取向无关的区域大小的函数。 将测试值与参考数据进行比较以检测项目的变化。 参考颜色可以从颜色对确定，每对具有来自第一组样本颜色的第一构件和来自第二组样本颜色的第二构件。 第一构件比颜色空间中的第二组中的任何其它颜色更靠近第二构件，并且第二构件比颜色空间中的第一组的任何其它颜色更接近第一构件。 相对于模型图像随机取向的项目的图像的特征在于在处理器内相对于关于项目图像点的旋转位置产生多个特征值。 作为用于评估的特征值的函数产生旋转相关项目图像。

公开(公告)号：US5451773A

公开(公告)日：1995-09-19

申请号：US299806

申请日：1994-09-01

Applicant: James E. Triner ,  Howard Fein ,  Don W. Cochran

Inventor： James E. Triner ,  Howard Fein ,  Don W. Cochran

IPC: G01M3/38 ,  G01N21/954 ,  G01N9/04

CPC classification number: G01N21/909 ,  G01M3/38 ,  G01N21/894 ,  G01N21/9036

Abstract: A system for detecting a side wall perforation in containers operates non-invasively and at line speeds. A stream of similar containers are communicated to an inspection area. An exterior of each container is illuminated while the container is in the inspection area. Light from an interior of the container is focused, via a lens, to a video camera. Any perforate flaw in the container walls results in a point source of light in the container interior. Since the perforations are relatively small, the point source is created due to diffractive properties of the slit perforation. These diffractive properties facilitate obtaining an image of the flaw from the camera disposed to the interior of the container when the camera is mounted orthogonally to the perforation or parallel to the wall being inspected. In an other embodiment, the relative positions of the light source and camera are interchanged. A method for container inspection is also provided in connection with the afore-noted structure.

Abstract translation: 用于检测容器中的侧壁穿孔的系统非侵入性地以线速度运行。 类似的容器流传送到检查区域。 当容器处于检查区域时，每个容器的外部都被照亮。 来自容器内部的光通过镜头聚焦到摄像机。 容器壁中的任何穿孔缺陷导致容器内部的点光源。 由于穿孔相对较小，所以由于狭缝穿孔的衍射特性而产生点源。 当相机垂直安装在穿孔上或平行于待检测的墙壁时，这些衍射性质便于从设置于容器内部的照相机获得缺陷的图像。 在另一个实施例中，光源和照相机的相对位置被互换。 结合上述结构也提供了容器检查方法。