公开(公告)号：US20070008522A1

公开(公告)日：2007-01-11

申请号：US10551191

申请日：2004-03-15

申请人： Barry Hill ,  Simon Aldred

发明人： Barry Hill ,  Simon Aldred

IPC分类号： G01N21/88

CPC分类号： G06T7/001 ,  G01N21/455 ,  G01N21/958 ,  G01N2021/9586

摘要： A method of forming a shadowgraph image is described, comprising the steps of illuminating a glazing (52), e.g., a vehicle windscreen, with light from a localised light source (50), said light being expanded and collimated by a lens optical system (54) or a mirror optical system, forming a virtual shadowgraph image of the glazing in a virtual image plane (56), which may be positioned behind or in front of the glazing: and imaging the virtual image onto a CCD camera (62). The glazing may be moving relative to the light source or may be stationary. Furthermore, a method of glazing inspection is described, comprising forming a shadowgraph image as outlined above; processing the shadowgraph image to exclude measurement points corresponding to obscure areas of the glazing as non-valid measurement points: obtaining a processed image by determining an illumination value for each valid measurement point; constructing a reference image by scanning a convolution window point by point over the processed image: and comparing the illumination value of the corresponding point of the reference image.

摘要翻译： 描述了一种形成阴影图像的方法，包括以下步骤：利用来自局部光源（50）的光照亮玻璃窗（52），例如车辆挡风玻璃，所述光被透镜光学系统（...， 54）或镜面光学系统，在可以位于玻璃窗后面或前面的虚拟像平面（56）中形成玻璃窗的虚拟阴影图像，并将虚像映像到CCD照相机（62）上。 玻璃窗可能相对于光源移动或者可以是静止的。 此外，描述了一种玻璃检查方法，包括如上所述形成阴影图像; 处理阴影图像以将对应于玻璃窗的模糊区域的测量点排除为非有效测量点：通过确定每个有效测量点的照明值来获得处理的图像; 通过在处理的图像上逐点扫描卷积窗来构建参考图像;以及比较参考图像的相应点的照明值。

公开(公告)号：US20070036464A1

公开(公告)日：2007-02-15

申请号：US10548661

申请日：2004-03-15

申请人： Barry Hill ,  Simon Aldred

发明人： Barry Hill ,  Simon Aldred

IPC分类号： G06K9/36

CPC分类号： G06T7/0006 ,  G01N21/455 ,  G01N21/958 ,  G01N2021/9586

摘要： A method of determining the optical quality of a glazing which includes at least one area having a reduced light transmission, involves producing a shadowgraph image of the glazing and measuring the illumination of the glazing at a plurality of measurement points arranged in an array extending over the glazing. The deviation in illumination from a desired value at each measurement point is determined and the at least one area of reduced light transmission is omitted from the array of measurement points.

摘要翻译： 一种确定玻璃窗的光学质量的方法，其包括具有降低的光透射率的至少一个区域，涉及产生玻璃窗的阴影图像，并且以布置在阵列上方的阵列中的多个测量点测量玻璃窗的照明 上釉 确定每个测量点处的照明偏差与期望值，并且从测量点阵列中省略减少的光透射的至少一个区域。