Inspection method and inspection system of surface of article
AssigneeDowa Mining Co., Ltd.
InventorsTakashi Ujihara, Hirotoshi Inomata, Isao Fujita
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Abstract
The present invention is a method for inspecting a surface of an article through an image thereof by photographing a surface to be inspected of the article with a CCD camera, in which the surface of the article is inspected by selecting two arbitrary pixels from among pixels showing the surface to be inspected in the image and comparing the two pixels. When the two pixels are selected, for example, pixels in point-symmetry or line symmetry can be selected. Further, the two selected pixels are compared, for example, in brightness.
Claims8
A method for inspecting a surface of an article through an image thereof, comprising the steps of:
- photographing a surface to be inspected of said article with a CCD camera;
- selecting two arbitrary pixels from among pixels showing the surface to be inspected in the image;
- and
- comparing the two pixels to inspect the surface of said article.
A system for inspecting a surface of an article through an image thereof, comprising:
- a light source for illuminating a surface to be inspected of said article;
- a CCD camera for photographing the surface to be inspected of said article;
- and
- a controller for selecting two arbitrary pixels from among pixels showing the surface to be inspected in the photographed image and comparing the two pixels to inspect the surface of said article.
Dependencies are inferred from the claim text.