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公开(公告)号：US5305391A
公开(公告)日：1994-04-19
申请号：US761524
申请日：1991-09-18
申请人： Tadashi Gomibuchi
发明人： Tadashi Gomibuchi
CPC分类号： G01N21/9045 , G01N21/8851 , G06T7/0006 , G01N2021/8887 , G06T2207/20148 , G06T2207/30164
摘要： A method of and an apparatus for inspecting a bottle or the like by which the presence or absence of a defect, particularly a check, can be determined with a high degree of accuracy. Light is irradiated upon an inspection area of a rotating or moving object, and reflected light is photographed by a two-dimensional camera which includes solid-state image pickup elements. Picture element data for a first frame are fetched at a first point of time from the two-dimensional camera and stored into a memory, and then picture element data for a second frame are fetched at a second point of time after a fixed interval of time after the first point of time. Then, differences of the picture element data for the second frame from the picture element data for the first frame from the memory are taken and binary digitized with reference to predetermined brightness threshold level, and the differences which have one of two binary values are counted. The count number is compared with a predetermined number to determine the presence or absence of a defect in the object being inspected.
摘要翻译： 用于检查瓶子等的方法和装置，通过该方法可以高精度地确定是否存在缺陷，特别是支票。 光照射到旋转或移动物体的检查区域，并且通过包括固态图像拾取元件的二维照相机拍摄反射光。 第一帧的图像元素数据在从二维相机的第一时间点获取并存储到存储器中，然后在固定的时间间隔之后的第二时间点获取第二帧的图像元素数据 第一时间点后。 然后，对于第二帧的图像元素数据与来自存储器的第一帧的像素数据的差异，参照预定的亮度阈值电平进行二进制数字化，并计数具有两个二进制值之一的差值。 将计数值与预定数量进行比较，以确定被检查物体中是否存在缺陷。
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公开(公告)号：US4850696A
公开(公告)日：1989-07-25
申请号：US171083
申请日：1988-03-21
CPC分类号： G01M3/36
摘要： A vacuum degree inspecting device wherein a high degree of accuracy is not required for positioning of an object vessel and the degree of vacuum of an object vessel can be detected with a high S/N ratio under a reduced influence of fluctuations in size or configuration of a top (lid) wall of an object vessel. The device comprises a great diameter lens for refracting rays of light from a light source into rays of light to be irradiated upon an area including a lid wall of a sealed up vessel held at a predetermined inspection position, a beam splitter for passing part of rays from the great diameter lens therethrough and for reflecting reflected rays from the lid wall of the sealed up vessel, a condenser lens for condensing reflected rays from the beam splitter, an image sensor for detecting the thus condensed rays, and a comparator circuit for comparing an output voltage of the image sensor with a reference voltage to develop a signal representing that the sealed up vessel is acceptable or to be rejected.
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