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1. 发明授权

US5094538A Digitizing the surface of an irregularly shaped article 失效
标题翻译：对非正式形状文章的表面进行数字化处理
公开(公告)号：US5094538A
公开(公告)日：1992-03-10
申请号：US598003
申请日：1990-10-10
申请人： David C. Reedman , Peter M. Witty , Stephen J. Marshall , Hugh G. Sasse
发明人： David C. Reedman , Peter M. Witty , Stephen J. Marshall , Hugh G. Sasse
IPC分类号： A43D1/04 , G05B19/42 , H04N13/00
CPC分类号： G06T7/0057 , A43D1/04 , G05B19/4207 , G05B2219/37554 , G05B2219/45243 , H04N13/0242 , H04N13/0253 , H04N2013/0081
摘要： An optical system and method for digitizing a last or other irregularly shaped article comprises a laser device fixed on a base directing a light beam at a last supported for rotation about an axis, perpendicular to which the light beam is directed. Two cameras are fixed to the base, one at each side of the laser device, and each comprises an array of cells for detecting the point of incidence of the light beam on the last surface. As the last is rotated, the point of incidence varies in relation to a datum, e.g. the axis of rotation, and the point maximum intensity of illumination on the array of cells will vary across the array accordingly. By a correlating technique, the distance of the point of incidence from the datum can be determined according to the point of maximum intensity of the array. Thus, for digitizing the last, it is necessary merely to rotate it and also move it in a direction along its length for a large number of point positions to be detected, these being then stored as digitized coordinate axis value (R-theta-z). Because the last is an irregularly shaped object, in certain circumstances it is necessary to provide more digitized point positions than in other areas. These are all catered for either by flagging for a subsequent in-fill operation or by back-stepping over reduced angles of rotation of the last.
摘要翻译：为了数字化最后的或其他不规则形状的制品，使用光学系统，其包括固定在机器基座（10）上的激光装置（14），并且引导最后支撑的光束围绕垂直于该光的轴线旋转光束被导向。两个摄像机（16）也固定到基座，一个在激光装置的每一侧，每个包括用于检测最后表面上的光束的入射点的单元阵列。当最后一个旋转时，入射点将相对于基准变化，例如，旋转轴线和单元阵列上的最大照明强度点将相应地在阵列上变化。通过相关技术，可以根据阵列上的最大强度点来确定入射点距离原点的距离。因此，为了数字化最后一个，仅需要旋转它并且还将其沿着其长度的方向移动以用于待检测的大量点位置，然后将它们存储为数字坐标轴值（R-θ-Z ）。因为最后一个是不规则形状的物体，在某些情况下，有必要提供比其他区域更多的数字化点位置。需要更大清晰度的区域是最后一个底部的边界点，高曲率区域和“长弧”区域（即，由于光束到最后一个表面的角度，连续入射点之间的距离是大）。这些都是通过标记后续填充操作或通过反转最后一个旋转角度的方式来满足的。

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