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公开(公告)号：US3740153A
公开(公告)日：1973-06-19
申请号：US3740153D
申请日：1970-10-13
发明人： WOOD W
CPC分类号： G02B27/642 , G06K9/74
摘要： A simple means of detecting a straight line or edge using noncoherent optical techniques. An object is imaged onto a rotating film loop by a lens. The film loop has a number of parallel, equally spaced bars. When a straight line is detected which is parallel to the bars on the rotating film, its presence is indicated by a large signal being emitted by a photodetector.
摘要翻译： 使用非相干光学技术检测直线或边缘的简单手段。 物体通过透镜成像到旋转膜环上。 薄膜回路具有多个平行的等间隔的条。 当检测到与旋转膜上的条平行的直线时，其存在由光电检测器发射的大信号指示。
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公开(公告)号：US3743422A
公开(公告)日：1973-07-03
申请号：US3743422D
申请日：1970-06-18
发明人： WOOD W
摘要： A processing array which permits the simultaneous filtering of a single input image by a number of different spatial frequency filters. A coherent collimated beam of light is divided into a plurality of smaller beams. The smaller beams are then collimated and are directed through a single portion of an input transparency. The beams coming from the input transparency are then directed through a transforming lens which produces the Fourier transform of each of the beams in the focal plane of the transforming lens. Because the Fourier transform of each beam is located at a different position in the Fourier plane, a different filtering operation can be performed at each of the points in the Fourier plane.
摘要翻译： 一种处理阵列，其允许通过多个不同的空间频率滤波器同时对单个输入图像进行滤波。 相干准直光束被分成多个较小的光束。 然后较小的光束被准直并且被引导通过输入透明度的单个部分。 来自输入透明度的光束然后被引导通过变换透镜，该变换透镜在变换透镜的焦平面中产生每个光束的傅立叶变换。 由于每个波束的傅里叶变换位于傅立叶平面中的不同位置，所以可以在傅立叶平面中的每个点执行不同的滤波操作。
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