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- W2078581636 abstract "This paper describes a visual inspection system for factory automation. The system is based on a multi-directional 3-Dimager.Three dimensional object recognition has become increasingly important in factory automation. For example, automaticassembly of printed circuit (PC) boards can use a 3-D visual inspection system to detect incorrectly assembled devices. To beeffective, measurement should be done from more than one angle.A visual inspection system has been developed based on a multi-directional 3-D imager and laser cross scanning. It canobtain range and intensity information of objects simultaneously. Range measurement is based on laser triangulation using aposition sensitive detector.The system features: (1) Multi-directional 3-D measurement. The quad 3-D imager and X-Y laser scanner enablemulti-directional 3-D measuremenL (2) High-speed. Measurement speed is 1 million pixels per second. Each pixel containsdata for 256-height-level range and 256-gray-level intensity. One quad flat package with 160 leads can be measured in 4seconds. (3) High-resolution. The inspection resolution is 25 jim in the X and Y directions and 30 pm in the Z direction.The visual inspection system uses the 32-bit MC68030 and 12 megabytes of image memory. The system was capable ofdetecting missing, shifting, and floating leads, and solderjoint defects." @default.
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- W2078581636 date "1991-01-01" @default.
- W2078581636 modified "2023-09-23" @default.
- W2078581636 title "Visual inspection system using multidirectional 3-D imager" @default.
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- W2078581636 doi "https://doi.org/10.1117/12.51082" @default.
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