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Erschienen in:
2005 | OriginalPaper | Buchkapitel
CCD Camera-Based Range Sensing with FPGA for Real-Time Processing
verfasst von : Chun-Shin Lin, Hyongsuk Kim
Erschienen in: Embedded Software and Systems
Verlag: Springer Berlin Heidelberg
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A depth measurement system that consists of a single camera, a laser light source and a rotating mirror is investigated. The camera and the light source are fixed at position and face a rotating mirror. The laser light is reflected by the mirror and projected to the scene for depth measurement. The camera detects the laser light location on object surfaces through the same mirror. The scan over the measured area is done by mirror rotation. FPGA is used to quickly process the collected images to generate a range image. A 136 × 240 range image can be generated in 2.3 seconds. This speed is 4 times faster than that of a PC with a 2.8GHz clock. If the frame rate can be increased to 300 per second, the speed improvement will be about 15 times. The technology, on the other hand, offers a solution for embedded implementation.