Three Dimensional Image Sensor for Real Time Application Based on Triangulation
نویسندگان
چکیده
Abstract A real-time 3-D image sensor with VGA (640 × 480) resolution based on triangulation is presented. The sensor employs an adaptive thresholding circuit and column-parallel time-domain approximate ADCs to realize high-speed readout for real-time range finding. Sub-pixel position calculation based on intensity profile by the readout scheme achieves high-accuracy range finding. A column-parallel position detector suppresses redundant data transmission for a real-time measurement system. A real-time 3-D imaging system integrated with the present sensor has been developed and successfully demonstrated. Moreover a row-parallel range finding sensor is also presented for 1000 range maps/s. Keyword: Three dimentional image sensor, real time, VGA, lightsection method, triangulation
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