Multi functional range finder employing a dual imager core on a single chip

This paper presents a multi functional range finder employing dual imager core on a single chip. With a combination of the light-section method and the stereo-matching method, our range finder achieves three modes, which are 2-D imaging mode, high speed 3-D imaging mode and high accuracy 3-D imaging mode. In 2-D imaging mode, 8 bit gray scale imaging speed is 58 fps, in high speed imaging mode, maximum frame rate is 24.8 range maps/s and in high accuracy 3-D imaging mode, maximum range error is 1.619 mm at 700 mm and the standard deviation of measured error is 0.385 mm. Our range finder adopts and can be used selectively according to the circumstances.