High-speed and high-accuracy position sensor for 3-D measurement using row parallel processing on the sensor plane

摘要

In the 3-D measurement system using light projection, the sensor detects the position of the projected light on tire sensor plane. The 3-D measurement system using shoot light projection can decrease frames per range hint), Inn their tire system has lower accuracy than that using spot light projection when the positions are calculated from a binary image. In this paper, we present a method of high-speed and high-accuracy position detection using row parallel processing for real time 3-D measurement. The row parallel position detection on the sensor plane can realize high frame rate and acquire the contrast of tire projected light duo to searching repeatedly in one frame. By the simulation results using 0.6 μm CMOS process, the frame time to acquire the position of the projected shoot light is about 17.8 μs and the sub-pixel accuracy is loss than 0.1 pixel when the sensor has 256 × 256 pixels.