High-speed-computational image sensor for detection of 2D motion vector by using single pixel matching

We have been investigating an image sensor in which the 2D motion vector of each pixel is detected at very high frame rates such as those greater than 1000 frames per second. In this sensor, the motion vector is detected by single pixel matching with a limited search range and high inter-frame correlation at a high frame rate. In this paper, we have proposed a new method of on-sensor motion detection for noise reduction and improvement of motion direction accuracy. In this method, we implemented two new functions on the sensor. We fabricated the prototype chip using a 0.35 um CMOS process. Furthermore, we explained the methods for estimating the motion trajectory of this imaging device by using the output from the sensor and for estimating the motion direction of a moving object along the depth direction; these two methods are the applications of this sensor. The simulation results show that the proposed on-sensor motion vector detection is more effective than our previously proposed method.