A 64 x 64 CMOS image sensor with on-chip moving object detection and localization

• Main Authors: Zhao, Bo, Zhang, Xiangyu, Chen, Shoushun, Low, Kay-Soon, Zhuang, Hualiang
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/102778; http://hdl.handle.net/10220/16450
• Institution: Nanyang Technological University

This paper presents a 64×64 CMOS image sensor with on-chip moving object detection and localization capability. Pixel-level storage elements (capacitors) enable the sensor to simultaneously output two consecutive frames, with temporal differences digitalized into binary events by a global differentiator. An on-chip, hardware-implemented, clustering-based algorithm processes events on the fly and localizes up to three moving objects in the scene. The sensor can automatically switch to region of interest mode and capture a picture of the object. The proposed image sensor was implemented using UMC 0.18 μm CMOS technology with a die area of 1.5 mm × 1.5 mm, and power consumption was only 0.4 mW at 100 FPS.