[Paper] Time-of-flight Range Image Sensor Based on Exposure Coding with a Multi-aperture Imaging System

Abstract

A three-dimensional measurement scheme based on a time-of-flight method using a multi-aperture image capturing system is proposed. Temporal coding of exposure time for each aperture is individually provided by equipping an electronic shutter controller for every sub block of a pixel array in an image sensor. The measurement frequency is enhanced by capturing multiple temporally coded images simultaneously. The results of preliminary experiments for confirming measurement of the phase of optical signal modulated at a higher frequency than the frame rate of the image sensor are presented.