ABSTRACT
Time-of-flight (TOF) range imaging is a three-dimensional (3D) imaging method with moderate accuracy and simple configuration. In the past 20 years, great progress has been made in TOF range imaging. There are two methods for measuring the TOF: direct and indirect. In the direct TOF measurement, the TOF is measured directly in a time domain, and a semiconductor device-the so-called single photon avalanche diode-has enabled all electronic range cameras without any mechanically moving components. Indirect TOF range imaging has been realized by the invention of a lock-in pixel with charge-domain demodulation of the modulated light signal. In the indirect TOF measurement, the TOF is converted to a physical quantity and then the range is calculated by the amount of physical quantity modulation
CONTENTS
10.1 Introduction ................................................................................................253 10.2 System Configurations for TOF Range Imaging ...................................254
