Fast 3D position measurement with two unsynchronized cameras

Author

Fujiyoshi, Hironobu ; Shimizu, Shouichi ; Nishi, Takayuki ; Nagasaka, Y. ; Takahashi, Tomoichi

Author_Institution

Dept. of Comput. Sci., Chubu Univ., Japan

Volume

3

fYear

2003

fDate

16-20 July 2003

Firstpage

1239

Abstract

Stereo vision systems have been proposed and used in various fields. They require cameras to synchronize with each other for tracking objects. In this paper, we present a vision system, which uses two normal, unsynchronized cameras for calculating the 3D position of objects. The unsynchronization in shutter timing of cameras is used to process more images per second than a synchronized camera system. 3D positions of an object are measured as a crossing point of lines in 3D through the detected position on the latest frame and estimated 3D position calculated by fast frames. This makes it possible for our system to consist of two unsynchronized cameras and allows for a PC to calculate the 3D position of the moving object at 60 fps. This can be useful for controlling a robot as a fast visual feedback system.

Keywords

cameras; feedback; position measurement; robot vision; stereo image processing; 3D position measurement; 60 ft/s; shutter timing; unsynchronization; unsynchronized cameras; vision system; visual feedback system; Cameras; Control systems; Feedback; Machine vision; Object detection; Position measurement; Robot control; Robot vision systems; Stereo vision; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Intelligence in Robotics and Automation, 2003. Proceedings. 2003 IEEE International Symposium on

Print_ISBN

0-7803-7866-0

Type

conf

DOI

10.1109/CIRA.2003.1222174

Filename

1222174