By Topic

Design and implementation of real-time 3-D image sensor with 640 × 480 pixel resolution

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Oike, Y. ; Dept. of Electron. Eng., Univ. of Tokyo, Japan ; Ikeda, M. ; Asada, K.

In this paper, the first real-time range finder with the capability of VGA (640 × 480) resolution based on the light-section method is presented. We propose an adaptive thresholding circuit and column-parallel time-domain approximate analog-to-digital converters to realize high-speed readout for real-time range finding. Sub-pixel position calculation based on intensity profile achieves high-accuracy range finding. A column-parallel position detector suppresses redundant data transmission for a real-time measurement system. A 640 × 480 range finder using these techniques has been developed and successfully tested. The maximum range finding speed is 65.1 range_maps/s. The maximum range error is 0.87 mm and the standard deviation of error is 0.26 mm at 1200-mm distance. We have acquired a two-dimensional image and a high-resolution three-dimensional (3-D) image by the 3-D measurement system using our range finder.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:39 ,  Issue: 4 )