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

被引：30

作者：

Oike, Y

Ikeda, M

Asada, K

机构：

[1] Univ Tokyo, Dept Elect Engn, Tokyo 1138656, Japan

[2] Univ Tokyo, VLSI Design & Educ Ctr, Tokyo 1138656, Japan

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2004年 / 39卷 / 04期

关键词：

high resolution; light-section method; position sensor; range finding; real time; three-dimensional image sensor; VGA;

D O I：

10.1109/JSSC.2004.825122

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, the first real-time range finder with the capability of VGA (640 x 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 x 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.

引用

页码：622 / 628

页数：7

共 5 条

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[3]

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[5]

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