New Technology for a New Century
International Conference 
FIG Working Week 2001, Seoul, Korea 6–11 May 2001

Abstracts

Key words: 

This study aims to present extracting the three dimensional positions and precision measurements of Object's surface roughness using stereo digital image data obtained from a high resolution DCS 420 digital camera.

For real-time processing, a primary window operating roughness measurement system was constructed by means of Visual basic 6.0 in windows.

This system is composed of six modules; image edit, control point survey, bundle adjustment, automatic matching, three dimensional positions generation , and roughness measurements.

As the analysis results of measurement accuracy of digital camera using this system, the roughness error of the normal distance between the best fitting reference surface obtained by least square method and sample points in the ideal plane or surface did not exceed ±0.1mm

CONTACT

Hyosung Lee
Post Doctor course
Department of Civil, Urban & Geo-Systems Engineering
Seoul National University
Shillim Dong
Gwanak Gu
Seoul
KOREA
Tel. + 82 2 880 7371
Fax + 82 2 889 0032
E-mail: Hyosunglee@hanmail.net

Yangdam Eo
Post Doctor course
School of Civil Engineering
Department of Civil Engineering
Purdue University
USA
Tel. + 1 765 463 1917
E-mail: eo@purdue.edu

Assoc. Prof. Yongil Kim
School Civil, Urban & Geo-Systems Engineering
Seoul National University
Shillim Dong
Gwanak Gu
Seoul
KOREA
Tel. + 82 2 880 7364
Fax + 82 2 889 0032
E-mail: yik@snu.ac.kr

Professor Kiwon Ahn
School of Civil Engineering
Gyeongsang National University
Gajwa Dong
Chinju
Gyeongnam
KOREA
Tel. + 82 55 751 5380
Fax + 82 55 758 8502
E-mail: kwahn@nongae.gsnu.ac.kr

23 March 2001

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