Limitation of Edge Location

Author

Liu, Yonglu ; Shao, Longtan ; Li Yao

Author_Institution

Dept. of Phys., Dalian Univ. of Technol.

Volume

2

fYear

0

fDate

0-0 0

Firstpage

5236

Lastpage

5240

Abstract

Triaxial test is an important test in civil engineering. Soil specimen deformation needs edge location in triaxial test. Edge location accuracy has the limitation. The accuracy limitation is greater than 0.2 pixels by mathematical reasoning. In order to obtain high resolution of edge location, an improved test method is adopted to solve the limitation of edge location. According to the new test method, we take advantage of subpixel corner detection algorithm to locate the edge. Test results show that the accuracy is improved by five times than the old method. After long-term test, the radial accuracy steadily reaches 0.02 pixels and the axial accuracy steadily reaches 0.05 pixels

Keywords

civil engineering computing; edge detection; testing; axial accuracy; civil engineering test; edge location accuracy limitation; radial accuracy; soil specimen deformation; subpixel corner detection; triaxial test; Biomembranes; Cameras; Civil engineering; Detection algorithms; Image edge detection; Image processing; Laboratories; Physics; Soil measurements; Testing; Corner detection; Limitation of edge location; Sub-pixel;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on

Conference_Location

Dalian

Print_ISBN

1-4244-0332-4

Type

conf

DOI

10.1109/WCICA.2006.1714067

Filename

1714067