Share Email Print
cover

Proceedings Paper

Sub-pixel location of center of target based on Zernike moment
Author(s): Bo Liang; Mingli Dong; Jun Wang; Bixi Yan
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

To achieve high location accuracy, a sub-pixel location method based on Zernike moment is proposed for the location of the center of target. Original images are preprocessed to weaken the effect of noise. Sub-pixel edge detection is implemented using Zernike moment. The center of target is located using an ellipse fitting algorithm. Some criterions such as grayscale, area and circular degree of the objects are used to recognize the target simultaneously. Experiments are carried out with synthetic image and real image to verify the accuracy and noise immunity of the proposed method. Experimental results show that the accuracy is better than 1/25 pixel. It can therefore be concluded that the method can be used to meet the requirement of high-accuracy measurement.

Paper Details

Date Published: 31 December 2010
PDF: 6 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75443A (31 December 2010); doi: 10.1117/12.885811
Show Author Affiliations
Bo Liang, Beijing Information Science and Technology Univ. (China)
Mingli Dong, Beijing Information Science and Technology Univ. (China)
Jun Wang, Beijing Information Science and Technology Univ. (China)
Bixi Yan, Beijing Information Science and Technology Univ. (China)


Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

© SPIE. Terms of Use
Back to Top