Center Subpixel Localization of Circular Retro-Reflective Targets

HUANG Guiping

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Volume 30 Issue 5

May 2005

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Article Navigation > Geomatics and Information Science of Wuhan University > 2005 > 30(5): 388-391

HUANG Guiping. Center Subpixel Localization of Circular Retro-Reflective Targets[J]. Geomatics and Information Science of Wuhan University, 2005, 30(5): 388-391.

Citation:

HUANG Guiping. Center Subpixel Localization of Circular Retro-Reflective Targets[J]. Geomatics and Information Science of Wuhan University, 2005, 30(5): 388-391.

Center Subpixel Localization of Circular Retro-Reflective Targets

HUANG Guiping^1,2

¹ State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, 92 Weijin Road, Tianjin 300072, China² Institute of Surveying and Mapping, Information Engineering University, 66 Middle Longhai Road, Zhengzhou 450052, China

Received Date: 2005-02-28
Rev Recd Date: 2005-02-28
Publish Date: 2005-05-05

Abstract

Circle targets made from retro-reflective material(RRT) are introduced. After photographed, the approximate binaried RRT image is gotten. The precise edge position is gotten using subpixel edge detection method. Then, center of RRT is localized precisely by ellipse best fitting. Tests demonstrate that the center is localized in 0.02 pixel.
- measurement based on images,
- retro-reflective targets(RRT),
- edge detection,
- subpixel,
- ellipse best fitting
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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