A Improved Subpixel Edge Detecting Algorithm Based on Polynomial Interpolation

LI Qingli; ZHANG Shaojun; LI Zhongfu; BAI Yinjiu; JIN Jian; GOU Zhongkui

doi:10.13374/j.issn1001-053x.2003.03.050

Volume 25 Issue 3

Aug. 2021

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Engineering > 2003 > 25(3): 280-283

LI Qingli, ZHANG Shaojun, LI Zhongfu, BAI Yinjiu, JIN Jian, GOU Zhongkui. A Improved Subpixel Edge Detecting Algorithm Based on Polynomial Interpolation[J]. Chinese Journal of Engineering, 2003, 25(3): 280-283. doi: 10.13374/j.issn1001-053x.2003.03.050

Citation:

LI Qingli, ZHANG Shaojun, LI Zhongfu, BAI Yinjiu, JIN Jian, GOU Zhongkui. A Improved Subpixel Edge Detecting Algorithm Based on Polynomial Interpolation[J]. Chinese Journal of Engineering, 2003, 25(3): 280-283. doi: 10.13374/j.issn1001-053x.2003.03.050

Citation:

PDF( 448 KB)

A Improved Subpixel Edge Detecting Algorithm Based on Polynomial Interpolation

doi: 10.13374/j.issn1001-053x.2003.03.050

1. Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. Tangshan College, Tangshan 063000, China

Received Date: 2001-10-11
Available Online: 2021-08-17

Abstract

Abstract

A improved subpixel edge detecting algorithm based on polynomial interpolation, masks and calculating formulae is introduced, the error cause of the operator is analyzed, and the error formula is derived. The algorithm uses direction masks based on classical Sobel masks in converting gray into gradient images and applies the polynomial interpolation to subpixel edge detecting at the gradient direction of edge on gradient images. Some examples are presented to demonstrate the effectiveness of the method.
- subpixel,
- imaging measurement,
- accuracy,
- edge detection,
- image segmentation