A high-accuracy circle detection method using a multi-angle rotating equilateral triangle

Opard Kokaphan; Wannida Sae-Tang

doi:10.1117/12.2631797

30 April 2022 A high-accuracy circle detection method using a multi-angle rotating equilateral triangle

Opard Kokaphan, Wannida Sae-Tang

Proceedings Volume 12177, International Workshop on Advanced Imaging Technology (IWAIT) 2022; 1217733 (2022) https://doi.org/10.1117/12.2631797
Event: International Workshop on Advanced Imaging Technology 2022 (IWAIT 2022), 2022, Hong Kong, China

Abstract

Nowadays, visual inspection is widely used in manufacturing industries such as electronic industries, and the most common shape detection is circle detection. Although, there were many methods proposed for circle detection, there is a room to improve the detection accuracy. This paper then proposes a high-accuracy circle detection method using a multiangle rotating equilateral triangle. The main idea is to fit the equilateral triangle into the circle with various rotation angles to select the most accurate circle center. Triangles with various rotation angles are fitted into the circle by iteratively adjusting the ratios of the triangle bases to another sides. The triangles which cannot be adjusted to be equilateral are then discarded, because those isosceles triangles, which occur when a detected triangle corner (s) is not on the circumference but on noises inside the circle, are the cause of inaccurately detected circle centers. The experimental results show that the proposed method is superior to the conventional methods in terms of accuracy and processing time.

Citation Download Citation

Opard Kokaphan and Wannida Sae-Tang "A high-accuracy circle detection method using a multi-angle rotating equilateral triangle", Proc. SPIE 12177, International Workshop on Advanced Imaging Technology (IWAIT) 2022, 1217733 (30 April 2022); https://doi.org/10.1117/12.2631797

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Hough transforms

Image processing

Image segmentation

Image processing algorithms and systems

Detection and tracking algorithms

Linear filtering

Edge detection

Show All Keywords

Keywords/Phrases

Search In:

Publication Years