---
title: "Detection of Elliptic and Linear Edges by Searching Two Parameter Spaces"
authors:
  - "Saburo Tsuji"
  - "Fumio Matsumoto"
doi: ""
url: "https://ijcai.org/proceedings/1977/167"
pdf: "https://ijcai.org/proceedings/1977/0167.pdf"
venue: "Proceedings of the Fifth International Joint Conference on Artificial Intelligence"
year: 1977
pages: "700-704"
track: "Vision"
keywords:
---

# Detection of Elliptic and Linear Edges by Searching Two Parameter Spaces

Saburo Tsuji, Fumio Matsumoto

*Proceedings of the Fifth International Joint Conference on Artificial Intelligence*, pages 700-704.

## Abstract

The Hough transformation can detect straight lines in an edge-enhanced picture; however, its extension to recover ellipses requires too much computing time. This paper proposes a modified method which utilizes two properties of an ellipse in such a way that it iteratively searches for clusters in two different parameter spaces to find visible ellipses, then evaluates their parameters by the least means squares method.