---
title: "Edge Finding, Segmentation Of Edges And Recognition Of Complex Objects"
authors:
  - "Yoshiaki Shirai"
doi: ""
url: "https://ijcai.org/proceedings/1975/107"
pdf: "https://ijcai.org/proceedings/1975/0107.pdf"
venue: "Proceedings of the Fourth International Joint Conference on Artificial Intelligence"
year: 1975
pages: "674-680"
track: "Visual Information Processing"
keywords:
---

# Edge Finding, Segmentation Of Edges And Recognition Of Complex Objects

Yoshiaki Shirai

*Proceedings of the Fourth International Joint Conference on Artificial Intelligence*, pages 674-680.

## Abstract

This paper describes an approach to the recognition of real-world objects such as books or a telephone on a desk. The system consists of (1) edge finding process which extracts edges of curved objects from light intensity data, (2) segmentation of the edges into straight lines or elliptic cur ves, (3) recognition of objects by mat ching the lines to the models, and (4) simple supervisor. The modu le (1), ( 2 ) and (3) interact with each othe r thr o ugh a simple supervisor so that the system can locate given objects quickly. First, most reliable edges are found and segmented, and then recognition i s attempted using segmented lines. If recogniti on is not successful, less reliable edges are searched for, and recognition is retried. An example of l oc ating a lamp, a book stand and a telephone is sho wn.