---
title: "An Automatic Position Recognition Technique for LSI Assembly"
authors:
  - "Michihiro Mese"
  - "Takafumi Miyatake"
  - "Seiji Kashioka"
  - "Masakazu Ejiri"
  - "Isamu Yamazaki"
  - "Toshimitsu Hamada"
doi: ""
url: "https://ijcai.org/proceedings/1977/162"
pdf: "https://ijcai.org/proceedings/1977/0162.pdf"
venue: "Proceedings of the Fifth International Joint Conference on Artificial Intelligence"
year: 1977
pages: "685-692"
track: "Vision"
keywords:
---

# An Automatic Position Recognition Technique for LSI Assembly

Michihiro Mese, Takafumi Miyatake, Seiji Kashioka, Masakazu Ejiri, Isamu Yamazaki, Toshimitsu Hamada

*Proceedings of the Fifth International Joint Conference on Artificial Intelligence*, pages 685-692.

## Abstract

A ·fully automatic LSI wire-bonding system utilizin g image processing techniques is described. The position recognition system developed is composed of measuring stations, a reco g nition device, a minicomputer, and cassette t a pe-recorders. The position of the bonding pad is found, generally in real-time, by the recognition device and computer. The computer calculates positional data of all bonding pads and s tores them on a cas s ette tape for a subsequent wire-bonding process. The position recognition me thods discussed are composed of a thresholding al g orithm and a position-finding algorithm. Th e se methods are evaluated from the viewpoint of thresholding stability, recognition rate and positional accuracy.