✦ LIBER ✦

A stereo vision system for the inspection of IC bonding wires

✍ Scribed by Q. Z. Ye; S. H. Ong; X. Han

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 199 KB
Volume: 11
Category: Article
ISSN: 0899-9457
DOI: 10.1002/ima.1010

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

We describe a novel inspection system based on the application of the stereo technique to the detection of defects related to the three‐dimensional (3D) profile of IC wire bonds. In our single‐camera–based setup, stereo views are obtained by rotating the IC chip under the CCD camera with a telecentric lens. The edges of the wires are detected using Petrou's line filter and the facet model applied to obtain subpixel edge localization. After linking edges to form meaningful curves, stereo matching is conducted between the two curve lists of a stereo pair. The height profiles of the wire bonds are obtained using the disparity equation derived from the imaging geometry. © 2001 John Wiley & Sons, Inc. Int J Imaging Syst Technol 11, 254–262, 2000

📜 SIMILAR VOLUMES

Real-time Analysis of an IC Wire-bonding

Real-time Analysis of an IC Wire-bonding Inspection System

✍ M. Rajeswari; M.G. Rodd 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 264 KB

Real-time Analysis of an IC Wire-bonding Inspection System T hough the need to consider all aspects of real-time in the development of a system is not new to control engineers, they are relatively new to the machine vision specialists, especially as they tend to come from various dierent backgrounds

Study on the critical conditions of ice

Study on the critical conditions of ice formation for a continuous ice making system in a cooling pipe

✍ Inaba, Hideo ;Lee, Dong Won ;Horibe, Akihiko 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 126 KB 👁 2 views

This paper deals with a continuous ice making method which could be used to provide an ice storage system using off-peak electricity during nighttime. The critical condition for an ice blockage to occur in the cooling tube has been examined in terms of the concentration of water-propylene glycol sol

Toward a general protocol for the study

Toward a general protocol for the study of static and dynamic properties of hydrogen-bonded systems

✍ Vincenzo Barone; Carlo Adamo 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 260 KB 👁 2 views

We report a critical assessment of the building blocks constituting a general protocol for the study of the structure, strength, and kinetics of hydrogen bridges in large biological systems. The potentialities of self-consistent hybrid approaches for computing reliable potential energy surfaces are

Synthesis and Reaction of Secondary and

Synthesis and Reaction of Secondary and Primary Diorganozinc Reagents Using a Boron—Zinc Exchange Reaction. A Useful Method for the Stereo- and Regioselective Formation of New Carbon—Carbon Bonds

✍ Eike Hupe; M. Isabel Calaza; Paul Knochel 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 56 KB 👁 1 views

The delineation of drainage basins on th

The delineation of drainage basins on the Greenland ice sheet for mass-balance analyses using a combined modelling and geographical information system approach

✍ R. J. Hardy; J. L. Bamber; S. Orford 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 768 KB

The MoT-ICE: A New High-Resolution Wave-

The MoT-ICE: A New High-Resolution Wave-Propagation Algorithm for Multidimensional Systems of Conservation Laws Based on Fey's Method of Transport

✍ Sebastian Noelle 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 351 KB

Fey's Method of Transport (MoT ) is a multidimensional flux-vector-splitting scheme for systems of conservation laws. Similarly to its one-dimensional forerunner, the Steger-Warming scheme, and several other upwind finite-difference schemes, the MoT suffers from an inconsistency at sonic points when