Title of article
Height Measurement of Microchip Connecting Pins by Use of Stereovision
Author/Authors
Quan، Chenggen نويسنده , , Tay، Cho Jui نويسنده , , Kang، Xin نويسنده , , He، Xiao Yuan نويسنده , , Shang، Huai Min نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
-3826
From page
3827
To page
0
Abstract
A stereovision method for estimating the height of connecting pins on a microchip is described. The technique uses a centroidal method to simplify the calculation. A few seconds are required for a Pentium 586 PC to calculate the heights of 300 connecting pins on a 50 mm * 50 mm microchip. The method is described, and experimental results are presented. The optical system, which consists of two CCD cameras with long-focallength lenses and a two-channel digital image grabber, is capable of in situ measurement
Keywords
Spectral density function , Estimation , Bias , harmonizable functions , cyclostationary , Consistency , Doppler , multipath , covariance , aliasing
Journal title
Applied Optics
Serial Year
2003
Journal title
Applied Optics
Record number
76286
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