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
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
Journal title :
Applied Optics
