Height measurement of microchip connecting pins by use of stereovision.
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 x 50 mm microchip. The method is described, and experimental results are presented. The optical system, which consists of two CCD cameras with long-focal-length lenses and a two-channel digital image grabber, is capable of in situ measurement.
Tay
Cho Jui
CJ
Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260. mpetaycj@nus.edu.sg
Kang
Xin
X
Quan
Chenggen
C
He
Xiao Yuan
XY
Shang
Huai Min
HM