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Title: Height measurement of microchip connecting pins by use of stereovision
Authors: Tay, C.J. 
Kang, X. 
Quan, C. 
He, X.Y.
Shang, H.M. 
Issue Date: 1-Jul-2003
Citation: Tay, C.J.,Kang, X.,Quan, C.,He, X.Y.,Shang, H.M. (2003-07-01). Height measurement of microchip connecting pins by use of stereovision. Applied Optics 42 (19) : 3827-3831. ScholarBank@NUS Repository.
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-focal-length lenses and a two-channel digital image grabber, is capable of in situ measurement. © 2003 Optical Society of America.
Source Title: Applied Optics
ISSN: 00036935
Appears in Collections:Staff Publications

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