Machine vision inspection system and method for performing high-speed focus height measurement operations

作者: Paul Gerard Gladnick

DOI:

关键词: Focus (computing)Image stackEngineeringArtificial intelligenceField of viewComputer visionMachine visionPosition (vector)Phase (waves)Region of interest

摘要: A machine vision inspection system comprising an illumination source and imaging a method for performing high-speed focus height measurement operations. The comprises: placing (1010) workpiece in field of view the system; determining (1020) region interest operations; operating (1030) to illuminate with strobed illumination; periodically modulating (1040) position along Z-height direction proximate workpiece; collecting (1050) image stack, wherein each stack corresponds instance matched phase modulated corresponding appropriate Z within stack; (1060) at least one portion interest.

参考文章(23)
Paul G. Gladnick, Kim W. Atherton, Richard M. Wasserman, Systems and methods for rapidly automatically focusing a machine vision inspection system ,(2004)
Alexandre Mermillod-Blondin, Euan McLeod, Craig B. Arnold, High-speed varifocal imaging with a tunable acoustic gradient index of refraction lens Optics Letters. ,vol. 33, pp. 2146- 2148 ,(2008) , 10.1364/OL.33.002146
Jan-Mark Geusebroek, Frans Cornelissen, Arnold W.M. Smeulders, Hugo Geerts, Robust autofocusing in microscopy Cytometry. ,vol. 39, pp. 1- 9 ,(2000) , 10.1002/(SICI)1097-0320(20000101)39:1<1::AID-CYTO2>3.0.CO;2-J
Mathew David Watson, Surface height and focus sensor ,(2007)
Robert K. Bothell Bryll, Michael M. Kirkland Nahum, System and method for fast approximate focus ,(2008)