Release Time:2019-03-11  Hits:

Indexed by: Conference Paper

Date of Publication: 2008-07-16

Included Journals: Scopus、CPCI-S、EI

Page Number: 235-238

Key Words: Auto-focusing; Sharpness-evaluation-function; Auto-tracking; LIF

Abstract: Improving the detect efficiency of confocal LIF device by using auto-focusing and tracking method, based on image processing. The Laplacian Sharpness-evaluation-function and three image difference methods were used to calculate relative position between lens and object in the LIF system and implement auto-focusing and tracking. The experimental results shown that Laplacian Sharpness-evaluation-function as evaluation function could give optimal focus point. Take coarse-to-precise method to satisfying the both requirement of accuracy and velocity in the auto-focusing.