Tang, X.
, L'Hostis, P.
and Xiao, Y.
(2000),
An Auto-Focusing Method in Microscopic Testbed for Optical Discs, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD
(Accessed October 31, 2024)
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An Auto-Focusing Method in Microscopic Testbed for Optical Discs
Published
Author(s)
, P L'Hostis, Y Xiao
Abstract
An auto-focusing method is described and practically applied to an optical disc test-bed. In this application, an optical microscope was used to create clear pit images of optical discs. A CCD camera generated the graphic signals for the images. A standard deviation value of the gray levels for all pixels in the image is used as a feedback for auto-focusing control. The performance and possible applications of this method are discussed and test results for optical discs are given in this paper.Citation
Journal of Research (NIST JRES) -
Volume
105 No. 4
NIST Pub Series
Pub Type
NIST Pubs
Keywords
auto-focus, disc testbed, optical discs, standard deviation
Citation
Issues
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Created July 1, 2000, Updated February 17, 2017