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Microscopic Image Analysis of Defect Areas in Optical Disks



P L'Hostis, Frederick R. Byers, Fernando L. Podio, Xiao Tang


This paper presents techniques developed in the Information Technology Laboratory of the US National Institute of Standards and Technology (NIST/ITL) for enabling microscopic image analysis of optical data storage media such as optical discs. These non-destructive techniques allow investigators to easily locate on the disc a predetermined series of media defects. The techniques can be applied to any type of optical disks including CDs and DVDs. The paper describes the experimental setup and the techniques utilized to achieve localization and registration of media defects. These techniques include data acquisition, computer control, auto focus, image processing, and remote control and observation. An extension of this setup utilizing available graphical programming environments can allow investigators at different locations to share and discuss the information of media defects by use of the Internet.
SPIE International Society for Optical Engineering


CD, data storage, DVD, media defects analysis, microscopic defect analysis, microscopic image processing, optical disks measurements


L'Hostis, P. , Byers, F. , Podio, F. and Tang, X. (1999), Microscopic Image Analysis of Defect Areas in Optical Disks, SPIE International Society for Optical Engineering, [online], (Accessed June 14, 2024)


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Created June 30, 1999, Updated October 12, 2021