Mr. Hans Oltmans
Security Document Consultant at
SPIE Involvement:
Author
Area of Expertise:
document security , anti-counterfeiting , image processing
Publications (2)

PROCEEDINGS ARTICLE | February 9, 2006
Proc. SPIE. 6075, Optical Security and Counterfeit Deterrence Techniques VI
KEYWORDS: Image compression, Data storage, Data hiding, Image processing, Scanners, Image resolution, Digital watermarking, Image registration, Printing, Binary data

PROCEEDINGS ARTICLE | June 3, 2004
Proc. SPIE. 5310, Optical Security and Counterfeit Deterrence Techniques V
KEYWORDS: Image compression, Modulation, Image processing, Fourier transforms, Image resolution, Computer programming, Printing, Digital imaging, Halftones, Information security

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