18 search results - page 2 / 4 » Detecting multiple copies in tampered images |
PAMI
2008
13 years 5 months ago
2008
This paper develops a theory of frequency domain invariants in computer vision. We derive novel identities using spherical harmonics, which are the angular frequency domain analog ...
ICIP
2005
IEEE
14 years 7 months ago
2005
IEEE
We introduce a set theoretic framework for watermarking and illustrate its effectiveness by designing a hierarchical semi-fragile watermark that is tolerant to compression and all...
ICIP
2009
IEEE
14 years 6 months ago
2009
IEEE
This paper examines whether machine learning and image analysis tools can be used to assist art experts in the authentication of unknown or disputed paintings. Recent work on this...
ECCV
2006
Springer
14 years 7 months ago
2006
Springer
Abstract. We develop new mathematical results based on the spherical harmonic convolution framework for reflection from a curved surface. We derive novel identities, which are the ...
SSWMC
2004
13 years 7 months ago
2004
Identity documents, such as ID cards, passports, and driver's licenses, contain textual information, a portrait of the legitimate holder, and eventually some other biometric ...