Recovery of Watermarks from Distorted Images | Zendy

Neil F. Johnson | Zendy; Zoran Đurić | Zendy; Sushil Jajodia | Zendy

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Recovery of Watermarks from Distorted Images

Author(s) -

Neil F. Johnson,

Zoran Đurić,

Sushil Jajodia

Publication year - 2000

Publication title -

lecture notes in computer science

Language(s) - English

Resource type - Book series

SCImago Journal Rank - 0.249

H-Index - 400

eISSN - 1611-3349

pISSN - 0302-9743

ISBN - 3-540-67182-X

DOI - 10.1007/10719724_22

Subject(s) - computer science , digital watermarking , computer vision , artificial intelligence , affine transformation , salient , rotation (mathematics) , digital image , image (mathematics) , identification (biology) , pattern recognition (psychology) , image processing , mathematics , botany , pure mathematics , biology

Many techniques for watermarking of digital images have appeared in numerous publications. Most of these techniques are sensitive to cropping and/or affine distortions (e.g., rotation and scaling). In this paper we describe a method for the recovery of original size and appearance of images based on the concept of identification marks (“fingerprints”); the method does not require the use of the “original” image, but only a small number of salient image points. We show that, using our method, it is possible to recover original appearances of distorted images. The restored image can be used to recover embedded watermarks.

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