Please use this identifier to cite or link to this item:
Title: An improved watermarking algorithm using variable block image features
Authors: Dagher, Issam 
Hanna, Patrick
Affiliations: Faculty of Engineering 
Keywords: Decimal Sequences
Harris detector
Variable block
Issue Date: 2018-03-27
Part of: 2017 Fourth International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)
Start page: 7
End page: 10
Conference: International Conference on Mathematics and Computers in Sciences and in Industry (MCSI) ( 4th : 24-27 Aug, 2017 : Corfu, Greece )
This paper proposes a blind algorithm to extract the watermark. This algorithm is robust against noise and geometric attacks for grayscale images. Robust feature points are detected using the Harris Detector. In the embedding stage, sequences are placed into regions located around feature points. The sequences used are PN, Gold and decimal. In the extraction process, image features are re-Allocated using the same detector. Each feature point is used as a center of an N x N region. This region is moved horizontally and vertically within its neighboring pixels. Each move should be registered in a matrix as a correlation value of this region with the initial sequence. This procedure is repeated for all feature points till we find all the watermarked regions. The maximum correlation obtained will determine the center of the watermarked region. The proposed algorithm is robust against a wide variety of tests and is compared to other schemes.
ISBN: 9781538628201
DOI: 10.1109/MCSI.2017.10
Ezproxy URL: Link to full text
Type: Conference Paper
Appears in Collections:Department of Computer Engineering

Show full item record

Record view(s)

checked on Aug 14, 2022

Google ScholarTM


Dimensions Altmetric

Dimensions Altmetric

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.