DocumentCode
2974349
Title
Multi-polarity complex hadamard transforms for phase watermarking algorithm
Author
Falkowski, Bogdan J.
Author_Institution
Nanyang Technol. Univ., Singapore
fYear
2007
fDate
10-13 Dec. 2007
Firstpage
1
Lastpage
5
Abstract
In this paper, a robust phase watermarking algorithm for still images is presented where the watermark information is conveyed in the phase spectrum in the transform domain. Phase watermarking algorithm that uses multi-polarity Complex Hadamard transform is developed. The robustness of presented algorithm is investigated by its uniqueness, JPEG encoding, image resizing, dithering noise distortions, sharpening, cropping and successive watermarking.
Keywords
Hadamard transforms; image coding; watermarking; JPEG encoding; complex Hadamard transforms; cropping; dithering noise distortions; image resizing; multipolarity Hadamard transforms; phase spectrum; phase watermarking algorithm; sharpening; still images; Cryptography; Digital images; Digital signal processing; Distortion; Explosives; Image coding; Logic design; Noise robustness; Signal processing algorithms; Watermarking;
fLanguage
English
Publisher
ieee
Conference_Titel
Information, Communications & Signal Processing, 2007 6th International Conference on
Conference_Location
Singapore
Print_ISBN
978-1-4244-0982-2
Electronic_ISBN
978-1-4244-0983-9
Type
conf
DOI
10.1109/ICICS.2007.4449718
Filename
4449718
Link To Document