Title :
Image watermarking using the complex Hadamard transform
Author :
Falkowski, Bogdan J. ; Lim, Lip-San
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
In this paper, we review some techniques for embedding watermarks in grey scale digital images and propose a novel method based on multi-resolution and complex Hadamard transforms. The experimental results show that our scheme is robust to JPEG compression, image resizing, cropping, dithering distortion and successive watermarking
Keywords :
Hadamard transforms; copy protection; data compression; image coding; transform coding; JPEG compression robustness; complex Hadamard transform; cropping; dithering distortion; grey scale digital images; image resizing; image watermarking; multi-resolution transforms; successive watermarking; watermark embedding; Brightness; Cryptography; Decoding; Digital images; Discrete wavelet transforms; Image coding; Pixel; Protection; Robustness; Watermarking;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858816
