Our experimental results demonstrated that the proposed scheme has ability to resist against different attacks, i.e., different sizes of tampered regions, content tampered attack, and [r]
Trang 1A reversible image authentication scheme based on fragile watermarking in discrete wavelet transform domain
Thai-Son Nguyen a ,
Chin-Chen Chang b , , , ,
Xiao-Qian Yang c ,
Taiwan, ROC
Chiayi, Taiwan, ROC
Received 16 July 2015, Accepted 2 May 2016, Available online 10 May 2016
Abstract
Image authentication technique protects the integrity of images Many image
authentication schemes have been proposed in recent years However, in these
schemes, the image is permanently distorted and cannot be recovered to its original version after image authentication In this paper, we propose a new, reversible
watermarking scheme for image authentication scheme in the DWT domain to achieve high accuracy of tamper detection, and complete reversibility while maintaining high image quality of watermarked images In the proposed scheme, authentication code is randomly generated and embedded into 2nd DWT low-frequency subbands of each image block Our experimental results demonstrated that the proposed scheme has ability to resist against different attacks, i.e., different sizes of tampered regions, content tampered attack, and collage attack, with small distortion of the watermarked image In addition, the proposed scheme achieves reversibility that is quite important to some special fields, i.e., medical images, military images, and fine artwork