Semi-fragile watermarking technique for image tamper localization
In this paper an image authentication scheme is proposed to locate tampered area correctly and accurately on the watermarked image. Semi-fragile watermarks are extracted from detail coefficients of wavelet transform and embedded into DCT coefficients. In order to enhance the security, chaotic sequence is employed to encrypt the watermark signals. Experimental results show the proposed technique is robust against JPEG lossy compression and noise pollution.
Semi-fragile watermarking tamper localization DCT JPEG-Iossy
Zhou Hao Haiyan Li Pengfei Yu
Information School of Yunnan University Kunming China
国际会议
长沙
英文
519-523
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）