关键词: 自嵌入, 双水印, 篡改定位, 小波变换, JPEG压缩

Abstract: To improve the precision of tamper location and the capability of resisting against JPEG compression, this paper presented a new image dual-watermarking scheme for both tamper detection and tampered image recovery. The basic principle of this scheme was to let the original image be performed by the 1-level discrete wavelet transformation. Then the authentication watermarking and self-recovery watermarking were respectively embedded into high-frequency and low-frequency component of original image. The experimental results show that the proposed scheme not only can detect and locate temper accurately, but also is robust to resist against JPEG compression.

Key words: self-embedded, dual-watermarking, tamper localization, wavelet transform, JPEG compress