二重ツリー複素数ウェーブレット変換と区間演算に基づく改ざん検知用電子透かし法

抄録

We propose a new watermarking scheme for image authentication and tamper detection using the dual-tree complex discrete wavelet transform (DT-CDWT) and interval arithmetic (IA). Unlike the ordinary existing methods, we don’t need any watermark. Because our method automatically produces a watermark using the original image. In this presentation, we describe our watermarking and authentication procedure in detail and show some experimental results demonstrating that our method has better-quality watermarked images and can locate the tampered areas.