Multilevel histogram shape‐based image watermarking invariant to geometric attacks

In this paper, a geometrically invariant image watermarking scheme is proposed by exploiting multilevel histogram shapes. The embedding procedure starts decomposing the host with first level Haar wavelet. After that, histograms are extracted from approximation subband via several rounds, which used to embed watermark bits. Each round of extracts at specified level. Then split into fragments, number bits can be embedded. way, considerable capacity available. Besides, adjustment in suggested guarantee good population bins. Experimental results support its robustness against various common attacks and geometric attacks. Moreover, multiple sequences profiles, enriches practical applications.