Adaptive HDR Image Blind Watermarking Approach Based on Redundant Discrete Wavelet Transform

Remarkable success has been recorded in the usage of digital watermarking which is aimed at protecting intellectual property multimedia content. In this paper, a new tone mapping attack-resistant high dynamic range (HDR) image zero-watermarking algorithm proposed. extraction stable and invariant features are extracted for efficient through application redundant discrete wavelet transform (RDWT) to HDR image. The first step involves transforming HVS color space, RDWT implemented using V-channel so that LL sub-band contains strong structure contents obtained. second dividing into non-overlapping blocks, afterwards subjected process transformation use singular value decomposition (SVD) U matrix can be extracted. Third, an Auto-Regressive (AR) prediction technique was employed generating local relationship model comparison done facilitate production binary feature mask. fourth process, hybrid chaotic (HCM) used generate blended watermark security fortified. Lastly, computation effective zero-watermark achieved implementation exclusive-or operation on Based results, approach presented study demonstrated superior performance terms withstanding TM attacks other associated with processing.