Pan-pan Niu

A novel robust image watermarking in quaternion wavelet domain based on superpixel segmentation

Li Wang, Xin Shen, Pan-pan Niu, 2020, Multidimens. Syst. Signal Process..

Coefficient difference based watermark detector in nonsubsampled contourlet transform domain

Hong-Ying Yang, Pan-pan Niu, Si-yu Zhang, 2019, Inf. Sci..

A new watermark decoder in DNST domain using singular values and gaussian-cauchy mixture-based vector HMT

Hong-Ying Yang, Xin Shen, Pan-pan Niu, 2020, Inf. Sci..

Locally optimum image watermark decoder by modeling NSCT domain difference coefficients with vector based Cauchy distribution

Hong-Ying Yang, Li Wang, Pan-pan Niu, 2019, J. Vis. Commun. Image Represent..