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

Pan-Pan Niu Li Wang Xin Shen Si-yu Zhang Xiang-Yang Wang 0001 A novel robust image watermarking in quaternion wavelet domain based on superpixel segmentation. 1509-1530 2020 31 Multidimens. Syst. Signal Process. 4 https://doi.org/10.1007/s11045-020-00718-z db/journals/mssp/mssp31.html#NiuWSZW20