Contourlet domain locally optimum image watermark decoder using Cauchy mixtures based vector HMT model

作者：

Highlights：

• We analyzed fully the marginal distribution and strong dependencies of Contourlet coefficients.

• We proposed a new HMT statistical model, namely Cauchy mixtures-based vector HMT.

• We developed a blind locally optimum Contourlet domain multiplicative watermark decoder.

摘要

•We analyzed fully the marginal distribution and strong dependencies of Contourlet coefficients.•We proposed a new HMT statistical model, namely Cauchy mixtures-based vector HMT.•We developed a blind locally optimum Contourlet domain multiplicative watermark decoder.

论文关键词：Image watermarking,Vector HMT,Cauchy mixture model,Locally optimum decoder,Contourlet transform

论文评审过程：Received 5 March 2019, Revised 10 December 2019, Accepted 7 August 2020, Available online 14 August 2020, Version of Record 19 August 2020.

论文官网地址：https://doi.org/10.1016/j.image.2020.115972