Multiparameter discrete transforms based on discrete orthogonal polynomials and their application to image watermarking

作者：

Highlights：

• Krawtchouk, Chebyshev and Charlier discrete orthogonal polynomials are investigated.

• We propose multiparameter discrete fractional transforms based on these polynomials.

• The new transforms are used to construct robust digital watermarking schemes.

摘要

•Krawtchouk, Chebyshev and Charlier discrete orthogonal polynomials are investigated.•We propose multiparameter discrete fractional transforms based on these polynomials.•The new transforms are used to construct robust digital watermarking schemes.

论文关键词：Discrete orthogonal polynomials,Multiparameter discrete Krawtchouk transform,Multiparameter discrete Chebyshev transform,Multiparameter discrete Charlier transform,Fast computations,Blind image watermarking

论文评审过程：Received 10 February 2020, Revised 17 May 2021, Accepted 10 August 2021, Available online 17 August 2021, Version of Record 26 August 2021.

论文官网地址：https://doi.org/10.1016/j.image.2021.116434