Open AccessQuantum Cosine Transform Based Watermarking Scheme for Quantum Images
Author(s) -
Wang Shen,
Song Xianhua,
Niu Xiamu
Publication year - 2015
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2015.04.016
Subject(s) - discrete cosine transform , digital watermarking , quantum , scheme (mathematics) , computer science , image (mathematics) , algorithm , mathematics , computer vision , physics , quantum mechanics , mathematical analysis
A novel watermarking scheme for quantumimage is proposed based on Quantum cosine transform(QCT). The cosine coefficients are extracted by executingQCT on quantum image. A dynamic vector forcontrolling embedding strength instead of a fixed parameterfor embedding process in other scheme is utilized toprocess quantum watermark. The adder operation and theinverse QCT are implemented which offset the QCT andguarantee the embedding process having smaller impact onthe quantum carrier image. Simulation results and analysisshow that the proposed dynamic watermarking scheme hasbetter visual quality under a higher embedding capacity.