A blind watermarking scheme based on computational ghost imaging in wavelet domain
Optics Communications(2021)
Abstract
A secure, robust, and blind watermarking method based on computational ghost imaging (CGI) in the discrete wavelet transform domain is proposed. In this method, an original watermark is firstly encrypted by the CGI system with chaotic key, then the sequences of the ciphertext are quantified into two levels and hidden in the wavelet coefficients of a host image. The quantization on the ciphertext compresses the amount of data to be hidden but does not induce serious deterioration in the retrieved image comparing with the conventional CGI. Simulation results show that the decrypted watermark is still distinguishable and can be authenticated with the nonlinear correlation coefficient. The embedded data can be blindly extracted with no help of the original host image. The chaotic key acts as both the encryption and the embedding key, which guarantee the security of the watermarking scheme.
MoreTranslated text
Key words
Watermarking,Optical encryption,Computational ghost imaging,Wavelet transform
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined