Image watermarking and fusion based on Fourier single-pixel imaging with weighed light source

TL;DR

This paper introduces a novel Fourier single-pixel imaging scheme with a multiplexed time-varying light source, enabling high-quality visible and encrypted image watermarking, adaptable to various illumination modes and suitable for advanced imaging systems.

Contribution

It proposes TV-FSPI, a new method combining Fourier single-pixel imaging with a multiplexed time-varying light source for versatile watermarking applications.

Findings

Achieves high-quality visible and encrypted watermarking

Compatible with existing illumination patterns like Hadamard and random modes

Potential for use in single-pixel broadcasting and multi-spectral imaging systems

Abstract

In previous single-pixel imaging systems, the light source was generally idle with respect to time. Here, we propose a novel image fusion and visible watermarking scheme based on Fourier single-pixel imaging (FSPI) with a multiplexed time-varying (TV) signal, which is generated by the watermark pattern hidden in the light source. We call this scheme as TV-FSPI. With TV-FSPI, we can realize high-quality visible image watermarking, encrypted image watermarking and full-color visible image watermarking. We also discuss the extension to invisible watermarking based on TV-FSPI. Furthermore, we don't have to recode illumination patterns, because TV-FSPI can be extended to existing mainstream illumination patterns, such as random illumination mode and Hadamard illumination mode. Thus TV-FSPI has the potential to be used in single-pixel broadcasting system and multi-spectral single-pixel imaging system.