A multispectral photon-counting double random phase encoding scheme for image authentication.

Faliu Yi,Inkyu Moon,Yeon Lee

doi:10.3390/s140508877

Faliu Yi, Inkyu Moon + Show 1 more

Open Access

https://doi.org/10.3390/s140508877

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Abstract

In this paper, we propose a new method for color image-based authentication that combines multispectral photon-counting imaging (MPCI) and double random phase encoding (DRPE) schemes. The sparsely distributed information from MPCI and the stationary white noise signal from DRPE make intruder attacks difficult. In this authentication method, the original multispectral RGB color image is down-sampled into a Bayer image. The three types of color samples (red, green and blue color) in the Bayer image are encrypted with DRPE and the amplitude part of the resulting image is photon counted. The corresponding phase information that has nonzero amplitude after photon counting is then kept for decryption. Experimental results show that the retrieved images from the proposed method do not visually resemble their original counterparts. Nevertheless, the original color image can be efficiently verified with statistical nonlinear correlations. Our experimental results also show that different interpolation algorithms applied to Bayer images result in different verification effects for multispectral RGB color images.

Highlights

Double random phase encoding (DRPE) and its applications have been extensively studied for image encryption, information hiding and watermarking [1,2,3,4,5]
We show that the integration of multispectral photon-counting imaging (MPCI) and double random phase encoding (DRPE) can be used for the authentication of multispectral images
The three color samples in Bayer images which have been down-sampled from a primary RGB color image are encrypted with DRPE and the amplitude part of the resulting image is photon counted

Summary

Introduction

Double random phase encoding (DRPE) and its applications have been extensively studied for image encryption, information hiding and watermarking [1,2,3,4,5]. We show that the integration of MPCI and DRPE can be used for the authentication of multispectral images In this procedure, the three color samples (pixels of red, green, and blue color [24]) in Bayer images which have been down-sampled from a primary RGB color image are encrypted with DRPE and the amplitude part of the resulting image is photon counted. Compared with other color encryption methods [18,19,20,21,22,23], the scheme combining MPCI and DRPE in this paper can make the decrypted image visually unrecognized under a low light level while the decrypted image can be authenticated properly with nonlinear cross correlation. The schematic diagram of MPCI is described as Figure 2

Integration of MPCI and DRPE

Numerical Results

Conclusions