We propose an image hiding scheme based on computational ghost imaging (CGI) system.

We demonstrate the feasibility of the proposed image hiding scheme by experiment and numerical simulation. Then we test the robustness of the proposed scheme against ‘salt and pepper’ noise and image cropping operation and the security against eavesdropping by experiments.

Comparing with LSB algorithm, the encrypted watermark image produced with the aid of the CGI system, instead of the original watermark image, is embedded into a host image in the proposed scheme, which is complete noise even if eavesdropper has known the proper reconstruction mechanism but has no secret keys.

The scheme paves a way to exploit an image hiding technique combing with ghost imaging, so as to significantly enhance the security and robustness of image hiding techniques.