A GRAY-LEVEL IMAGE SHARING METHOD

1左豪官、2吳嘉龍、3婁德權、13王開平
H. K. Tso1, C. L. Wu2, D. C. Lou3, and K. P. Wang1,3

1Department of Electronic Engineering, Army Academy R.O.C.
2Department of Aeronotic Communication Electronics, Air Force Institute of Technology
3Department of Electrical Engineering, Institute of Technology, National Defense University

ABSTRACT

　　Secret sharing technique has been extensively applied to the field of information security. In this paper, a simple (n, n) gray-level image sharing method is proposed to ensure the security of the secret image. The proposed method utilizes the base conversion operation and a codebook to generate n sharing images. Even though the enemy obtains n-1 or fewer sharing images, the secret image still cannot be revealed. Only when the n sharing images are all gathered, the secret image can be reconstructed.

KEYWORDS:Secret sharing, information security, steganography, digital watermarking, cryptography.