Recently, Chang et al. proposed a
Sudoku-based secret image sharing scheme. They
utilized the Sudoku grid to generate meaningful shadow
images, and their scheme satisfied all essential
requirements. Based on Chang et al.’s scheme, we
propose a novel (n, n) secret image sharing scheme
based on Sudoku. In the proposed scheme, a secret
image can be shared among n different cover images by
generating n shadow images, and the secret image can
be reconstructed without distortion using only these n
shadow images. Also, the proposed scheme can solve the
overflow and underflow problems. The experimental
results show that the visual quality of the shadow images
is satisfactory. Furthermore, the proposed scheme
allows for a large embedding capacity.
Journal of Electronic Science and Technology, V.11 N.1 : 44-50.