Secret Digital Image Sharing by Various Image Media using NVSS Scheme

Secure digital image sharing is a new concept of providing security to digital images. Now a day’s security is most important issue. So this project gives an idea about the sharing digital image in different medias without affecting its privacy. Conventional visual secret sharing (VSS) technique hides secret images in shares. The images may be either printed on transparencies or are encoded and stored in a digital form. The shares can be appear as noise-like pixels or as meaningful images, but it will cause intuition and increase interception risk during transmission of the shares. Hence, VSS schemes suffer from a transmission risk problem for the secret itself and for the participants who are involved in the VSS scheme. To overcome this problem, we proposed a natural image based VSS scheme (NVSS scheme) that shares secret images via various carrier media to protect the secret and the participants during the transmission phase. The proposed (n, n) - NVSS scheme can share one digital secret image over n-1 arbitrary selected natural images (called natural shares) and one noise-like share. The natural shares can be photos or hand-painted pictures in digital form or in printed form. The noise-like share is generated based on these natural shares and the secret image. The unaltered natural shares are many and harmless, thus greatly reducing the transmission risk problem. We also propose possible ways to hide the noise-like share to reduce the transmission risk problem for the share. The results indicate that the proposed approach is an excellent solution for solving the transmission risk problem for the VSS schemes.