SECURITY OF CIVIL DESIGNS DURING TRANSMISSION THROUGH NETWORKS BY RETAINING QUALITY.

摘要

The main aim of System is to share an image in a network to avoid a transmission risk problem. In visual secret sharing (VSS) schemes hide secret images in shares that are either printed on transparencies or are encoded and stored in a digital form. The shares can appear as noise-like pixels or as meaningful images; but it will arouse suspicion 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 address this problem, a natural-image-based VSS scheme (NVSS scheme) can be used that shares secret images via various carrier media to protect the secret and the participants during the transmission phase. The proposed NVSS scheme shared secret image by generating noise-like shares using natural image. 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 unchanged natural shares are diverse and harmless, thus greatly reducing the transmission risk problem. Also hash function is used to authenticate transmitted share.Quality of the recovered image is retain by using filtering techniques.