An Approach to Securely Transfer a Secret Image Using Secret-Fragment-Visible Mosaic Images and Reversible Color Transformation

In current times as several of our daily tasks are associated to internet, the security of information being broadcasted over the internet is a significant problem. Several applications or fields are needed for broadcasting secret image over the internet that may include private and confidential information that is required to be protected from hacker or from unintended users. Many procedures and methods have been proposed to ensure security, out of them most frequently used methods are encryption and data hiding. Hiding the information in digital images has been area of significance in the digital image processing field. This paper presents an approach where mosaic image generation has done by separating the secret digital image into small divisions called as fragments and changing their particular color features into corresponding blocks of the target image. Usage of the Pixel color conversions facilitates to yield the lossless improved image based on the untransformed color space values. Creation of the key plays a significant function to recover the data from the secret image in lossless approach. Finally the same approach can be performed on videos also which helps to reduce the flickering artifact to attain the lossless data recovery in motion related videos. The experimental outcomes demonstrate excellent robust performance against every incidental and accidental attacks also evaluate to the usual algorithms performance valuation has been increased in a considerable way.