Kirti Joge. Int. Journal of Engineering Research and Application www.ijera.com ISSN : 2248-9622, Vol. 7, Issue 1, ( Part -4) January 2017, pp.01-04 www.ijera.com 1 | Page Reversible Color Transformation: Method To Secure Secret Image By Transforming Into Secret Fragment Visible Mosaic Image Kirti Joge 1 , Prof. V. K. Barbuddhe 2 1 Student, Dept. of Electronics and Telecommunication Engineering, JCET Yavatmal, Maharashtra, India 2 Asso.Prof, Dept. of Electronics and Telecommunication Engineering, JCET Yavatmal, Maharashtra, India ABSTRACT Security of information is becoming main target for modern network age. Internet is the most popular medium for transferring of data. The images which are being transmitted are have various applications, such as confidential enterprise archives, etc. As these images contain secret information which have to protect from unauthorized receptors during transmission of these images hence, a new secure transmission technique is proposed, by transforming confidential or secret image into meaningful secret fragment mosaic image. This mosaic tile image is almost of same size and looks similar to the selected target image. The proposed method contains technique which forms the secret-fragment-visible mosaic image using reversible color transformation scheme. The blocks fragment of secret image are arrange in different ways to produce mosaic image which is seems to be different from secret image. The color transformation process is used, so that secret image may be recovered nearly losslessly. A key is embedded by a losslessly data hiding scheme into created mosaic image for recovery of the original secret image. Keywords: Color Transformation, Data Hiding, Mosaic tile image, Secure image transmission, Secret fragment visible mosaic image. I. INTRODUCTION Internet becoming a wide network for transferring the data. The image from various sources can be transmitted for various purposes such as confidential enterprise archives, medical imaging systems, and military image databases. Because of such wide network the leakage chances of leakage of secret information will be increases. Some of the images can contain private or confidential information which must to protect from unauthorized receptor or hackers for example in military field it is very important to protect the secret information from third party during transmission. Many methods are proposed for the security of image such as cryptography and image steganography. Cryptography is an art and science of protecting information from unauthorized attackers by changing its form. It gives four basic services such as confidential, authentication, data integrity, non-repudiation. Instead of these it have some issues as high availability, delay in time, high cost etc. which makes its performance as low. Another method is image steganography, is a science of hiding image in cover media so that on one recognized secret image. But the drawbacks of these techniques are size and protection. One has to provide more padding around the secret image so that secret image should not be recognizable.[1-5] Proposed work helps to overcome these drawbacks. This is a technique which transfers a secret image into a meaningful secret fragment visible mosaic image. This mosaic image is having same size as that of target image and also looks similar to it. The mosaic image is obtained by arranging blocks fragment of secret image. The secret image is first divided into rectangular fragments. Then they are fitted into the target blocks according to the color characteristics of both. The process of the transformation can be carried out with the help of some relevant embedded information which is also useful for losslessly recovery of secret image from the mosaic tile image. This works as a key which is being embedded while converting secret image into mosaic fragment image[6-9]. The LSB substitution technique of data hiding method is used to embed the key of 8 bit in proposed method. It can also provide the security consideration of embedded information. II. IMPLEMENTATION Embedding secret image into mosaic tile image with text such that it look similar to the target image which is select from the database is challenging part. If secret fragment mosaic image does not look like a target image then the third party may get hint about the image and then it is possible RESEARCH ARTICLE OPEN ACCESS