Author : Nayan A. Ardak and Nitin A. Shelke

Mosaic means collection of smaller images in various colors. Mosaic, is an image that has been divided into equal sized rectangular images, called as tiles of images each tiles of one image is replace with tiles of target image. Mosaic must be made up of hundreds and thousands of smaller images of the various color. There are two type of mosaic, which depends on how the matching is done. In the simpler type, each part of the target image is change into a particular color. Also each part of the other images is also reduced to a particular color. That part of the target image is then replaced with part of the other image where these colors are matches. In result, the target image is reduced, and then each of the resulting pixels is replaced with an image whose average color matches that pixel. In another type matching is done by comparing each pixel in the rectangle to the corresponding pixel from each other image. The rectangle in the target is then replaced with the other images.

Keywords: Color transformation, image encryption, mosaic image, secure image transmission.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.1 (Feb-2015)