A Method to Hide Information in Image Based on Selected Pixels

ABSTRACT There are many ways to hide information or transmission of information secretly. In this sense steganography is the best part of sending information secretly. Steganography, like watermarking and fingerprinting is a branch of science to hide information but, unlike watermarking and fingerprinting, whit steganogaraphy undetectable presence of a hidden text. There are many techniques to perform steganography on electronic media, most notably audio and image files. This paper intends to give an overview of image steganography, its uses and techniques. It also attempts to identify the requirements of a good algorithm of steganography. The outcome of this paper is to generate a cross platform that can effectively hide a message inside a digital image file. An image is the combination of several pixels and each pixel has three color numbers and an image consist of millions of numbers. So the change in few color numbers resulting the picture which would probably look a lot likes the original image. In this paper, we are presenting a technique which works by changing a few pixel color value at specific pixel in the image. The pixels are selected based on consideration the criteria of color intensity on image. It is also, try not to degrade image quality and information which are stored will not lose their security and as far as possible does not change the image size.

کلیدواژه ها:

_Steganography ، pixel value ، color intensity ، image quality ، image size_