A New Steganography Method in Colored Images Using Mixed Column Transform in HSV Color Model

Steganography is largely used in information security systems. In steganography, the goal is to hide the information such that only the sender and receiver are aware of the communication and information. Steganography is carried out on different media such as image, sound and text. It can be performed in both transform and spatial domains. In transform domain methods, first the cover image is transformed into a different domain using, for example, a frequency transform. Then, the secret message is embedded in the conversion coefficients. In this paper, a new steganography method based on the transform domain is proposed to conceal text in an HSV color image. After converting the image to HSV, it is divided into blocks and the mixed column transfer is applied on each block. The secret message is embedded in the transferred columns. Simulation results and comparisons show the high capacity and increased security of the proposed method.