A New Approach of Steganography Using Center Sequential Technique

Abstract

Abstract The quality of steganographic images can be determined from several aspects. One of the testing techniques on steganography is cropping which is part of robustness testing. Under cropping process, it is possible that the secret message cannot be extracted from the stego-image. This happen because the pixels values on the stego-image embedded message changed and the message content on the stego-image will be lost. In this research we propose a new approach for solving that problem by using the algorithm based on Sequential Technique where the input process starts from the center of the cover. The secret information in the form of image and the cover image is also an image. By using this method, the secret image is safe although the cropping is done from left, right, above or bottom of the stego image.