The Method Of Image Steganography Count Statistic Analysis

Information hiding, as a new method of secret communication, is used not only in modern military affairs but also in country security department. Moreover, under the open internet environment, it can also apply to the financial field including bill pursue and electrical government affairs.The key problem of information hiding is of security. It is related to the embedding amount. Generally, the embedding amount larger, the security worse. The article does the following works to the problem (embedding an image in the image of the same size):1, Concidering the human vision system, point out a classify standard, which classifies the carry-image according to its character. This method can avoid the possibility effectively that the secret information may be found out where amount of information are embedded in the plat areas2, Considering the problem of over gate, research it in theory and estimate the possibility. To offer a guard, the article points out the confirm method called"code distance".3, Point out a new embedding method : use the two directions embedding and the direction depend on the change that has happened because of the embedding formerly, witch decrease the difference of the carry-image and embedded image. That is the method called GLSB.Base on the above works, the method of image stegangraphy count statistic analysis offers. The method can effectively improve the security of stegangraphy. The test results in the end also prove the conclusion.