The Application Of Information Hiding Technology For Remote Sensing Image

At present, global information is growing faster, especially the Internet, so information security is becoming the key problem of country security, economic growth, personal profit and the stability of society. With the information technology goes deep into the society, the meaning of information security develops from keeping information secret to keep information integrate, usable, controllable and non-deniable, and later the technology goes deep into the basic theory and practical technology of attack, avoid, detect, control, manage and evaluate information.As a key technology of information security, code technology is facing seriously challenge especially the traditional encrypt algorithm with the development of information technology and crack technology based on the network. In recent years, a new concept about the information security is presented in the international which is information hiding. Due to the need of protecting intellectual property rights growing and the restriction of using code to encrypt, all the countries are becoming interesting in the technology of information hiding.As a kind of digital media, remote sensing image is different from general image but with the characteristic of huge data, complex texture and high price. More and more important remote sensing image is transmitting from the network. If these original image data was intercepted, juggled or destroyed illegally in the process of transmission, it may have huge effect on the quality of survey data. The research of information hiding based on remote sensing image is a new task with important practical meaning and research value. At present, correlative research is rarely reported, so it has great value to research.The main researches of the paper are as following:(1) It particularly introduced the principle, characteristic and embranchment of information hiding technology, and summarized the development and research way of the technology.(2) Aimed at the characteristics of remote sensing image, it brought information hiding technology into the domain of photogrammetry, and then it summarized and presented the request, model and main algorithms of information hiding technology which was used for remote sensing image.(3) It firstly presented a lossless and reversible information hiding algorithm for photogrammetry domain, which used F(o|¨)rstner point feature detection operator with high effect and the strong ability of preventing attack. It detected the feature of remote sensing image as the foundation of information embedding, and then used the image integral transformation to embed and detect information. It could hide information of the carrier image with no information loss.(4) Realize a reversible visible data embedding algorithm, which realizes the hide and extract of the information. The experiment shows that this method can satisfy all the characters of the watermark, meanwhile, it can effectively revert the carrier information, which strengthens the reuse ability of the information.(5) According to the request of geometry precision of original image in the processing of digital photogrammetry, it firstly presented a method of quantitatively evaluating the information hiding of remote sensing image using the theory of lease square and experimented on different remote sensing images.