Research On Algorithm Of Steganography For Digital Image Information Hiding

With the rapid development of network technology and computering ability isgreatly enhanced, the information hiding technology has become a new hotspot in thefield of information security. The main idea of information hiding is hide the secretinformation by redundant information of the image, and pass it through the publicchannel to each other. With the increasing emphasis on information security,information hiding technology has more broad application prospects. At present, dueto the advantages embedded in the amount of airspace-based image steganographyalgorithm has become a mainstream image steganography algorithm.The main work is the study of information hiding technique for digital imagecarrier. The article first introduces the basic knowledge of the hidden informationtheory, digital images, and analysis the classical algorithm of digital imagesteganography, and finally proposed a new airspace digital image setganographyalgorithm. The algorithm is based on the SM and the LSB image teganographyalgorithm. According to the pixel and its adjacent pixel by pixel difference,divided theimage into three different regions with different number of bits LSB embedding.Theexperiments show that the proposed algorithm can increase the amount of embeddedbit and make up for the defects of the SM algorithm.Underestimate the smooth area of embeddingcapacity and proposed alarge-capacitybased on TPVD steganography algorithms for TPVD algorithm.TPVD．According to Human Visual System，this method uses3bits LSB substitutionin smooth areas blocks and uses TPVD steganographic algorithm in edged areablocks．Experiment results show that steganography has a larger embedding capacityand maintained a better steganographic performance than TPVD algorithm in thepremise of controllable highvisual quality of stego—image．...