A Large-capacity Anti-compression Image Information Hiding Method

Abstract

The invention discloses a method for hiding high-capacity compression-resisting image information. According to the method, firstly, a carrier image is sampled and is decomposed to acquire sub-images which are same in size and do not mutually overlap; secondly, several sub-images are preferentially selected from the sub-images and serve as carrier sub-images, and the rest of the sub-images serve as source images used for carrier recovery. Firstly, encoding and scrambling are conducted on embedded information; secondly, one or more digits among four high digits in the carrier sub-images are hidden with a foundational hiding method, and sub-images which contain secret information and sub-images which do not contain secrete information are reconstructed to form an image which contains secret information to be transmitted; received images are decomposed by a receiving end, the secret information is extracted from the sub-images which contain the secret information, and the sub-images which do not contain the secret information are predicted in an interpolation mode to recover carrier images. The method has the advantages of being large in hiding capacity, strong in compression-resisting capability and low in complexity, can recover the secret information and the carrier images in a high-quality mode under the condition of achieving two-time compression to eight-time compression of a JPEG2000 algorithm, wherein the maximum relative hiding capacity can reach one eighth and the typical value of the PSNR of carrier image recovery is 40dB.

Description

technical field [0001] The invention relates to an image communication method, in particular to an information hiding method that hides a large amount of data in an image and can resist compression of typical image data, and belongs to the technical field of communication. Background technique [0002] With the development of science and technology, people's demand for high-resolution images is increasing, and it is becoming more and more important to improve the efficiency of image data transmission and the security of transmission. Through information hiding (also known as data hiding) technology, it is possible to embed secret information in the image for transmission without changing the size of the image, and the receiving end can recover the secret information and image. [0003] For information hiding, if the hiding capacity is small, and the secret image hiding the secret information does not change or changes little during the transmission process, the receiving end...

AI Technical Summary

Problems solved by technology

[0018] The technical solution of the present invention is to overcome the deficiencies of the prior art, provide a large-capacity, anti-compression image hiding method, and solve the problems of the existing anti-compression information hiding algorithm with small hiding capacity and large-capacity data hiding method recovery Issues with poor carrier image quality

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