Method for hiding high-capacity compression-resisting image information

An image information and anti-compression technology, which is applied in the fields of information hiding and image communication, can solve the problems of poor carrier image quality and small hidden capacity, and achieve the effects of small image characteristics, quality improvement, and performance improvement

Active Publication Date: 2013-11-27
XIAN INSTITUE OF SPACE RADIO TECH
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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

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  • Method for hiding high-capacity compression-resisting image information

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Embodiment Construction

[0038] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] The present invention uses image decomposition technology to decompose the original image into multiple sub-images, selects some sub-images as carriers according to the compression ratio for information hiding, and uses the basic information hiding method (such as the most significant bit information hiding method) for large-capacity information hiding , the hidden capacity depends on the proportion of the sub-image, and the anti-compression performance is mainly determined by the sub-image hiding method, and then the carrier image is recovered at the receiving end, and the recovery of the carrier image is based on other sub-images.

[0040] Such as figure 1 Shown, a kind of large-capacity anti-compression image information hiding method of the present invention, its steps are as follows:

[0041] (1) The original carrier image...

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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...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N1/32
Inventor 周诠刘娟妮朱厉洪魏佳圆
Owner XIAN INSTITUE OF SPACE RADIO TECH
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