Reversible remote sensing image information hiding processing method and device

Abstract

The embodiment of the invention discloses a reversible remote sensing image information hiding processing method and device, and the method comprises the steps: carrying out the preprocessing of a remote sensing image after information completion through employing sub-affine transformation scrambling, and obtaining a preprocessed image; performing two-dimensional DCT processing on the preprocessedimage to obtain a discrete cosine transform coefficient; and obtaining a target position of which the discrete cosine transform coefficient is an intermediate frequency, and embedding the to-be-hidden information into the target position to obtain a reversible remote sensing image after information hiding. Through performing sub-affine transformation scrambling and two-dimensional discrete cosinetransformation processing on a remote sensing image, the to-be-hidden information is embedded into the target position, the remote sensing image with the hidden information is obtained, manual intervention is not needed, the to-be-hidden information in the remote sensing image can be hidden, good hiding performance is achieved, the embedded image cannot be distinguished by naked eyes through hiding processing, the information safety is improved, and the expected information hiding effect is achieved. Meanwhile, good reversibility is achieved, and subsequent recovery of an original image is facilitated.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a reversible remote sensing image information hiding processing method and device. Background technique [0002] In order to improve the use efficiency of satellites, information hiding technology can be used to realize hierarchical authorized use, that is, to hide information in different degrees according to different permissions of users, so as to improve the use efficiency of satellites. Information hiding technology is to use the sensory redundancy of human sensory organs to digital signals to hide secret information in another or decompose and hide it in multiple superficially ordinary information. The difference between it and the traditional cryptographic system is that it not only hides the content of the information but also hides the existence of the information. In practical applications, the two can cooperate with each other, that is, to encrypt and then hide the i...

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Problems solved by technology

[0004] Existing technologies usually use simple blurring, adding mosaics, or image self-disruption to hide information, which not only requires a lot of manual intervention, but also cannot automatically repair the missing parts of remote sensing images after removing confidential information, and at the same time causes " There is no bad effect of "three hundred taels of silver" here, and the concealment is poor, which makes the reversible remote sensing image information hiding processing effect far from the ideal effect

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