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A Method of Image Scrambling and Restoration Based on Henon Mapping

An image scrambling and image technology, applied in the field of information security, can solve problems such as unfavorable rapid recovery and long time-consuming image recovery, and achieve the effects of unaffected readability, strong anti-attack ability, and fast scrambling.

Inactive Publication Date: 2018-03-13
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage is that repeated scrambling is required to achieve a satisfactory scrambling effect, and it takes too long to restore the image using periodicity, which is not conducive to the rapid recovery of the image after scrambling

Method used

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  • A Method of Image Scrambling and Restoration Based on Henon Mapping
  • A Method of Image Scrambling and Restoration Based on Henon Mapping
  • A Method of Image Scrambling and Restoration Based on Henon Mapping

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention discloses an image scrambling and restoration method based on Henon mapping. The method includes two processes of image scrambling and image restoration. Image scrambling is realized by iteration of Henon mapping, and iterative realization of inverse transformation of Henon mapping is used. Restoration of scrambled images. In the present invention, the original image can reach a satisfactory degree of scrambling through at least two iterations of the Henon mapping, realizing fast scrambling of the image; meanwhile, the original image can be quickly restored from the scrambling state with the same number of reverse iterations. In addition, this method has strong anti-attack ability, can resist certain clipping and noise attacks, and the readability of the restored image will not be affected.

Description

technical field [0001] The invention relates to an image scrambling and restoration method based on Henon mapping, which belongs to the image security technology in the field of information security. Background technique [0002] Digital image scrambling refers to scrambling the image to eliminate positional or gray-scale correlation, so that humans or computer systems cannot understand the true meaning expressed by the original image. Digital image scrambling technology can be regarded as a way of digital image encryption, and can also be used as a pre-processing and post-processing process for digital image hiding, digital watermark image implantation and digital image secret sharing. [0003] Common image scrambling methods include Arnold transform, Fibonacci-Q transform, magic square transform, knight parade transform, Hilbert curve, Conway game, chaos sorting method, etc. Among them, image scrambling algorithms represented by Arnold transform, Fibonacci-Q transform and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00G06T5/00
Inventor 平萍毛莺池吕鑫许峰王志坚
Owner HOHAI UNIV
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