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Remote sensing image encryption retrieval method based on Arnold chaotic mapping

A remote sensing image, chaotic mapping technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problem of remote sensing image encryption retrieval, etc., to achieve high security and anti-attack, good anti-attack, security high effect

Active Publication Date: 2017-03-08
SHANGHAI OCEAN UNIV
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  • Application Information

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Problems solved by technology

[0006] However, the above-mentioned remote sensing image retrieval scheme is only about the feature pair image content, and there is no corresponding report on the remote sensing image encryption retrieval of Arnold chaotic map

Method used

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  • Remote sensing image encryption retrieval method based on Arnold chaotic mapping
  • Remote sensing image encryption retrieval method based on Arnold chaotic mapping
  • Remote sensing image encryption retrieval method based on Arnold chaotic mapping

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Embodiment 1

[0045] Please refer to figure 1 , figure 1 It is a flow chart of a remote sensing image encryption retrieval method based on Arnold chaotic map of the present invention. A kind of remote sensing image encryption retrieval method based on Arnold chaotic map, described remote sensing image encryption retrieval method comprises the following steps:

[0046] Step S1: remote sensing image preprocessing;

[0047] The remote sensing image will be affected by the external environment in the process of acquisition and transmission, which will reduce the quality of the image and bring certain difficulties to the analysis and recognition of remote sensing image. Therefore, it is necessary to denoise the remote sensing image before use to enhance the spectral characteristics of the remote sensing image.

[0048]Step S11: This scheme adopts the encryption algorithm based on Arnold chaotic map, so it is necessary to process the border of the encrypted remote sensing image to make the len...

Embodiment 2

[0072] In order to better understand the above technical solutions, the following will be combined with the attached Figure 2-Figure 6 Further illustrate, a kind of remote sensing image encryption retrieval method based on Arnold chaotic map of the present invention comprises the following steps:

[0073] Step S1: Remote sensing image preprocessing

[0074] Step S11: by filling the border of the image with 0 (black), the length and width of the encrypted remote sensing image are even numbers;

[0075] Step S12: preprocessing the remote sensing image by using the impact filter and the nonlinear anisotropic diffusion filter, while smoothing the noise, retaining the edge and texture details of the original image;

[0076] Step S13: use the image edge detection operator to preprocess the image and calculate the adaptive parameter x_f;

[0077] Step S14: According to the above adaptive parameter x_f, we can obtain the corresponding adaptive total variational model (ATV) to remov...

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Abstract

The invention relates to a remote sensing image encryption retrieval method based on Arnold chaotic mapping. The method comprises the following steps: S1, a remote sensing image is pretreated; S2, a remote sensing image feature vector is extracted; S3, a remote sensing image is protected through encryption; S4, similarity matching on the remote sensing images is carried out; and S5, decryption of the remote sensing image and a remote sensing image encryption reverse process are carried out. The method of the invention has the advantages that the Arnold chaotic mapping-based encryption method is applied to the remote sensing image field, safe storage of the remote sensing image in a cloud environment is protected, and through building correlation characteristics between a plaintext and a ciphertext, a data user can directly carry out safety retrieval on the ciphertext remote sensing image through cloud computing.

Description

technical field [0001] The invention relates to the field of remote sensing image encryption and its retrieval processing, in particular to an encryption retrieval method of remote sensing images based on Arnold chaotic mapping. Background technique [0002] In the context of information globalization, remote sensing technology has shown remarkable achievements in all walks of life with its visualization, globalization, networking and intelligent features. Modern remote sensing technology has shown great advantages and potentials in information acquisition, and also demonstrated its unique technical charm in data analysis and processing. Remote sensing technology can provide people with a large amount of rich information. Remote sensing technology can transform the remote sensing data obtained by sensors into usable information and be used by us. [0003] Remote sensing is a method of long-distance detection target technology. Image information is obtained through the imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/41G06T1/00
CPCG06T1/0021G06T2201/0052G06T2207/10032
Inventor 黄冬梅魏立斐耿霞戴亮王丽琳苏诚
Owner SHANGHAI OCEAN UNIV
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