Color image authentication method and system based on hypercomplex number encrypted domain sparse representation

A color image, sparse representation technology, applied in the field of image processing, to achieve the effect of good robustness, small key storage space, and high security

Active Publication Date: 2016-09-28
广州市乐得瑞科技有限公司
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  • Summary
  • Abstract
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However, this method also uses double random phase encryption technology

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  • Color image authentication method and system based on hypercomplex number encrypted domain sparse representation
  • Color image authentication method and system based on hypercomplex number encrypted domain sparse representation
  • Color image authentication method and system based on hypercomplex number encrypted domain sparse representation

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Embodiment Construction

[0049] 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 designate 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.

[0050]In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refer...

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Abstract

The invention provides a color image authentication method and system based on hypercomplex number encrypted domain sparse representation. The color image authentication method comprises the steps of generating a phase mask according to a Logistic chaotic sequence, carrying out double random phase encryption on a color image by adopting quaternion Fourier transform so as to acquire ciphertext data, carrying out sparse representation on a component of the ciphertext data by using a sparse matrix so as to acquire a sparse ciphertext, wherein the component comprises a real component and an imaginary component, decrypting the sparse ciphertext, calculating a nonlinear correlation coefficient of a decrypted image, and carrying out authentication on the color image according to a centralized peak value. The color image authentication method based on the hypercomplex number encrypted domain sparse representation in the embodiment of the invention has high security, and a certain degree of noises can be resisted, thereby being suitable for being applied to the fields of secret communication and authentication of images.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a color image authentication method and system for sparse representation in a hypercomplex encryption domain. Background technique [0002] With the continuous development of image acquisition equipment and mobile communication technology, the images that people currently acquire are mainly color images, which not only provide rich visual information but also bring people a pleasing visual experience. However, these color images may contain some private or confidential information. In order to hide these important image information, image encryption algorithms can be used for safe and reliable transmission and use. [0003] Since the image encryption algorithm based on dual random phase encoding was proposed, image encryption algorithms based on fractional Fourier transform, Fresnel transform, Gyrator transform and other transforms have been reported one after another. ...

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Application Information

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IPC IPC(8): H04N1/32
CPCH04N1/32272H04N1/32288H04N1/32309
Inventor 邵珠宏尚媛园付小雁丁辉周修庄
Owner 广州市乐得瑞科技有限公司
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