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Image picture encipher and decipher method

An encryption method and screen technology, which is applied in the field of encryption and decryption of image screens, can solve problems such as changes in the image screen of the encrypted subject, and achieve the effect of preventing leaks

Inactive Publication Date: 2006-11-29
刘畅
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical problem that the existing encryption method cannot substantially change the image frame itself as the encryption subject, the present invention provides an image frame encryption method that substantially changes the image frame itself as the encryption subject
[0004] The technical solution adopted by the present invention to solve the technical problem that the existing encryption method cannot substantially change the image as the subject of encryption is to provide an encryption method for an image, which includes: randomly dividing the original image ;Rearrange the segmented areas of the original image frame to form one or more encrypted image frames

Method used

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  • Image picture encipher and decipher method
  • Image picture encipher and decipher method

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] figure 1 is a schematic flowchart of the first embodiment of the image frame encryption method of the present invention, wherein the original image frame 11 to be encrypted is a fingerprint image. Through the image segmentation technology known to those skilled in the art, the original image frame 11 is divided into 8 divided areas 131-138 of different sizes and shapes that need to be rearranged. The divided areas 131 , 134 , 135 , and 136 are rectangles, and the divided areas 132 , 133 , 137 , and 138 are irregular polygons. The encrypted image frame 13 is finally formed after rearranging the segmented regions 131-138 of the original image frame 11 using image arrangement techniques known to those skilled in the art. When rearranging, the coordinate orientations of each segmented area have changed. For example, segmented area 131 is adjacent t...

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Abstract

A method for enciphering and deciphering image pattern includes dividing a frame of original image pattern to be a numbers of region randomly and rearranging said divided regions to form a frame of enciphered image pattern, enabling to do said process cyclically to let enciphered image pattern be changed essentially, restoring original image pattern by carrying out retrace course of rearrangement for realizing deciphering when it is required.

Description

【Technical field】 [0001] The invention relates to an encryption and decryption method of an image frame, in particular to an encryption and decryption method capable of substantially changing the image frame itself as the subject of encryption. 【Background technique】 [0002] At present, various technologies are adopted to solve image encryption. For example, Chinese patent application 01119110.4 entitled "A Method for Encrypting and Encrypting Optoelectronic Information" discloses a method for encrypting and encoding optoelectronic information. The application for the invention uses different colors or different An image or image group composed of gray pixels encodes graphics, images, documents, files and their compressed files, etc., to realize graphics, images, documents, and file encryption. In the prior art, the image frame itself, which is the subject of encryption, will not change substantially after the implementation of the above-mentioned technology is completed. ...

Claims

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Application Information

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IPC IPC(8): G06T1/00
Inventor 刘畅
Owner 刘畅
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