Ciphertext domain image repair method

A repair method and ciphertext domain technology, applied in the ciphertext domain image restoration field, to achieve broad application prospects, good image restoration effects, and strong privacy effects

Active Publication Date: 2018-11-20
UNIV OF SHANGHAI FOR SCI & TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is made to solve the problem of how to restore encrypted images in the ci

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ciphertext domain image repair method
  • Ciphertext domain image repair method
  • Ciphertext domain image repair method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the following embodiments will specifically describe the ciphertext domain image restoration method of the present invention in conjunction with the accompanying drawings.

[0019] The image repairer (such as a cloud server with powerful computing capabilities) treats the encrypted image E according to the ciphertext domain image repair method involved in this embodiment P Before repairing in the ciphertext domain, you need to obtain the encrypted image E from the image owner. P , Auxiliary encrypted image E J And the mask image θ.

[0020] Image owner holds damaged image I d And the mask image θ. Among them, the mask image θ is based on the damaged image I d The result is used to mark the damaged image I d Images of damaged and intact areas in the middle. Since the image owner hopes that the image repairer will correct the damaged image I ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a ciphertext domain image repair method which is used for carrying out repair on a damaged image generated by suffering from damage of a mask image in a ciphertext domain and ischaracterized by comprising the following steps of: S1, acquiring a to-be-repaired encryption image EP, an auxiliary encryption image EJ and a mask image theta; S2, carrying out marking on the to-be-repaired encryption image EP by the mask image theta to obtain a damaged region omega and an undamaged region phi; S3, calculating priorities of to-be-repaired pixels c in the damaged region omega bytaking a block as the unit so as to obtain a target block (with the reference to the specification) with the highest priority; S4, under the assistance of the auxiliary encryption image EJ, carrying out block matching on the target block (with the reference to the specification) and all candidate blocks BS in the undamaged region phi to obtain an optimal matched block (with the reference to the specification); S5, carrying out repair on the target block (with the reference to the specification) by the optimal matched block (with the reference to the specification) to select an initial repairedencryption image EP1; S6, respectively carrying out updating on the auxiliary encryption image EJ, the damaged omega and the undamaged region phi; and S7, repeating the steps S2 to S6, until the damaged region omega is completely repaired to obtain a repaired encryption image E'P.

Description

technical field [0001] The invention relates to an image restoration method, in particular to a ciphertext domain image restoration method. Background technique [0002] Image inpainting techniques are used in many application fields. Such as removing unwanted objects or regions, filling in missing parts of an image, is also widely used in computer vision, including image restoration, compression, editing, and merging. Image inpainting techniques have also been extended to image-related applications, for example, compositing videos and animations. The current image inpainting techniques are mainly divided into three categories: methods based on interpolation (such as: FMM algorithm), methods based on partial differential equations (such as: TV algorithm), and methods based on samples / blocks (such as: Criminisi algorithm). [0003] Today, with the development of the Internet, cloud storage and computing have become common. Due to limited storage space and computing power, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06T5/00G06T5/10G06F21/60
CPCG06F21/602G06T5/001G06T5/10
Inventor 孙佳忆秦川
Owner UNIV OF SHANGHAI FOR SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap