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Multi-window fusion-based digital image repairing algorithm

A digital image and multi-window technology, applied in image enhancement, image data processing, calculation, etc., can solve problems such as repair result deviation, and achieve the effect of wide application prospects and accurate digital image repair effect

Active Publication Date: 2017-11-03
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

The Criminisi algorithm is currently the most commonly used digital image restoration algorithm based on texture synthesis, but this algorithm has certain defects. It needs to fill and synthesize textures by specifying the size of the repair window. When the repair window changes, it is easy to cause repair results. There is a large deviation

Method used

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Embodiment Construction

[0016] The present invention is based on a multi-window fusion digital image repair algorithm, which is mainly composed of three parts: digital image repair under multi-size windows, update of the image to be repaired and calculation of repair variance information, and improvement of priority calculation function. The specific steps and principles are as follows:

[0017] 101: Set repair windows of different sizes;

[0018] The size of the repair window is ω n ,n=1,...,N, n is the serial number of the repair window, and N is the number of windows. The Criminsi restoration algorithm is used to restore the image I to be restored, and the restored image is marked as I n :

[0019] 102: Repair window size to ω n Marks of the damaged area and source area of ​​the image I to be repaired below;

[0020] The damaged area of ​​the image I to be repaired is marked as Ω n , The margin is recorded as Target pixel p n for Any point on the source area is Φ n , And satisfy the relationship Φ n +Ω...

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Abstract

The present invention relates to a multi-window fusion-based digital image repairing algorithm. The method comprises the steps of for a to-be-repaired image I, setting a repair window omega n at different sizes; in the repair window omega n, completing the repairing process of the to-be-repaired image I by adopting the Criminisi repair algorithm, and marking the repaired image to be In; calculating an updated to-be-repaired image UI, and calculating a repair variogram VI; calculating the priority of a target pixel point Pu, and changing the priority calculation mode of the target pixel point in the Criminisi repair algorithm to be the calculation mode of Pu(pu); and repairing the UI according to the Criminisi repair principle so as to obtain a final repair result IP.

Description

Technical field [0001] The invention belongs to the field of computer image restoration, and relates to a digital image restoration algorithm based on multi-window fusion, which can be used for cultural relic protection, film and television special effects production, and the like. Background technique [0002] Digital image restoration technology is a process of information filling in the missing information area in the image to be restored. Its purpose is to realize the restoration of the damaged image while making the observer unable to perceive the trace of the image being restored. Digital image restoration technology has been applied in many fields. It is used in the photography and film industry to repair movies and restore deteriorated films. At the same time, it can also be used to eliminate red eyes, dates on photos, digital watermarks, and so on. [0003] At this stage, digital image restoration technologies are mainly divided into two categories, one is digital image re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/00
Inventor 朱程涛李锵滕建辅
Owner TIANJIN UNIV
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