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Method for repairing fallen mural

A repair method and mural technology, applied in image data processing, instruments, calculations, etc., can solve problems such as structural fracture, mural falling off, texture error extension, etc., to achieve the effect of improving accuracy, overcoming texture error extension, and overcoming structural fracture.

Pending Publication Date: 2020-11-10
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a repair method for mural falling off, which can overcome the problems of structure fracture and texture error extension in the existing repair methods

Method used

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  • Method for repairing fallen mural
  • Method for repairing fallen mural
  • Method for repairing fallen mural

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Embodiment Construction

[0072] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0073] The present invention is a repairing method for mural falling off, such as figure 1 As shown, follow the steps below:

[0074] Step 1. Collect the original mural and preprocess it;

[0075] The preprocessing process is to equalize the histogram of the original mural; improve the grayscale range, contrast and clarity of the image to be processed figure 2 For the original image to be repaired, image 3 The mural picture after pretreatment.

[0076] Step 2. Input the pre-processed original mural, and use the method of "threshold segmentation + region growth" to calibrate its fall-off area, and determine the boundary of the fall-off area, that is, the boundary to be repaired;

[0077] The specific process is: convert the preprocessed image into a grayscale image and a YCrCb space image; set different thresholds according to the difference in the pixel values ​...

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Abstract

The invention discloses a method for repairing a fallen mural. The method comprises the following steps of: interactively segmenting a falling binary image according to the difference of pixel valuesat falling positions in different color spaces to obtain a more accurate calibration mask map. Aiming at the defects of a traditional Criminisi algorithm, the relationship between a structure tensor and the image texture is fully utilized to construct a new priority function, and an original algorithm function is subjected to piecewise calculation, so that the accuracy of a repair sequence is improved, the defects of structure breakage, texture error extension and the like are overcome, and the image repair quality is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of digital image processing, and in particular relates to a repair method for murals falling off. Background technique [0002] As one of the four ancient civilizations, my country has a large variety of cultural relics handed down in history, and the carriers are of different types, such as stone carvings, architecture, calligraphy and murals. Among them, the murals have a long history and enjoy a high reputation in the world because of their varied colors and rich information. These murals reflect the beautiful visions and customs of the people at that time, carry the connotation of the development of human history and culture, and have important reference significance for scholars to study ancient civilization. [0003] However, due to the long-term erosion of the natural environment and the influence of human factors, these murals have been severely damaged, and they are prone to various degrees of falling off...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40G06T7/11G06T7/136G06T7/187
CPCG06T5/40G06T7/11G06T7/136G06T7/187G06T5/77G06T5/90
Inventor 胡辽林赵锴郑毅
Owner XIAN UNIV OF TECH
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