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Fragment splicing method and device based on edge information

An edge information and fragmentation technology, applied in the field of image restoration, can solve the problems of reducing the matching accuracy rate, illegal matching pairs, reducing the stitching efficiency, etc., to ensure the accuracy rate, improve the efficiency, and reduce the amount of calculation.

Inactive Publication Date: 2021-05-04
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0013] The ideas based on contour stitching mentioned in the above method can be divided into two types: one is the best priority method, which may lose many correct matches and reduce the efficiency of stitching; the other is global search matching, due to the global Irregularities in the shape of the shards during the search match can lead to a large number of illegal matches, thus reducing the accuracy of the match

Method used

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  • Fragment splicing method and device based on edge information
  • Fragment splicing method and device based on edge information
  • Fragment splicing method and device based on edge information

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Embodiment 1

[0045]This embodiment discloses a fragment splicing method based on edge information, including the following steps:

[0046] Step 1: Scan the fragments to be studied to obtain digital images of the fragments.

[0047] Specifically, since the matching method based on edge information used in the present invention has no high requirements for color, a plane scanner is used to obtain grayscale images of fragments, and white shredded paper and dark background are used to increase contrast and facilitate complete segmentation. .

[0048] Step 2: Perform polygonal approximation on the fragment digital image to obtain the contour; perform feature extraction of the fragment contour to obtain the required information, including the corner point sequence and the gray value sequence.

[0049] Contour extraction: Experimental simulation is carried out to obtain the contour of the fragments and perform edge representation.

[0050] Specifically, because the contrast of the grayscale ima...

Embodiment 2

[0103] The purpose of this embodiment is to provide a computing device.

[0104] A device for splicing fragments based on edge information, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the program, the following steps are implemented, including:

[0105] Contour extraction is performed on the obtained fragment digital image;

[0106] performing feature extraction based on the outline, and obtaining a corner point sequence and a corresponding gray value sequence;

[0107] calculating debris contour edge parameters based on the corner point sequence, and obtaining candidate matching pairs according to the parameters;

[0108] Calculate the correlation between the fragment profiles based on the gray value sequence, and determine the real matching pair from the candidate matching pairs according to the correlation;

[0109] Fragment assembly based on true matching pairs.

Embodiment 3

[0111] The purpose of this embodiment is to provide a computer-readable storage medium.

[0112] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the following steps are performed:

[0113] Contour extraction is performed on the obtained fragment digital image;

[0114] performing feature extraction based on the outline, and obtaining a corner point sequence and a corresponding gray value sequence;

[0115] calculating debris contour edge parameters based on the corner point sequence, and obtaining candidate matching pairs according to the parameters;

[0116] Calculate the correlation between the fragment profiles based on the gray value sequence, and determine the real matching pair from the candidate matching pairs according to the correlation;

[0117] Fragment assembly based on true matching pairs.

[0118] The steps involved in the devices of the above embodiments 2 and 3 correspond to those of...

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Abstract

The present invention discloses a method and device for splicing fragments based on edge information. The method includes: performing contour extraction on the obtained fragment digital image; performing feature extraction based on the contour to obtain a corner point sequence and a corresponding gray value sequence; Calculate the debris contour edge parameters based on the corner point sequence, and obtain candidate matching pairs according to the parameters; calculate the correlation between the fragment contours based on the gray value sequence, and determine the real matching pair from the candidate matching pairs according to the correlation; Fragment assembly of true matching pairs. The present invention can accurately obtain the splicing result of the fragments by screening matching pairs from coarse to fine and the best priority method.

Description

technical field [0001] The invention belongs to the field of image restoration, and in particular relates to a fragment splicing method and device based on edge information. Background technique [0002] A large number of cultural relics and historic sites have been left behind in the course of development in the past dynasties. These things with historical value are our precious wealth. After thousands of years of changes, some historical relics have been destroyed, and a large number of cultural relics unearthed from archaeological excavations urgently need to be repaired to restore their original appearance. Since the manual method of splicing fragments of cultural relics is costly, takes a long time and is likely to cause secondary damage to cultural relics, the automatic splicing technology of fragments has great practical value. Similar problems of recovering original objects from object fragments also exist in fields such as forensic identification. [0003] The sti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40G06T5/00
CPCG06T3/4038G06T5/00
Inventor 辛化梅李晓蕊
Owner SHANDONG NORMAL UNIV
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