A Burr Removal Method for Crack Image
A burr removal and image technology, applied in the field of image processing, can solve the problem that the burr removal method cannot efficiently adapt to crack images, etc., and achieve the effect of reducing processing time and efficiently adapting
Active Publication Date: 2021-01-05
CHONGQING UNIV OF POSTS & TELECOMM
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[0003] The purpose of the present invention is to provide a method for removing burrs from crack images, so as to solve the problems that existing burr removal methods cannot efficiently adapt to crack images of various shapes and structures.
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[0026] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0027] Such as figure 1 As shown, this embodiment provides a method for removing burrs from crack images, including:
[0028] Step S1: Provide the original crack image and perform block processing to obtain several single crack images including one crack, and perform step S2;
[0029] Step S2: Mark the nodes and endpoints of the single fracture image, and scan the single fracture image from the endpoints to determine a number of branches in the fracture, and perform step S3;
[0030] Step S3: When the ratio of...
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According to the crack image burr removing method provided by the invention, a crack blocking technology is combined; the standard for measuring the burr is no longer the length of the scanned branch;the ratio relationship between the number of the target pixel points of the branch and the number of the target points of the crack is taken as the criterion; if less than the threshold value, judging that burrs exist; the whole crack skeleton is taken as a judgment standard, so that simple and complex crack images can be adapted more dynamically. The method has the advantages that the method issuitable for different target pixel point density images, the problem that complex crack skeleton burrs cannot be efficiently removed is solved, the parallel processing mechanism of each single crackafter crack blocking is utilized, the time for removing the burrs of the crack images after blocking can be effectively shortened, and meanwhile the method can efficiently adapt to the crack images ofdifferent structure types.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a method for removing burrs from crack images. Background technique [0002] After the crack image of concrete pavement is thinned, the redundant pixels can be eliminated well, but there will be some branches that are much shorter than the overall length of the skeleton. It is produced by highlighting the part with a large sudden change in width after thinning. Some burrs on the edge of these images are called crack burrs, so the thinned image needs to be further processed. The existing burr removal algorithm judges and deletes burrs according to the step size. When using the step size method to deal with the burrs of the crack skeleton in the complex crack image, the threshold value formula cannot well adapt to the variable scale and structure of the crack skeleton. In complex situations, when the image becomes larger or more complex, the deburring effect will decrease...
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IPC IPC(8): G06T5/00
Inventor 瞿中徐芳琳朱巧宇刘力铭
Owner CHONGQING UNIV OF POSTS & TELECOMM