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Multiple belted layer texture separation method applied to tyre X-ray image crown position

A separation method and belt layer technology, applied in image analysis, image data processing, image enhancement, etc., to avoid mutual interference and reduce misjudgment rate

Active Publication Date: 2013-01-09
TIANJIN UNIV +1
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【Content of invention】

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  • Multiple belted layer texture separation method applied to tyre X-ray image crown position
  • Multiple belted layer texture separation method applied to tyre X-ray image crown position
  • Multiple belted layer texture separation method applied to tyre X-ray image crown position

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[0043] Such as figure 1 As shown, the multi-belt layer texture separation method applied to the crown part of the X-ray image of the tire according to the present invention is applied to a sub-image of an appropriate size in the crown part of the X-ray image of the tire. The size of the subimage is 2 9 *2 9 pixels in size, the width of the sub-image covers the left and right edges of the crown.

[0044] Such as figure 2 As shown, the left side is the intercepted image of the tire crown in the X-ray image of the tire. In this image, the textures of multiple belt layers are superimposed on each other, and the textures of each belt layer cannot be distinguished. The three images on the right are the textures of the three belt layers separated after the belt texture separation, and the texture of each belt layer is clearly identifiable.

[0045] Such as image 3 As shown, this is a Gabor filter template generated by using the Gabor filter formula according to the parameters ...

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Abstract

The invention discloses a multiple belted layer texture separation method applied to a tyre X-ray image crown position. Each belted layer is layered by the tyre X-ray image crown position formed by tyre X-ray detection equipment; and a Gabor filter is adopted for accepting or rejecting a tyre X-ray image by aiming at the situation that the frequency spectrum information of the crown position withcomplex textures is formed because the belted layers are overlaid, and the textures of the mutually overlaid belted layers are separated so as to further identify the defects of the crown position. Before the belted layers are separated by the algorithm, the direction, position and texture period information of each belted layer of the crown position is calculated according to the tyre of the same specification, and the frequency spectrum characteristic of each belted layer is further obtained. The distribution position and range of the frequency spectrum information of each belted layer are used for giving parameters, such as a standard deviation, an angle and the like in the Gabor filter, thus forming a corresponding Gabor filter template.

Description

【Technical field】 [0001] The invention relates to a digital image processing method, which is specifically applied to separating multi-texture images in which multiple belt layers are superimposed on each other in the crown part of tire X-ray images into multiple single-texture images. 【Background technique】 [0002] Tires are the main action-executing components of motor vehicles. The stability of tire performance and compliance with safety design standards will directly determine the safety of personnel using motor vehicles. The tire is a circular rotatable body with a cylindrical section, which is made of multi-layer rubber prefabricated materials with steel cords and composite rubber prefabricated materials through lamination, molding, vulcanization and setting. In the tire with the above structure, the constituent materials inevitably have problems such as uneven density of steel cords, breakage of cord steel wires, missing steel cords, and the like. According to the p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T5/00
Inventor 黄战华刘正都强蔡怀宇杭柏林王孔茂
Owner TIANJIN UNIV
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