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Curve matching method and target object shape matching method

A curve, to-be-matched technology, applied in instruments, character and pattern recognition, computer components, etc., can solve the problems of noise sensitivity, multiple parameter adjustment and low efficiency, achieve matching, improve robustness, and speed up efficiency Effect

Active Publication Date: 2018-07-06
NORTHWEST UNIV
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Problems solved by technology

[0005] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a curve matching method, which solves the noise sensitivity, The problem of multiple parameter adjustments and low efficiency

Method used

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  • Curve matching method and target object shape matching method
  • Curve matching method and target object shape matching method

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Embodiment

[0079] Such as Figure 10 Shown is the result of using the method of the present invention to carry out complete curve matching, wherein, (a) is the perfect matching curve pair #1, (b) is the perfect matching curve pair #2, and (c) is the perfect matching curve pair #3; The curves are all three-dimensional curves extracted from the actual scanned three-dimensional model, so there is a certain amount of noise disturbance, but the two given curves to be matched are both completely matched. The experimental results verify that the method of the present invention can obtain accurate matching results for the perfect matching curve with noise disturbance.

[0080] Such as Figure 11 Shown is the result of partial curve matching using the method of the present invention. The curve is a three-dimensional curve extracted from the actual scanned three-dimensional model, so it has certain noise disturbance, and only part of the given two curves to be matched The subcurve segments match...

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Abstract

The invention discloses a curve matching method and a target object shape matching method, and belongs to the field of computer graph and image processing. According to the curve matching method, uniform sampling is performed on the two given curves firstly to obtain sampling points, and a coordinate system and a local cube are locally constructed on each sampling point, wherein the local cube includes the neighborhood points of the sampling points; then the cube is equidistantly divided to obtain multiple small cubes, and the number marking method of the small cubes is designed, wherein the letters of the cube in which the neighborhood points are arranged form sampling point local shape character strings; and finally each sampling point local shape character string forms the curve character mode, and the curve character mode is matched by using the character string matching technology so as to obtain the curve matching relationship. According to the curve matching method, the curve matching relationship can be rapidly and effectively determined without calculating the differential geometric quantity of the sampling points so as to have the advantages of high efficiency, high degree of automation and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of computer graphics and image processing, and relates to a curve matching method and a shape matching method of a target object. Background technique [0002] When observing a target object, people usually notice the outline shape of the target object and the decoration patterns on its surface. Therefore, the shape of an object has a good representational meaning for an object. In the field of computer vision and pattern recognition, the shape of the target can usually be expressed by means of contour curves, and the texture information on the surface of the target object can also be described by curves. Therefore, curve matching is one of the important shape matching methods. Using curve matching The technology can effectively realize the recognition, retrieval, splicing and other processing of target objects, and this technology has a wide range of applications in the fields of target recognition and remo...

Claims

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Application Information

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IPC IPC(8): G06K9/62
CPCG06V10/752
Inventor 张雨禾张顺利陈小雪耿国华周明全
Owner NORTHWEST UNIV
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