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An Arc Representation and Detection Method of Arbitrary Curve in Two-dimensional Image

A two-dimensional image and detection method technology, applied in the field of pattern recognition, can solve problems such as the inability to accurately detect complex arc curves, and achieve the effect of overcoming the inability to accurately detect complex arc curves, improving detection accuracy, and high accuracy

Active Publication Date: 2022-04-01
GUANGXI UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides an arc representation and detection method for any curve in a two-dimensional image, which solves the defect that the existing technology cannot accurately detect complex arc curves

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  • An Arc Representation and Detection Method of Arbitrary Curve in Two-dimensional Image
  • An Arc Representation and Detection Method of Arbitrary Curve in Two-dimensional Image
  • An Arc Representation and Detection Method of Arbitrary Curve in Two-dimensional Image

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Embodiment Construction

[0051] In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Orientation structure and operation, therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes, and should not be construed as limitations on this patent. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

[0052] Such as Figure 1-12 As shown, the embodiment of the present invention discloses an arc representation of an arbitrary curve in a two-dimensional i...

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Abstract

The present invention relates to the technical field of pattern recognition, relates to an arc representation and detection method of an arbitrary curve in a two-dimensional image, specifically discloses the specific expression of the arc representation, and also discloses the detection steps: S201, extracting the source image I 0 The edge curve C of the object in the center = {C 1 ,C 2 ,...,C n} get the binary image I 1 ; S202, traversing the binary graph I 1 , get the labeled image I 2 , and extract the line primitive feature E of the curve; S203, count the positional relationship between the line primitives in the line primitive set E, and obtain the arc segment set A C ={A 1 ,A 2 ,...,A m}; S204, find each arc segment A C ={A 1 ,A 2 ,...,A m} The arc at the corresponding endpoint represents T. Compared with the method of approximating a curve fitting with a straight line, the present invention thins the curve into several arc segments to ensure the original curvature information of the curve, overcomes the defect that the existing technology cannot accurately detect complex arc curves, and improves the accuracy of complex circles. Arc curve detection accuracy.

Description

technical field [0001] The invention relates to the technical field of pattern recognition, more specifically, to an arc representation and detection method of an arbitrary curve in a two-dimensional image. Background technique [0002] As an important part of contour features, arc is one of the important topics in feature detection and description. Any curve can be regarded as a combination of arcs, for example, an ellipse can be regarded as a combination of four arcs, a hyperbola can be regarded as a combination of an arc and two rays, and a straight line can be regarded as a circle with zero curvature arc. Compared with describing a curve with a straight line, describing a curve with an arc can better retain the original curvature information of the curve, and is more conducive to the analysis of the shape characteristics of the target, so it is widely used in target tracking, attitude estimation, path planning, target matching, etc. field. [0003] If the arc features...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/40G06V10/28
CPCG06V10/28G06V10/44
Inventor 林靖宇李明心
Owner GUANGXI UNIV
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