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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 inability to accurately detect complex arc curves

Active Publication Date: 2018-12-07
GUANGXI UNIV
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  • Description
  • Claims
  • 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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  • Arc representation and detection method of arbitrary curve in two-dimensional image
  • Arc representation and detection method of arbitrary curve in two-dimensional image
  • 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 invention relates to the technical field of pattern recognition, particularly to an arc representation and detection method of an arbitrary curve in a two-dimensional image and discloses a specific expression of the arc representation specifically. To be specific, the detection method comprises: S201, extracting an edge curve C being equal to {C1, C2,. . . , Cn} of an object in a source imageI0 and acquiring a binary image I1; S202, carrying out traverse processing on the binary image I1 to obtain a labeled image I2, and extracting a linear primitive feature E of a curve; S201, carrying out statistics of positional relationships between all linear primitives in the linear primitive set E and acquiring an arc segment set AC being equal to {A1, A2,. . . , Am}; and S204, calculating an arc representation T at an end point corresponding to each arc segment AC being equal to {A1, A2,. . . , Am}. Compared with the method of straight approximation fitting of a curve, the arc representation and detection method enables the curve to be sub divided into a plurality of arc segments, so that the original curvature information of the curve is ensured, a defect of not detecting the complexarc curve accurately in the prior art is overcome, and the detection accuracy of the complex arc curve is improved.

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 Applications(China)
IPC IPC(8): G06K9/46G06K9/38
CPCG06V10/28G06V10/44
Inventor 林靖宇李明心
Owner GUANGXI UNIV
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