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A Matching Method of Surrounding Circular Marking Points Based on Rolling Target

A technology of circular marking and marking points, which is applied in the wind tunnel test field of separation of external objects, can solve problems such as matching of marking points, reduce design difficulty and cost, and improve decoding efficiency

Active Publication Date: 2022-06-28
XIHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Solved the problem of marking point matching in the direction of movement of 6 degrees of freedom in small rolling objects

Method used

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  • A Matching Method of Surrounding Circular Marking Points Based on Rolling Target
  • A Matching Method of Surrounding Circular Marking Points Based on Rolling Target
  • A Matching Method of Surrounding Circular Marking Points Based on Rolling Target

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Embodiment Construction

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0054] Matching method for wrap-around circular markers based on roll targets. It includes the following specific steps:

[0055] Step 1: Design feature coding markers, the feature coding markers refer to a combination of one or more identical circular markers, such as figure 1 shown, has the following characteristics:

[0056] a. Combination styles such as figure 1 The five styles shown are composed of 1, 2, 3, 4, and 5 circular marking points, which are respectively marked as coding marking points of A, B, C, D, and E styles.

[0057] b. For B, C, D, and E style coding marks, the circle centers are collinear, and the distance between the circle centers in each group of patterns is 1.1dmm (d is the diameter of the circle mark), so as to av...

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Abstract

The present invention provides a method for matching circular marking points based on rolling targets, which includes creating feature-coding marking points, wherein the feature-coding marking points refer to a combination of one or more identical circular marking points; creating Surrounding coded circular marking points. Surrounding circular marking points refer to the combination of characteristic coding marking points arranged on the surface of the rolling model of the launch object, which is divided into head and tail. The set of circular marking points at the head is marked as {Head}, The set of tail markers is denoted as {Tail}; extract circular markers and match circular markers. The invention solves the difficult problem of identification and matching of marking points when the wind tunnel model of the external store moves in the direction of 6 degrees of freedom, does not need to open holes for the wind tunnel model of the external store, does not destroy the aerodynamic shape of the wind tunnel model of the external store, and does not change Its structural strength and rigidity reduce the difficulty and cost of designing the wind tunnel model of external objects, improve the decoding efficiency, and are fast.

Description

technical field [0001] The invention relates to the technical field of wind tunnel tests for the separation of external objects, in particular to a method for matching the surrounding circular marking points of a wind tunnel model of external objects. Background technique [0002] The pose measurement of moving objects in high-speed and complex flow fields is an important means to determine the aerodynamic performance of moving objects, such as flight trajectories and motion modes. With the continuous advancement of science and technology, when the object to be measured has the characteristics of high-speed motion and the measured environment is in a complex flow field, the requirements for the accuracy of pose measurement continue to increase, especially in the wind tunnel placement test. High precision measurement requirements. In recent years, monocular vision pose measurement has the advantages of a wide range of measurement motion, no special requirements for experimen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/73G06T7/246G06T9/00
CPCG06T7/73G06T7/246G06T9/00G06T2207/10024
Inventor 董秀成周单任磊朱林梅陈威
Owner XIHUA UNIV
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