A Visual Positioning Method Based on Color Blocks and Their Topological Relationships

A visual positioning and topological relationship technology, applied in the field of positioning, can solve the problems of artificial landmarks affecting the speed and accuracy of positioning, difficult processing, image rotation, etc., to save positioning time, reduce the number of samples, and ensure positioning accuracy.

Active Publication Date: 2018-08-31
南京沃尔夫信息技术有限公司
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AI Technical Summary

Problems solved by technology

Among them, the selection of artificial landmarks is the basis of positioning. Although complex artificial landmarks contain more information, their processing is difficult and slow. The rationality of artificial landmarks affects the speed and accuracy of positioning.
During the positioning process, the image may be rotated or deformed due to the rotation or tilt of the camera

Method used

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  • A Visual Positioning Method Based on Color Blocks and Their Topological Relationships
  • A Visual Positioning Method Based on Color Blocks and Their Topological Relationships
  • A Visual Positioning Method Based on Color Blocks and Their Topological Relationships

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Embodiment Construction

[0029] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0030] like figure 1 As shown, the visual positioning method based on color blocks and their topological relationships includes the following five parts:

[0031] 1) Environmental layout: Arrange artificial landmarks at certain intervals on a certain plane, set the location information corresponding to each landmark and establish a corresponding comparison table. When acquiring images, try to keep the distance from the visual sensor to the plane constant, and its optical axis is perpendicular to ...

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Abstract

The invention discloses a visual positioning method based on color blocks and their topological relationships. The artificial road sign image composed of color blocks is obtained and recognized through a visual sensor, and the corresponding position is obtained by using the corresponding relationship between the pre-stored image and the position. coordinate. The given artificial landmarks are unique, and their attributes are easy to extract. The constructed artificial landmark topological pattern is robust to image rotation and distortion. The artificial landmark topological pattern matching method is fast and effective, and can meet the positioning requirements.

Description

technical field [0001] The invention relates to a visual positioning method based on color blocks and their topological relationships, and belongs to the technical field of positioning. Background technique [0002] With the advancement of science and technology and the development of society, there is an increasing demand for location-based services. For example, the Global Positioning System (GPS) performs positioning according to satellite signals, and can provide accurate longitude, latitude, and time information. In addition to positioning based on wireless signals, there are also positioning based on ultrasound, laser and vision. With the improvement of the performance of image acquisition equipment and the development of image processing technology, people pay more and more attention to visual positioning. Visual positioning is to obtain images through visual sensors, and realize positioning according to the information contained in the images. [0003] According to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/73G06T7/66
CPCG06T2207/30204
Inventor 仲伟波关静冯友兵石婕
Owner 南京沃尔夫信息技术有限公司
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