Regular hexagon coding mark and coding method thereof

Abstract

The invention discloses a regular hexagon coding mark and a coding method thereof. The regular hexagon coding mark comprises a pointing pattern, a coding pattern and a regular hexagon background pattern, wherein the coding pattern is composed of a plurality of coding unit patterns. The coding method mainly comprises the following steps: positioning a starting point through a pointing pattern, and determining the positioning of other mark points of a regular hexagon through a calibration method of the coded mark points of the regular hexagon; realizing the classification of coding unit patterns through a coding unit pattern division method; determining the serial number of each coding unit pattern by a serial number sorting method of the coding unit patterns; determining the code of the regular hexagon by the coding pattern, and obtaining the code of the six mark points through the calibration method of the regular hexagon coding mark points and the coding method of the coding pattern. According to the method, the number of feature angular points of the regular hexagon coding mark is large, the coding capacity is large, and the method is stable when three-dimensional data splicing is achieved; and the coding method is simpler and is easy for digital image processing.

Description

technical field [0001] The invention relates to the field of visual measurement in computer vision, and is applicable to the fields of camera calibration, target feature extraction, stereo matching, three-dimensional data splicing and the like, and specifically relates to a regular hexagonal coding mark and a coding method thereof. Background technique [0002] With the advancement of science and technology, in order to solve the measurement problems of large and small sizes and complex backgrounds, visual measurement technology has emerged, and computer vision technology has developed rapidly. Visual measurement technology has the characteristics of non-contact, less susceptible to temperature changes and vibrations, high precision, and good portability. In the field of visual measurement, the difficulty of camera calibration under large field of view and complex background, and how to achieve stereo matching and 3D data stitching for large-scale objects are still research ...

AI Technical Summary

Problems solved by technology

[0003] In order to effectively solve the above problems, the coded marker technology has developed rapidly, and there are many types of coded markers, but most of them are circular, circular or fan-shaped, and these coded markers are used in the face of affine transformed images or large-scale objects. When 3D stitching, the accuracy and precision of the results cannot be guaranteed, and there are many difficulties in the process of encoding and encoding, which is not easy for digital image processing

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