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High-robustness visual graphical sign and identification method thereof

A technology with high robustness and identification method, applied in the field of augmented reality, can solve the problem of inability to detect quadrilaterals, and achieve the effect of increasing the available quantity and improving the utilization rate

Active Publication Date: 2015-08-26
深兰自动驾驶研究院(山东)有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the design of the black border is to be able to detect the quadrilateral to identify the logo, so the utilization rate of the logo area is 25 / 49=0.51, if the logo is blocked, the system cannot detect the quadrilateral

Method used

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  • High-robustness visual graphical sign and identification method thereof
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  • High-robustness visual graphical sign and identification method thereof

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Embodiment Construction

[0033] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 Shown is a schematic diagram of the visual graphic sign of the present invention, the sign is a square sign composed of 7*7 squares, and it strictly abides by the coding principle of the Hamming code, 1, 2, and 4 are check digits, and 3, 5, 6, and 7 The bit is the information bit. The color design of the color logo is divided into two areas. The inner 3*3 squares in the center of the square are filled with yellow and white. Yellow means binary bit "1", white means binary bit "0", and the outer square The cells are filled with red and blue, where blue represents a binary bit "1" and red represents a binary bit "0". The direction of the sign is judged by the code distance, but because the code word of the Hamming code does not have rotational asymmetry, when the binary bit of the square in the first row and column of ...

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Abstract

The invention discloses a high-robustness visual graphical sign and an identification method thereof. The visual graphical sign is divided into n*n small squares equivalently, the small squares are filled with different colors respectively, and the visual graphical sign is coded on the basis of the colors. The identification method of the visual graphical sign comprises that colors are used for identification, the direction of the visual graphical sign is determined according to codes, the problem that part of the sign is shielded is solved by utilizing the error detection and correction functions of the codes, and the pose of the visual graphical sign in the enhanced real scene is calculated.

Description

technical field [0001] The invention belongs to the technical field of augmented reality, and in particular relates to a highly robust visual graphic sign and a recognition method thereof. Background technique [0002] Augmented reality is a new technology developed on the basis of virtual reality. It is a technology that increases the user's perception of the real world through the information provided by the computer system, applies virtual information to the real world, and superimposes computer-generated virtual objects, scenes or system prompt information on the real scene, so as to realize the realization of reality. enhanced. The tracking and registration technology based on visual signs is currently the most widely used in the development of augmented reality systems. The so-called "sign" refers to a special graphic pattern defined by the user, and the spatial position information of the virtual information is determined by identifying the position of the sign. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06K9/48
CPCG06V10/46G06V10/56
Inventor 刘佳梅建辉王强郑勇顾爽
Owner 深兰自动驾驶研究院(山东)有限公司
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