A Highly Robust Visual Graphic Sign and Its Recognition Method

A recognition method and a highly robust technology, applied in the field of highly robust visual graphic signs and their recognition, can solve the problems of not being able to detect quadrilaterals, etc., and achieve the effect of increasing the available quantity and improving the utilization rate

Active Publication Date: 2018-08-21
深兰自动驾驶研究院(山东)有限公司
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  • Abstract
  • Description
  • Claims
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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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  • A Highly Robust Visual Graphic Sign and Its Recognition Method
  • A Highly Robust Visual Graphic Sign and Its Recognition Method
  • A Highly Robust Visual Graphic Sign and Its Recognition Method

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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] like 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 the...

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Abstract

The invention discloses a highly robust visual graphic sign and its recognition method. The visual graphic sign is a square divided into n*n small squares, and each small square is filled with a different color. Visual graphic signs are coded. The recognition method of the visual graphic sign is to use the color to identify, combine the coding to determine the direction of the visual graphic sign, and use the error detection and error correction function of the coding to solve the problem that the sign is partially blocked, and calculate the visual graphic sign in the augmented reality scene. pose.

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 Patents(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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