Annular code identifier recognition system

Abstract

An annular code identifier recognition system can be used for quickly recognizing many identifiers in the environment in the field of computer vision. The annular code identifier recognition system comprises an identifier system and an image acquiring and processing system, the identifier system comprises many identifiers which are annular code graphs formed of a series of concentric rings, the rings are same in width and with the internal diameter changing from inside to outside according to arithmetic progression, and colors of the rings and the background colors can be optionally selected. The image acquiring and processing system acquires images containing annular codes and only needs to scan the integral images along the same direction and sequence, thus color information of all the annular code identifiers in the images can be obtained; imaging processing operation is low and many identifiers can be quickly recognized.

Description

technical field [0001] The invention relates to a ring code identification recognition system, which can be used in the field of computer vision to quickly identify a large number of identifications in the environment. Background technique [0002] In the field of computer vision, especially in the field of augmented reality, image analysis of signs in the environment can provide relative position and relative attitude information of image acquisition devices (such as cameras). [0003] At present, a type of optical identification is often used, which actively emits light and identifies the identification through flashing, but this requires continuous acquisition of image sequences, and the active light emitting device consumes power. [0004] There is another kind of marking system, which uses two-dimensional graphics (such as two-dimensional codes or other graphics). During image processing, the edge of the graphics must be found first, and then the internal pattern is rec...

AI Technical Summary

Problems solved by technology

[0003] At present, a type of optical identification is often used, which actively emits light and identifies the identification through flashing, but this requires continuous acquisition of image sequences, and the active light emitting device consumes power

[0004] There is another kind of marking system, which uses two-dimensional graphics (such as two-dimensional codes or other graphics), and must first find the edge of the graphics during image processing, and then recognize the internal pattern; when the two-dimensional graphics are not facing the camera, the graphics It needs to be rotated by a certain angle, and it also needs to correct the scale and two-dimensional perspective distortion. A large number of matrix transformations are required, which makes the recognition algorithm more complicated.

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