A method and device for multi-marker recognition based on AR engine
A recognition method and a technology of marking points, which are applied in image analysis, image enhancement, instruments, etc., can solve the problems of unrecognizable marking points and slow recognition of multi-feature marking points, etc.
Active Publication Date: 2021-07-27
讯飞幻境(北京)科技有限公司
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[0005] In view of this, the object of the present invention is to provide a multi-marker recognition method and device based on an AR engine, so as to solve the problem of only reporting the optimal marker obtained through election when reporting the transformation matrix of markers in the prior art. The slow recognition of multi-feature markers caused by the transformation matrix, and the technical problems that some markers cannot be recognized
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Embodiment 1
[0024] figure 1 It is a flow chart of an AR engine-based multi-marker recognition method provided according to an embodiment of the present invention. Such as figure 1 As shown, the method includes the following steps:
[0025] Step S102, acquire the identification information set of each identification mark point in the first image frame among the plurality of image frames to be identified, wherein the identification information set includes a plurality of identification information, and each identification information is used to represent the corresponding marking point No. a position in an image frame;
[0026] Step S104, performing deduplication processing on the identification information set to obtain the target identification information set;
[0027] Step S106, marking the visible marker points in the marker points based on the target identification information set, and calculating the transformation matrix of the visible marker points to obtain a first transformation...
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Embodiments of the present invention provide a multi-marker recognition method and device based on an AR engine, comprising: obtaining a set of identification information of each identification mark point in the first image frame among multiple image frames to be identified; and removing the set of identification information Reprocessing to obtain the target identification information set; mark the visible marker points in the marker points based on the target identification information set, and calculate the transformation matrix of the visible marker points to obtain the first transformation matrix set; obtain the first transformation matrix set in multiple image frames to be recognized The second transformation matrix set corresponding to the two image frames; deduplicating the second transformation matrix set and the first transformation matrix set to obtain a target transformation matrix set, and reporting the target transformation matrix set for subsequent operations. The invention solves the technical problems of slow identification of multi-feature markers and unrecognizable some markers caused by only reporting the transformation matrix of optimal markers obtained through election when reporting the transformation matrix of markers in the prior art.
Description
technical field [0001] The field of augmented reality technology of the present invention, in particular, relates to a multi-marker recognition method and device based on an AR engine. Background technique [0002] The open source AR (Augmented Reality, Augmented Reality) engine ARToolKit (AR software development toolkit) has some defects in the process of tracking markers (Markers), which makes the rendering effect of AR technology poor, and it is difficult to put it into actual commercial products. [0003] When ARToolKit recognizes multiple Natural Feature Tracking markers (NFTmarkers), it calculates the transformation matrix from the Key Points Matching (KPM) algorithm to the Iterative Closest Point (ICP) algorithm, and then to the Marker transformation The matrix reporting process is to obtain the optimal Marker by election, which makes the recognition speed of multiple NFT markers very slow. In some cases, some Markers in the scene always fail in the election process,...
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IPC IPC(8): G06T7/246
CPCG06T2207/10021G06T7/246
Inventor 闫宏伟赫伽宁后国超侯晓明韩苓
Owner 讯飞幻境(北京)科技有限公司