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Landmark-free tracking registering method

A technology for tracking registration and markers, applied to instruments, character and pattern recognition, computer components, etc., can solve problems that affect the stability of the augmented reality system, reduce system operating efficiency, and weak stability, so as to improve matching efficiency and Effects of Accuracy, High Extraction Efficiency, Improving Expressiveness and Adaptability

Inactive Publication Date: 2014-10-01
HOHAI UNIV
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Problems solved by technology

This strategy also faces a problem: the extracted features are not stable in terms of scale and environmental adaptability, and the repeatability is weak. When the scene is deformed, it is easy to cause mismatching and tracking failures, which affects augmented reality. The stability of the system operation, while reducing the operating efficiency of the system

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Embodiment Construction

[0024] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0025] Aiming at the deficiencies in the prior art, the present invention constructs a random forest classification model to quickly initially match the feature points extracted by the CenSurE algorithm, and at the same time, combines the existing feature point continuous tracking technology to continuously track the matching feature points, thereby greatly reducing the number of feature points. While matching the calculations required, the stability of the selected feature points is improved; and the optical flow feature tracking method is further improved, and the wrong tracking points are screened, which improves the accuracy and efficiency of tracking registration and improves the augmented reality system. real-time.

[0026] figure 1 A structural block diagram of an augmented reality system adopting the tracking registration method of the present ...

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Abstract

The invention discloses a landmark-free tracking registering method, and belongs to the technical field of augmented reality. In order to overcome the defects in the prior art, a random forest classification model is constructed, feature points extracted through the CenSurE algorithm are rapidly and initially matched, and the matching feature points are continuously tracked through an existing feature point continuous tracking technology, and therefore the calculation required for feature matching is greatly reduced, and the stability of feature point selection is improved; a light flow feature tracking method is further improved, fault tracking points are screened out, accuracy and efficiency of tracking registering are improved, and the real-time performance of an augmented reality system is improved. Compared with the prior art, the accuracy and the efficiency of tracking registering can be effectively improved, and then the real-time performance of the augmented reality system is improved.

Description

technical field [0001] The invention relates to the field of augmented reality technology, in particular to a marker-free tracking registration method. Background technique [0002] Augmented Reality (AR for short) is a new technology emerging to solve the problem that virtual reality is completely isolated from the real environment and cannot be close to the real world. Augmented reality mainly superimposes virtual three-dimensional objects or two-dimensional information created by computers on the real scene by means of pattern recognition, multimedia, sensors, computer vision and other technologies, and uses display devices to present a combination of virtual and real environments with good visual effects. , to help users better understand and recognize the real world. [0003] In an augmented reality system, tracking and registration technology is a necessary condition for image fusion, and it is crucial to accurately realize "virtual-real fusion". Tracking and registr...

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Application Information

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IPC IPC(8): G06K9/62
Inventor 刘惠义隋建凯
Owner HOHAI UNIV
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