Method for realizing virtual three-dimensional superposition through tracking and positioning algorithms

Abstract

The invention discloses a method for realizing virtual three-dimensional superposition through tracking and positioning algorithms. The method comprises the following steps of: 1, presetting characteristic points of a tracked object, taking a plane in which the characteristic points of the tracked object are positioned as a reference plane, determining a world coordinate system by taking any one characteristic point as an original point, and recording a world coordinate value of each characteristic point; 2, recording pixel coordinate values of two frames of image; 3, detecting characteristic points of each frame of images which are subsequently input in the same mode, and calculating an inner parameter N and an outer parameter H of a camera; 4, decomposing an acquired outer parameter matrix to calculate a translation vector and a rotating vector R between the object and the camera; and 5, virtually enhancing the realistic three-dimensional superposition. A video image of which a three-dimensional model is superposed has high three-dimensional stereoscopic sensation and vivid effect.

Description

technical field [0001] The invention belongs to the field of image processing and AR (Augmented Reality, i.e. augmented reality technology), specifically a method for realizing virtual three-dimensional superposition through tracking and positioning algorithms, which can be applied to real-time demonstration of virtual three-dimensional scenes and world coordinate system motion information Get in the system. Background technique [0002] Augmented reality is one of the research hotspots of many well-known foreign universities and research institutions in recent years. AR technology is widely used in VR (Virtual Reality)-related application fields, such as cutting-edge weapons, aircraft research and development, data model visualization, virtual training, entertainment and art. Constructing an AR system needs to solve many key technical problems, mainly including three-dimensional display technology, tracking and positioning technology, interface and visualization technology...

AI Technical Summary

Problems solved by technology

[0003] For indoor application environments, traditional AR implementation methods usually need to place fiducial markers at known positions in advance, and indirectly track the target of interest by identifying and tracking these markers. The advantage is that it can achieve robustness in a definite or controlled environment. High tracking effect, the disadvantage is that it cannot directly extract and track the three-dimensional coordinate information of the target

For outdoor mobile application environments, AR generally uses GPS (Global Positioning System, Global Positioning System) or Dead Reckoning (Dead Reckoning) technology to calculate and track the real-time three-dimensional position of the target of interest outdoors, but due to GPS and Dead Reckoning technology can only roughly calculate the three-dimensional coordinate information of the target, the accuracy is very low, and the calculation time required is too long, which cannot meet the real-time requirements of video image processing

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