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Method capable of automatically tracking moving object in space-augmented reality system

An augmented reality and automatic tracking technology, applied in image data processing, instruments, calculations, etc., can solve problems such as lack of flexibility, increased cost and complexity, and small work scope

Inactive Publication Date: 2013-05-15
周建龙 +1
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Problems solved by technology

3) Mechanical tracking method: use the physical connection of mechanical joints to measure the position and direction of moving objects, and the working range of this method is small
However, on the one hand, the existing technology greatly increases the cost and complexity of system implementation due to the need for additional hardware devices; tracking

Method used

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  • Method capable of automatically tracking moving object in space-augmented reality system
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  • Method capable of automatically tracking moving object in space-augmented reality system

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specific Embodiment approach

[0010] The specific implementation manner of the patent of the present invention comprises the following steps:

[0011] According to the configuration of the attached figure, fix the projector 2 on the rotating base 1 so that the optical axis of the projector 2 coincides with the axis of the rotating base 1 (a line passing through the center of the rotating disk);

[0012] Select any three points on the object trajectory 4 (take the arc-shaped trajectory as an example), and calibrate the projector at the positions of the three selected points. This process obtains the world coordinates corresponding to the three points , according to the geometric theorem and based on the world coordinates of three points, calculate the world coordinate equation of the trajectory of the object on the plane;

[0013] Put the object at a certain point on the motion track, start rotating the disc-shaped rotating base and move the object along the motion track at the same time, and obtain the r...

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Abstract

Provided is a method capable of extending viewport range of a single projector and automatically tracking a moving object in a space-augmented reality system. The method utilizes a disc-shaped rotating base capable of automatically feeding a rotating angle back, the single projector is fixed on the disc-shaped rotating base, and an optical axis of the projector is coincided with an axis of the disc-shaped rotating base. A projection matrix of the projector is simultaneously confirmed and dynamically updated according to a rotation matrix of the projector and a translation matrix of an object. The multiplying order of the matrixes includes that the rotation matrix is multiplied by the current projection matrix, and then multiplied by the translation matrix of the object to acquire a new projection matrix.

Description

technical field [0001] The invention relates to a method for extending the limited viewport range of a single projector and automatically tracking moving objects in a space augmented reality system, especially tracking objects moving along a certain curved track in a large-scale environment. Specifically, the method of using a rotating projector and dynamically updating the projection matrix realizes the automatic tracking of objects moving along a certain trajectory. Background technique [0002] Spatial augmented reality technology is to project different forms of digital information (such as text, graphics, images, videos, animations, etc.) onto the surface of real-world objects through digital projectors, thereby enhancing the description and interaction of real-world objects. The augmented reality system has the characteristics of virtual and real integration and real-time interaction, and has a very broad application prospect in many fields such as medical research, ed...

Claims

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Application Information

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IPC IPC(8): G06T7/20
Inventor 周建龙肖春
Owner 周建龙
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