Three-dimension locating method based on three-point collineation marker in video frame

A technology of three-dimensional positioning and video frames, applied in the field of tracking and positioning technology, can solve the problems of tracking and registration algorithm limitations, large viewing plane, etc., and achieve the effect of flexible shape design and natural and reasonable experience

Inactive Publication Date: 2011-10-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an efficient three-dimensional positioning method based on three-point collinear markers, which is used for video images The three-dimensional positioning of the target with three collinear mark points provides a fast and accurate tracking method for linear target positioning and pointing interactive operations in three-dimensional space

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  • Three-dimension locating method based on three-point collineation marker in video frame
  • Three-dimension locating method based on three-point collineation marker in video frame
  • Three-dimension locating method based on three-point collineation marker in video frame

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Embodiment Construction

[0015] The implementation of the present invention will be specifically described below with reference to the accompanying drawings and specific examples.

[0016] attached figure 1 It is a schematic diagram of positioning marker points arranged at three collinear equidistant arrangement. Marker settings should meet the following requirements:

[0017] Ensure the visibility of the camera to the positioning markers during the application process, that is, the positioning markers will not be blocked in the specific application environment; the distance between the positioning markers depends on the specific application environment, according to the size of the tracking target in the actual scene and the field of view of the camera Determine the distance between positioning markers. The distance between positioning markers is proportional to the size of the target and the field of view of the camera. Generally, the larger the target and the wider the field of view, the greater t...

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Abstract

The invention applies to protect a three-dimension locating method based on a three-point collineation marker in a video frame, and relates to the computer vision and image processing technology. The invention, aiming at the defects that the existing track locating algorithm based on plane markers is limited to plane objects and needs larger visual planes, provides a three-dimension locating method based on a three-point collineation marker, which is implemented by obtaining the two-dimensional coordinate information of the locating marker in the video frame, and establishing the relationshipbetween the coordinate of the marker in a locating marker coordinate system and the coordinate of the marker in an image coordinate system to obtain the three-dimension location information and three-dimension posture information of the locating marker in a camera coordinate system. The invention is applied to three-dimension locating of an object having three-point collineation marker in the video frame, and provides a fast and precise tracking method for three-dimension space poin-and-click interactive operation.

Description

technical field [0001] The invention relates to computer vision and image processing technology, in particular to a tracking and positioning technology for a specific target in a video frame. Background technique [0002] Augmented Reality (Augmented Reality) is a technology that uses virtual information to enhance the information of real scenes. Augmented reality takes the physical environment where the user is actually in as the user's main perception and interaction environment, and at the same time generates virtual information including text, two-dimensional images, and three-dimensional objects in real time according to the environment, and superimposes the generated virtual information on the On the output device containing the real scene video, it can achieve the purpose of explanation, information enhancement or three-dimensional display of the real scene where the user is located. [0003] Document "Marker Tracking and HMD Calibration for a video-based AugmentedRe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
Inventor 康波程序贤
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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