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Projection calibration method for Pepper's ghost display system

A technology of Pepper's phantom and display system, which is applied in the field of virtual display, can solve the problems of positioning accuracy influence, limitation, cumbersome process, etc., and achieve the effect of realizing automation and excellent calibration accuracy

Inactive Publication Date: 2018-05-08
BEIJING WEIMEI YUNXI SOFTWARE CO LTD
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Problems solved by technology

This method is cumbersome and the positioning accuracy is affected and limited by the operator

Method used

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  • Projection calibration method for Pepper's ghost display system
  • Projection calibration method for Pepper's ghost display system

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] The projector model is the process of mapping 2D images to 3D rays, and its calibration requires the establishment of multiple point pairs between the world coordinate system and the projected image plane reference system. The coordinates of the center point of the projected image plane reference system are known, while the coordinates of the center point of the world coordinate system need to be completed with the aid of the camera. The four corner poi...

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Abstract

The invention discloses a projection calibration method for a Pepper's ghost display system, and relates to the technical field of virtual display. A projector model enables a 2D image to be mapped as3D light, and a plurality of point pairs which need to be built between the world coordinate system and a projection image plane reference system are required for the calibration. The coordinates ofthe central point of the projection image plane reference system are known, and the coordinates of the central point of the world coordinate system need to be completed through a camera. Four cornersat the periphery of a calibration plate are detected through the camera, so as to determine the position of the calibration plate. Afterwards, a projection image is projected to the calibration plate.The method can enable a person to be liberated from the tedious calibration operation, and achieves the program automation. The whole calibration time is controlled within 90s, which is equivalent tothe manual calibration time of a skillful worker, wherein the calibration precision of the method is even higher than the precision of the manual calibration.

Description

technical field [0001] The invention relates to the technical field of virtual display, in particular to a projector calibration method in a Pepper's phantom display system. Background technique [0002] The virtual technology of Pepper's Ghost has gradually moved from pure theoretical research to practical application, and will play an increasingly important role in medicine, biology, military, aerospace, sports, automobiles, art and other related fields in the future. In the display system of Pepper's Ghost, a key technology is calibration, which is to establish the mapping relationship between the image coordinates of the target in the projector and the physical coordinates, so that once the coordinates of the target in the projector image are determined, the movement of the projector can be controlled Go to the location of the target to get a clear projected image and other operations. An extreme stupid way to achieve calibration is to calibrate each pixel in the projec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
Inventor 不公告发明人
Owner BEIJING WEIMEI YUNXI SOFTWARE CO LTD
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