Geometrical correction device and method for 360-degree annular screen multi-projection system

Abstract

The present invention discloses a geometrical correction device and method for 360-degree annular screen multi-projection system, The geometrical correction device comprises an annular screen, projection arrays for multi-screen projection image to the ring, and said plurality of array controllers connected to the projector, the an annular row of points on the map with the standard screen, the standard distribution of the spot diagram in standard dot array, and a projection projected to the array through multiple pre-distortion annular row of points on the map screen, further comprising means for collecting said annular screen image acquisition device, said controller further configured to receive said captured image acquisition device for image analysis and correction on the display. The present invention also discloses a geometrical correction method for a 360-degree annular screen multi-projection system. The present invention is simple to operate, through the initial setup, calibration process without human intervention, a high degree of automation.

Description

technical field [0001] The invention relates to the technical fields of computer graphics and projection, in particular to a geometric correction device for a 360° circular screen multi-projection system. Background technique [0002] With the continuous development of modern technology, people have higher and higher requirements for visual image technology. Traditional liquid crystal display, projection display and other flat-panel display technologies have encountered bottlenecks in various technical indicators such as resolution, contrast, and response speed, and the rapid development of ring-screen display systems will follow. The ring screen display system is composed of multiple projectors (channels) and a ring projection screen, and the screen angle usually ranges from 100° to 360°. Due to its large screen radius, the audience's vision is completely surrounded, and with the surround sound system, the participants can fully experience a highly immersive three-dimensio...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing multi-projection system automatic correction methods are aimed at arc screens less than 180°. For example, the invention patent with the patent publication number 102841767A discloses a multi-projection splicing geometric correction method and correction device, and specifically proposes a method based on The calculation of the mapping relationship between the projector, the projection screen and the camera, and the method of correcting the distortion of the projector and the geometric position of the image, but it has its application limitations, such as it cannot be applied to a 360° projection display

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