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Correcting method for large-scale 3D spliced display wall

A splicing display and correction method technology, applied in stereo photography, digital output to display equipment, data processing input/output process, etc., can solve the problems of cumbersome, difficult work, expensive equipment cost, etc., to reduce hardware cost, Reduce maintenance costs and achieve real-time rendering effects

Active Publication Date: 2008-10-22
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

The commercial splicing display walls we see in airports, plazas and some shopping malls either have too low resolution or too obvious seams, and the cost of these devices is very expensive
The traditional geometric correction method is hardware correction: each projector is equipped with a base with multiple adjustment degrees of freedom, and each degree of freedom is manually adjusted (including position, angle, etc.), so that the projection direction of the projector It is a very cumbersome and time-consuming work to be vertical to the projection screen and the adjacent projectors can be spliced ​​and displayed correctly; and this work is especially difficult when the number of projectors is large
Therefore, this method is generally only used in occasions with a small number of projectors

Method used

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  • Correcting method for large-scale 3D spliced display wall
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  • Correcting method for large-scale 3D spliced display wall

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Embodiment Construction

[0037] microcomputer cluster

[0038] The large-screen display wall uses parallel rendering technology, and uses multiple projectors instead of the original single projector to increase the display screen to a corresponding multiple; each projector is driven by a separate computer, and the sharing of computing tasks makes the display speed greatly improved. improve. At the same time, in the real-time graphic display, there is a large amount of network data transmission between each computer, which makes it inevitable to replace the ordinary LAN with a network transmission system with large bandwidth and low delay. This is also the main basis for us to choose a microcomputer cluster. Replace the usual Ethernet card with a high-speed network, thus greatly improving the network transmission speed.

[0039] projection method

[0040] There are two different ways of projection: front projection and rear projection. The so-called front projection means that the projector is instal...

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Abstract

The invention discloses a correction method of large scale three-dimensional paste-up display wall, multi-bench projectors are driven by Linux trunked system, two projectors are a group, and it is separately connected with two outputs of the same trunked node, the images projected by projectors are geometry corrected, marginal anabranched and color corrected by method of computer sight, the projected images are montaged to a uniform three-dimensional display image with high distinguishability and large scale. The invention proceeds seamless geometry correction and color correction based on software and decrease hardware cost greatly; the correction data can be obtained by method of computer sight to decrease the maintenance cost of the display wall greatly; besides, the number of projectors, display size and distinguishability can be configured flexibly according to specific demand, the large scale view can be real-time plotted by adding trunked node.

Description

technical field [0001] The invention relates to an installation correction method for a large-scale stereoscopic display wall used in scientific researches such as visualization and virtual reality. Background technique [0002] With the development of projection technology, the establishment of high-resolution, large-screen display screen splicing display system (also known as projection wall) has become an urgent need for the development of virtual reality and visualization technology. [0003] Modern data visualization (Data Visualization) technology refers to the theory, method and technology of using computer graphics and image processing technology to convert data into graphics or images and display them on the screen for interactive processing. One of its important research contents is to study how to convert scientific data - numerical values ​​and images into visual graphics (images). The following are several important research topics of current visualization rese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14G06F3/147G06T5/00G03B35/20G03B21/00
Inventor 郑耀宋广华解利军张继发黄争舸杨廷俊高文轩潘宁河
Owner ZHEJIANG UNIV
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