Method for automatic correction and tiled display of plug-and-play large screen projections

A plug-and-play, automatic correction technology, applied in the direction of digital output to display equipment, color TV parts, TV system parts, etc. question

Active Publication Date: 2013-04-03
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of the above-mentioned existing technologies are suitable for regular screens or flat screens, or require professional knowledge and manual participation in calibration and de

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  • Method for automatic correction and tiled display of plug-and-play large screen projections
  • Method for automatic correction and tiled display of plug-and-play large screen projections
  • Method for automatic correction and tiled display of plug-and-play large screen projections

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Embodiment Construction

[0085] For the sake of simplicity, let's take one projector as an example. Usually, one projector is called single channel, and multiple projectors are called multi-channel:

[0086] First, as described in the summary of the invention, the projector and the camera are respectively connected to the computer, the computer is networked, and the computer connected to the camera is used as a server, and the projector and the camera are placed directly in front of the projection screen, and the camera can be captured. The entire area covered by the projection screen;

[0087] Step (1): For the current irregular projection screen surface, adaptively generate r rows and c columns of the original projection image of a black and white checkerboard with a square grid, and the corresponding number of interior corner points is (r-1)×(c -1);

[0088] Step (1.1): Taking a camera with a resolution of 1024×768 as an example, its ratio of 4:3 is the general resolution ratio of the display devi...

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Abstract

The invention discloses a method for automatic correction and tiled display of plug-and-play large screen projections. The method comprises the steps as follows: adaptively generating a checker pattern with a certain resolution ratio, projecting by projectors in sequence, capturing by cameras, carrying out feature detection and identification on complicated projection surfaces or checkers under the illumination condition with a multi-feature detection method based on color and geometry, and creating a Bezier curve function to represent a corresponding relation of points between projector images and camera images; and obtaining effective display areas for screen projection with a quick approach method, determining a corresponding relation of the projection contents of the projectors and the display areas, carrying out geometrical distortion on the images to be projected for geometrical correction, and calculating weight values of pixels in projection overlapping areas with a distance-based nonlinear weight value distribution method for fusion of edge brightness. According to the invention, a plurality of projection images of irregular surfaces can be aligned and seamlessly spliced, and the whole method is simple and easy to use, higher in autonomy and better in seamless splicing performance.

Description

technical field [0001] The invention relates to a plug-and-play large-screen projection automatic correction and splicing display technology, which belongs to the field of large-screen projection display in multimedia technology. Background technique [0002] Projector-based large-screen seamless display system can provide users with a wide field of view, high resolution, and high brightness realistic experience, and has received increasing attention and applications, such as industrial design and manufacturing, product display, municipal planning and monitoring / Communication command and control, national defense military simulation training, scientific and engineering computing visualization, virtual reality, system simulation and training, and digital entertainment are playing an increasingly important role. [0003] However, in order to construct a practical large-screen projection seamless splicing display, problems such as deformation distortion, geometric registration...

Claims

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Application Information

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IPC IPC(8): G06F3/14G03B21/00H04N5/74
Inventor 解翠王琦董军宇秦勃孙玉娟
Owner OCEAN UNIV OF CHINA
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