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A Method for Planar Multi-Projection Fast Stitching

A fast splicing and multi-projection technology, used in television, optics, instruments, etc., can solve the problems of high personnel requirements and long adjustment time, and achieve the effect of low camera requirements, easy operation, and simple, fast and easy methods.

Active Publication Date: 2017-01-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Most of the traditional planar projection stitching methods use the homography matrix H ci Represent the relationship between the projector image space coordinates and the camera space coordinates, use the projected feature point image (such as a checkerboard) to establish the relationship between the projector coordinates and the camera coordinates, and estimate the optimal H by the least square method ci , this method needs to control the camera, requires high personnel, and takes a long time to adjust
In addition, the existing camera-based automatic plane projection stitching method needs to use a specific type of camera and directly connect to the computer through a data cable, and needs to take multiple images for automatic stitching and fusion

Method used

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  • A Method for Planar Multi-Projection Fast Stitching

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Embodiment Construction

[0021] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] The present invention provides a fast splicing method of plane multi-projection, the projection layout of the method is as follows figure 1 As shown, the specific splicing method includes the following steps:

[0023] Step 1, control all projectors to project solid color images (such as pure blue images) at the same time.

[0024] Step 2: Use any type of digital camera to take projection images from the angle facing the projection surface, and import them into the fusion server.

[0025] Step 3, the fusion server processes the imported image, and divides the entire photo into three parts according to the brightness of the imported image through the automatic threshold image segmentation method: non-projected area (ie, background part), projected area and superimposed projection area. Wherein, the projection area is composed of the projections of ...

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Abstract

The invention discloses a method for quickly splicing multiple projections on a plane. Projection splicing fusion can be quickly and automatically finished by using only one photo right facing a projection screen, so that the steps of using a projector to project a character point pattern (such as chessboard grids and the like), controlling a camera in real time and the like are eliminated. The method is simple, is quickly performed, is easy to perform, and is conveniently operated by laypeople; the camera with specific model is not required by the method, and the requirement of the method on the camera is relatively low.

Description

technical field [0001] The invention relates to a projection splicing display technology, in particular to a fast splicing method for plane multi-projection. Background technique [0002] With the improvement of projection requirements, more and more projections use multiple projectors to project simultaneously. In order to achieve an effective display effect, it is necessary to stitch the projection images of multiple projectors. In recent years, due to the continuous development of projector technology and PC technology and the continuous improvement of people's requirements for visual experience, projection splicing technology has been widely used in virtual simulation, exhibition display, augmented reality and other fields. [0003] Most of the traditional planar projection stitching methods use the homography matrix H ci Represent the relationship between the projector image space coordinates and the camera space coordinates, use the projected feature point image (such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/74G03B21/14
Inventor 翁冬冬李翔刘越杨涛刘万奎
Owner BEIJING INSTITUTE OF TECHNOLOGYGY