Multi-vision image dense coupling fusion method and system based on multiple characteristics and multiple constraints

A dense matching and multi-view image technology, applied in image analysis, image enhancement, image data processing, etc., can solve problems such as insufficient density of point clouds, mismatching of texture repeating areas, and "burrs on the edges of linear objects"

Active Publication Date: 2015-12-30
WUHAN UNIV
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Problems solved by technology

[0004] The present invention mainly solves the problems of insufficient density of point clouds generated by traditional dense matching technology, poor texture, serious mismatching phenomenon in texture repeating areas, and serious "burr" phenomenon on the edge of linear features; it provides a multi-feature and multi-constraint based The image dense matc

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  • Multi-vision image dense coupling fusion method and system based on multiple characteristics and multiple constraints
  • Multi-vision image dense coupling fusion method and system based on multiple characteristics and multiple constraints

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[0061] The present invention will be further described in detail below in conjunction with the embodiments and drawings.

[0062] In specific implementation, the method provided by the present invention can be used by a person skilled in the art to implement an automatic operation process by means of computer software. See Picture 9 , The flow of the embodiment includes the following steps:

[0063] The invention can separately process images of different remote sensing platforms, including satellite images, aerial images, low-altitude images and close-range images. Among them, satellite images are satellite slice images with RPC parameters attached; aerial images, low-altitude images, and close-up images are generally frame images with internal and external orientation elements. When composing the survey area image collection, it is required that the survey area images should be taken from the same remote sensing platform as much as possible, or there should be no big difference...

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Abstract

The invention provides a multi-vision image dense coupling fusion method and system based on multiple characteristics and multiple constraints. The method comprises the following steps: according to the multiple constraints, respectively selecting a plurality of images to be coupled for each reference image, obtaining to-be-coupled image sets, and the reference images and corresponding coupling image sets form coupling models; for each coupling model, by use of multi-vision constraint conditions, carrying out half global dense coupling to directly generate a dense coupling result of a single coupling model, and obtaining a corresponding elevation graph; according to elevation smooth constraints between grid points, under the condition of a minimum global energy function, carrying out fusion on the dense coupling results of the multiple coupling models; and through combination with surface characteristics and line characteristics, carrying out point cloud optimization to generate final point clouds. According to the technical scheme provided by the invention, a reasonable stereo image pair can be automatically selected, coupling results are enabled to be more accurate and reliable by use of multi-vision information, optimal multi-vision fusion results with global significance can be obtained, and the point clouds generated through the optimization are finer.

Description

technical field [0001] The present invention relates to the technical field of dense multi-view image matching, in particular to a method and system for dense matching and fusion of multi-view images based on multi-features and multi-constraints. Background technique [0002] The 21st century is an era of informationization. Informatization and digitalization have had a profound impact on social development. As the world is developing from a digital earth to a smart earth, my country is also promoting the rapid development of "digital China" and "smart cities", providing public management, breakthrough services for government departments, enterprises and the public, etc. It is of great significance in service aspects such as emergency response and scientific decision-making. Image intensive matching technology is one of the mainstream methods for obtaining 3D information of ground objects. Cameras are mounted on remote sensing platforms at different heights, such as satellit...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T2207/20221
Inventor 张永军黄旭张彦峰
Owner WUHAN UNIV
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