Method for automatically registering raster image and vector electronic map

An electronic map and automatic registration technology, applied in image analysis, image data processing, radio wave measurement systems, etc., can solve the problems of inconsistency between image edge features and vector information, vector information redundancy, matching difficulties, etc.
CN101957987BInactive Publication Date: 2012-12-05TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2012-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for automatically registering a raster image and a vector electronic map, which comprises the following steps of: detecting the characteristic type of the raster image; performing edge extraction to obtain an edge image according to the characteristic type of the raster image; and matching the edge image and the vector electronic map serving as a reference map. In most of conventional registration methods, data sources are required to be consistent; and compared with the prior art, the method has the advantages of capability of realizing the registration of raster data and vector data, and adaptability to the processing of edge lines and centre lines by utilizing two different characteristic extraction methods.
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Description

technical field

[0001] The invention relates to an image change processing method, in particular to an automatic registration method of a grid image and a vector electronic map. Background technique

[0002] In various applications of image change detection, it is a good way to use existing GIS information. GIS data can provide control data for registration and correction of remote sensing images, so that image registration and correction can be quickly and efficiently The key issue is the selection of control points. Generally speaking, the selection of control points is accomplished by matching vectors and images. However, vectors and images are two different types of digital information, and the matching of the two faces many difficulties. The inconsistency of information is caused by: ① Vector information is standardized point, line, and surface data formed through editing, synthesis, and selection, while images are full-element information with continuous gray levels. ...

Claims

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