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Image same name point matching method and device

A matching method and a technology of a matching device, which are applied to instruments, character and pattern recognition, computer components, etc., can solve the problems of low matching accuracy and low efficiency of points with the same name

Inactive Publication Date: 2016-12-28
中测高科(北京)测绘工程技术有限责任公司
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Problems solved by technology

[0004] The present invention provides a matching method and device for image homonym points, which solves the technical problems of low matching accuracy and low efficiency of homonym point matching in images acquired under complex shooting conditions in the prior art

Method used

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  • Image same name point matching method and device
  • Image same name point matching method and device
  • Image same name point matching method and device

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Embodiment Construction

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] A flow chart of a method for matching image homonym points provided by the present invention, such as figure 1 shown, including:

[0028] Step 101, acquiring at least two images;

[0029] Step 102, perform feature extraction on the image to obtain a stable first feature point set, determine the direction of the feature points in the first feature point set, and obtain a feature vector;

[0030] Wherein, step 102 needs to be executed for all acquired images, and the feature extraction includes SIFT feature extraction, HARRIS feature extraction, and SUSAN feature extraction. When the feature extraction is SIFT feature extraction, the image is subjected to feature extraction in step 102 to obtain a stable first set of featur...

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Abstract

The invention relates to the field of computer graphics, and discloses an image same name point matching method and device. At least two images are acquired; feature extraction of the images is performed so as to acquire a stable first feature point set; feature point matching is performed between two different first feature point sets so as to generate a second feature point set, and the corresponding pixel point set of the second feature point set in the corresponding images is acquired by using a correlation inverse algorithm; similar area expanding is performed in the pixel point set according to the image scale and the image features; the area ratio of the similar areas in the two images is calculated; the Euclidean distance or the correlation coefficient of the point sets in the similar areas in the two images is calculated so as to calculate the matching degree of the similar areas in the two images; and a same name point set is acquired when the matching degree is greater than a preset threshold so that same name point matching identification of the photographed images can be performed without acquiring the technical parameters of image photographing.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to a method and device for matching image homonym points. Background technique [0002] In recent years, with the development of the economy and society, portable camera equipment has become popular, and there are more and more means of image acquisition. It is necessary to splicing and fusing the captured images. Moving objects for tracking etc. It is necessary to extract the same-named points from different images taken of the same object, that is, to perform the same-named point matching. [0003] Homogenous point matching of images is a core problem in computer graphics and photogrammetry. The exact matching of homonymous points is one of the key technologies in the research fields of image stitching and fusion, image 3D reconstruction, and object recognition in images with the same name in image processing technology. The matching accuracy of the point with the same name dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06V10/759G06V10/757
Inventor 曹萌范荣双郑君贺鹏艳马远向张永
Owner 中测高科(北京)测绘工程技术有限责任公司
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