An image matching method and device
A matching method and image technology, applied in the field of image processing, can solve the problems of low parameter estimation accuracy and affect the reliability of the matching relationship, and achieve the effect of improving the accuracy and reliability
Inactive Publication Date: 2017-04-26
HUAWEI TECH CO LTD
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However, when the number of wrong matching points is large, using these algorithms to estimate the parameters of the transformation model will also have the problem of low parameter estimation accuracy, which affects the reliability of the matching relationship between the determined images.
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051] An embodiment of the present invention provides an image matching method to improve the accuracy of image matching.
[0052] see figure 1 , which shows a schematic flow chart of an embodiment of an image matching method of the present invention, the method comprising:
[0053] Step 101: Obtain an initial feature point set matched from the first image and the second image.
[0054] The initial feature point set includes multiple pairs of ...
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The invention discloses an image matching method and device. The image matching method comprises the steps of acquiring initial feature point sets matched from a first image and a second image; sequentially based on a matching relation between each pair of feature points in the initial feature point sets, determining projection points of preset reference points in the first image in the second image to obtain multiple projection points; determining at least one first projection point with the distance to a first position with most dense projection points in the second image being greater than a preset threshold value from the multiple projection points; removing the feature point pair corresponding to the first projection point from the initial feature point sets, and determining the matching relation between the first image and the second image according to the residual feature point pairs in the initial feature point sets. The image matching method can improve the accuracy of image matching and the reliability of image matching.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to an image matching method and device. Background technique [0002] Image matching technology has been applied in many fields, such as image registration, object recognition, face recognition, medical image processing, etc. However, no matter what kind of image matching technology is used, the phenomenon of wrong matching cannot be avoided, so that there are many wrong matching points in the matched matching point set. [0003] For the matching relationship between two images, it is necessary to calculate the transformation model parameters between the two images, but when there are a large number of wrong matching points in the matching point set, it will affect the estimation accuracy of the transformation model parameters, and then affect the determination matching relationship between images. Although the random sampling consensus algorithm (RANSAC, Random S...
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IPC IPC(8): G06K9/62
Inventor 李静冯琦
Owner HUAWEI TECH CO LTD