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An Image Matching Method Suitable for Automatic Inspection of Aerial Photography Flight Quality

A technology of image matching and aerial photography, which is applied in image analysis, image data processing, instruments, etc., can solve the problems of matching failure and wrong matching, and achieve the effect of correct matching points, simple method steps, and convenient realization

Inactive Publication Date: 2018-04-27
XIAN MEIHANG INFORMATION IND
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an image matching method suitable for automatic inspection of aerial photography flight quality in view of the deficiencies in the above-mentioned prior art. The method has simple steps, reasonable design, convenient implementation and good robustness. The effect is good, and it can solve the problem that the existing matching method is easy to cause matching failure or wrong matching

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  • An Image Matching Method Suitable for Automatic Inspection of Aerial Photography Flight Quality

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Embodiment Construction

[0046] Such as figure 1 An image matching method suitable for automatic inspection of aerial photography flight quality is shown, including the following steps:

[0047] Step 1. Image preprocessing: use a data processor to perform denoising and filtering processing on the two digital images to be matched respectively. The two digital images to be matched are two digital images of the measured area obtained by aerial photogrammetry. Both said digital images are two-dimensional images. The two digital images are respectively a first image and a second image.

[0048] In this embodiment, the resolutions of the two digital images are the same. However, the sizes of the two digital images may be different.

[0049] In this embodiment, when performing denoising and filtering processing on the digital image in step 1, Gaussian smoothing filtering is performed on the digital image first, and then Wallis filtering is performed on the Gaussian smoothing filtered image.

[0050] When...

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Abstract

The invention discloses an image matching method suitable for automatic inspection of aerial photography flight quality, comprising steps: 1. Image preprocessing: denoising and filtering are respectively performed on two digital images to be matched, and the two digital images to be matched are Two digital images of the area to be measured are acquired by aerial photogrammetry; the two digital images are two-dimensional images; two, SIFT feature extraction: the two digital images are respectively processed by the data processor SIFT feature extraction, obtaining all the feature points of the two digital images and the SIFT feature descriptors of each feature point; 3. Constructing a kd tree bidirectional search to determine matching points; 4. Gross error elimination: using RANSAC algorithm to eliminate gross errors. The method of the invention has simple steps, reasonable design, convenient implementation, good robustness and good use effect, and can effectively solve the problem that the existing matching method easily causes matching failure or wrong matching.

Description

technical field [0001] The invention belongs to the technical field of aerial photogrammetry processing, and in particular relates to an image matching method suitable for automatic inspection of flight quality of aerial photography. Background technique [0002] Image matching refers to identifying points with the same name between two or more images through a certain image matching algorithm. Image matching can be used in different fields, such as photogrammetry processing, digital image processing, medical image processing, remote sensing image data processing, etc. Different application fields have different requirements for image matching. For the image matching of the automatic inspection of aerial photography flight quality, the accuracy of the matching points is required to be high, and the accuracy should be within 2 pixels. In practical applications, the matching algorithm is often affected by image noise, image rotation and image deformation, especially in aerial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06K9/46G06K9/62G06K9/64
Inventor 彭桂辉梁菲赵铁梅左涛刘敏郭永春姚春雨王慧芳宋袁龙
Owner XIAN MEIHANG INFORMATION IND
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