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Image matching method and device based on edge information

A matching method and edge information technology, which is applied in the field of image recognition, can solve the problems of low accuracy, poor stability, and slow speed of image matching results, and achieve the effects of reducing the amount of calculation, improving accuracy, and reducing matching time

Pending Publication Date: 2022-03-01
HEBEI HANGUANG HEAVY IND
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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention proposes an image matching method and device based on edge information to solve the technical problems of low accuracy, slow speed and poor stability of image matching results in the prior art

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  • Image matching method and device based on edge information
  • Image matching method and device based on edge information
  • Image matching method and device based on edge information

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Embodiment Construction

[0033] First combination figure 1 An image matching method based on an edge information according to an embodiment of the present invention, such as Figure 1-2 As shown, the image matching method based on edge information, including:

[0034] Step S101: Set the number of pyramids layers, the template image and the target image to be tested are layered;

[0035]Step S102: Set the rotation step of the respective layers of the template image; within a circumferential range, according to the rotation step, the template image under each pyramid layer is rotated, and each rotating image is obtained at a time; Rotating image set of each pyramid layer M in Where, i represents the pyramid layer, n represents the number of rotating images in the i-level;

[0036] Step S103: Get the rotating image set M in Edge gradient information of each image;

[0037] Step S104: Get the edge gradient information of each pyramid layer image in the target image to be tested;

[0038] Step S105: The topmost...

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Abstract

The invention provides an image matching method based on edge information. The method comprises the following steps: respectively carrying out pyramid layering on a template image and a to-be-detected target image; setting the rotation step length of each layer of the template image; the template image under each pyramid layer is rotated; acquiring edge gradient information of each image in the rotating image set; acquiring edge gradient information of each pyramid layer image in the target image to be detected; setting a search range of the current pyramid layer based on a result with the maximum similarity in the matching information of the previous layer of the current pyramid layer; matching based on the search range of the current pyramid layer to obtain matching information of the current pyramid layer; the current pyramid layer is the bottommost pyramid layer, and the matching information of the current pyramid layer is recorded as the final matching position of the target. According to the method, rapid, stable and high-precision matching positioning can be realized under the conditions of zooming, rotation, shielding, uneven illumination, disordered background and the like of the target image to be detected.

Description

Technical field [0001] The present invention relates to the field of image recognition, and more particularly to an image matching method and apparatus based on edge information. Background technique [0002] Image matching is a process of finding an image area similar to a template image in a target image to be tested. The existing image matching algorithm is roughly divided into the following categories: grayscale matching algorithm, feature-based matching algorithm, based on the matching algorithm based on the transform domain, based on the model-based matching algorithm. [0003] Among them, the gradation-based matching algorithm is matched by calculating the template image with the grayscale similarity of the target image to be tested. This matching algorithm can achieve more satisfactory results under good illumination, but it is more sensitive to noise, and when the external condition changes or defects in the target image, occlusion, etc., the matching accuracy is large. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V10/24G06V10/44G06V10/74G06K9/62
CPCG06F18/22
Inventor 成妍妍井世丽张响云王禄禄
Owner HEBEI HANGUANG HEAVY IND
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