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Image registration method and apparatus

An image registration and image technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of insufficient matching accuracy and long time consumption, and achieve the effect of simple structure, high efficiency and good accuracy

Inactive Publication Date: 2017-07-28
SUZHOU SIGMA BUILDING INTELLIGENT ENG
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Problems solved by technology

However, the feature vector constructed by the M-SURF feature descriptor used by the AKAZE method takes a long time in the process of feature matching and the matching accuracy is not high enough.

Method used

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  • Image registration method and apparatus

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Embodiment Construction

[0049] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] In order to achieve the purpose of the present invention, in some embodiments of an image registration method and device,

[0051] Such as figure 1 As shown, an image registration method specifically includes the following steps:

[0052] 1) Carry out image feature extraction;

[0053] 2) Introduce the gray moment into the LDB descriptor to construct the main direction of the feature point. When describing the feature point, rotate the neighborhood image block of the feature point to the main direction to construct the descriptor;

[0054] 3) Carry out feature matching between images;

[0055] 4) Find the best matching point.

[0056] Step 1) specifically comprises the following steps:

[0057] 1.1) Use the nonlinear diffusion method and the principle of FED to solve the implicit difference equation to construct the nonlinear scal...

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Abstract

The invention discloses an image registration method and apparatus. The image registration method includes the following steps: 1) performing extraction of image characteristics; 2) introducing a gray moment into an LDB (Local Difference Binary) descriptor, constructing the main direction of the characteristic points, rotating the neighborhood image blocks of the characteristic points to the main direction when describing the characteristic points, and then constructing a descriptor; 3) performing characteristic matching on images; and 4) looking for the optimum matching point. The image registration method and apparatus can further improve the speed and the accuracy during the image registration process, and can utilize the Hamming distance to measure the similarity between the image characteristics, thus reducing the computational complexity and improving the registering speed.

Description

technical field [0001] The invention relates to the fields of intelligent identification and image processing, in particular to an image registration method and device. Background technique [0002] In the field of video images, for blurred image processing, multiple images of the same scene are often required for reconstruction to improve the resolution. To achieve this goal, registration between two or even multiple images is required. Image registration is the process of processing two or more images with overlapping areas taken by the same scene at different times, different perspectives or different sensors. It is widely used in computer vision, remote sensing technology, medical image processing, image fusion, image Super-resolution reconstruction and other fields have a wide range of applications. [0003] The existing common methods of image registration include gray information method, method based on transform domain and method based on feature. [0004] 1) The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
Inventor 吴含前李程超张君华沈鸣飞
Owner SUZHOU SIGMA BUILDING INTELLIGENT ENG
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