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Image detail enhancement method and device based on guided filter regularization parameters and electronic equipment

A guided filter and guided filtering technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of low scene adaptability, inaccuracy, and cumbersome process of infrared image detail enhancement.

Pending Publication Date: 2020-01-24
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that there is a need to manually adjust the key parameter regularization parameter ε of the guiding filter, the scene adaptability is not high, and the process of infrared image detail enhancement is cumbersome and inaccurate.

Method used

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  • Image detail enhancement method and device based on guided filter regularization parameters and electronic equipment
  • Image detail enhancement method and device based on guided filter regularization parameters and electronic equipment
  • Image detail enhancement method and device based on guided filter regularization parameters and electronic equipment

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Embodiment 1

[0037] See figure 1 , figure 1 It is a schematic flowchart of a method for image detail enhancement based on guided filter regularization parameters provided by an embodiment of the present invention. Embodiment 1 of the present invention provides a method for image detail enhancement based on regularization parameters of a guided filter, the method comprising:

[0038] Step S100, calculate the gray level variance of the pixels included in the guide filter window to obtain a statistical histogram of the local variance of the image.

[0039] The image is moved from left to right with a step size of 1, and from top to bottom to obtain the gray level variance of the 9 pixels contained in the guide filter window; construct the gray level variance according to the gray level variance The statistical histogram of the local variance of the image; wherein, the size of the guided filtering window is 3*3; the statistical histogram includes an abscissa and a ordinate, the abscissa is t...

Embodiment 2

[0067] Such as figure 2 as shown, figure 2 A structural diagram of an apparatus for image detail enhancement based on guided filter regularization parameters provided in Embodiment 2 of the present invention. Embodiment 2 of the present invention provides an image detail enhancement device based on guided filter regularization parameters, the device comprising:

[0068] Histogram calculation module 210, the histogram calculation module 210 is used to calculate the gray level variance of the pixels included in the guide filter window, so as to obtain the statistical histogram of the local variance of the image;

[0069] A division module 220, configured to divide the statistical histogram of the local variance of the image according to a preset threshold;

[0070] A parameter calculation module 230, the parameter calculation module 230 is used to obtain a guiding filter parameter according to the division result of the statistical histogram;

[0071] An enhancement module ...

Embodiment 3

[0075] Such as image 3 as shown, image 3 A structural diagram of an electronic device for image detail enhancement based on guided filter regularization parameters provided by Embodiment 3 of the present invention. Embodiment 3 of the present invention provides an electronic device for image detail enhancement based on guided filter regularization parameters, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and operable on the processor 320, When the processor 320 executes the program, the following steps are implemented:

[0076] Calculate the gray level variance of the pixels contained in the guide filter window to obtain a statistical histogram of the local variance of the image;

[0077] dividing the statistical histogram of the local variance of the image according to a preset threshold;

[0078] Obtaining guiding filter parameters according to the division result of the statistical histogram;

[0079] The details of the i...

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Abstract

The invention discloses an image detail enhancement method and device based on guide filter regularization parameters, and electronic equipment, belongs to the technical field of infrared image processing, and comprises the steps: calculating the gray-level variance of pixels contained in a guide filter window, so as to obtain a statistical histogram of the local variance of an image; dividing a statistical histogram of the local variance of the image according to a preset threshold value; obtaining a guided filtering parameter according to a division result of the statistical histogram; and enhancing infrared image details according to the guided filtering parameters. According to the invention, the technical effects of adaptively selecting the regularization parameter epsilon of the guide filter, enhancing the scene adaptability, simplifying the process and improving the accuracy are achieved.

Description

technical field [0001] The invention belongs to the technical field of infrared image processing, and in particular relates to a method, device and electronic equipment for image detail enhancement based on regularization parameters of a guiding filter. Background technique [0002] Compared with visible light images, infrared images can better show the essential differences of objects in some cases because they can directly reflect the thermal radiation of objects. In addition, compared with visible light imaging equipment, infrared thermal imaging equipment has technical characteristics such as passive detection, strong concealment, and unaffected by lighting conditions. Therefore, with the maturity of infrared detector manufacturing technology, infrared thermal imaging technology is widely used in various civilian and military field. [0003] For the existing infrared image processing technology, the traditional infrared image enhancement method is mainly aimed at compre...

Claims

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Application Information

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IPC IPC(8): G06T5/40G06T5/20G06T7/11
CPCG06T5/40G06T5/20G06T7/11G06T2207/10048G06T2207/20024G06T2207/20192
Inventor 周波梁琨
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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