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A dual-platform histogram equalization method for infrared images and its application system

A dual-platform histogram, infrared image technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problems of complex dual-platform threshold algorithm, large amount of calculation, difficult to realize in real time, etc., to reduce gray level merging , small computation, good real-time performance

Active Publication Date: 2021-07-20
JIAYING UNIV
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Problems solved by technology

The existing dual-platform threshold algorithm is relatively complex, related to the initial conditions, etc., and has a large amount of calculation, so it is not easy to implement in real time.

Method used

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  • A dual-platform histogram equalization method for infrared images and its application system
  • A dual-platform histogram equalization method for infrared images and its application system
  • A dual-platform histogram equalization method for infrared images and its application system

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Embodiment Construction

[0039] Such as figure 1 As shown, a dual-platform histogram equalization method of an infrared image according to the present invention comprises the following steps:

[0040] S0, acquiring the original infrared image;

[0041] S1, convert the original infrared image into the histogram of the original infrared image, and calculate the first proportion p(k); the first proportion p(k) represents the kth gray level in the original infrared image histogram proportion,

[0042] p(k)=n k / N k=0,1,...,L-1,

[0043] N represents the total number of pixels of the original infrared image, the gray level distribution range of the original infrared image is [0, L-1], n k Indicates the number of pixels that appear in the kth gray level;

[0044] S2. Extract the non-zero units in the first proportion p(k) to form a set {F(n)|1≤n≤M 1}, M 1 is the number of non-zero units in the first proportion p(k);

[0045] S3. According to the information entropy theory, take the average value a o...

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Abstract

The invention discloses a dual-platform histogram equalization method of an infrared image and an application system thereof, comprising: a histogram upper limit platform threshold T H with lower plateau threshold T L The selection and calculation method, the construction of the dual-platform histogram, and the equalization steps of the dual-platform histogram. The advantages are: the enhancement effect on the infrared image is good, the problem of "overbrightness" in the high gray level area is solved, the gray level combination is reduced, and the image details are better preserved. The algorithm is simple, the calculation amount is small, and the real-time performance is good. In addition, there is no need to manually set parameters, so that the value of the dual-platform threshold is more scientific and accurate, and the enhancement effect on infrared images is more obvious, and its applicability is good, and it can have a good enhancement effect on various infrared images.

Description

technical field [0001] The invention relates to the technical field of infrared image enhancement processing, in particular to a dual-platform histogram equalization method for infrared images and an application system thereof. Background technique [0002] In infrared imaging technology, due to the limitations of the inherent resolution of infrared sensors and the absorption and scattering of infrared rays by the atmosphere during transmission, infrared images have disadvantages such as low signal-to-noise ratio, blurred target edges and details. In order to recognize the target correctly, the infrared image must be enhanced and preprocessed. [0003] Histogram equalization (HE) is a commonly used image enhancement method, which adjusts the gray level according to the cumulative histogram of the image to achieve the effect of image enhancement. It has the characteristics of simple operation and good effect on visible light image enhancement. Since the background and noise ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/40
CPCG06T5/40G06T2207/10048
Inventor 龚昌来
Owner JIAYING UNIV
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