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An infrared image detail enhancement method and an image enhancement device based on beps filtering

An infrared image and basic image technology, applied in the field of image processing, can solve the problems of artifacts, excessive calculation, and unfavorable implementation.

Active Publication Date: 2019-04-09
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The bilateral filter processing method needs to adjust the data locally in the calculation. Due to the large amount of calculation, it can only be roughly searched by the similarity factor and the brightness similarity factor, which is prone to "artifacts", and the accuracy of the data needs to be improved.
[0006] The guided filter cannot distinguish between details and noise, and the processing effect of the image is not good
[0007] The algorithm of extracting infrared image details with a joint bilateral filter has a large amount of calculation, which is not conducive to engineering implementation

Method used

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  • An infrared image detail enhancement method and an image enhancement device based on beps filtering
  • An infrared image detail enhancement method and an image enhancement device based on beps filtering
  • An infrared image detail enhancement method and an image enhancement device based on beps filtering

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Embodiment 1

[0105] combine figure 1 , 2 , a kind of infrared image enhancement method based on beeps filter that the present invention proposes, comprises the following steps:

[0106] S1. Convert the original infrared image into a 14-16bit basic image;

[0107] S2. Use the beeps algorithm to filter the basic image to extract the base frequency image and detail image;

[0108] S201. Obtain the basic image matrix of the basic image, the image size is i*j, wherein i is the number of pixels contained in the row vector of the basic image matrix, j is the number of pixels contained in the column vector of the basic image matrix, m=ixj;

[0109] S202. Generate a first temporary matrix;

[0110] The pixel values ​​of the first temporary matrix are calculated according to the following formula:

[0111]

[0112] Among them, x[k] represents the pixel value of the kth pixel point from the second pixel value layer by layer starting from the horizontal direction in the basic matrix; φ 1 [k] m...

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Abstract

The invention provides an infrared image detail enhancement method based on beeps filtering. The method comprises the following steps: converting an original infrared image into 14-to-16bit of a basicimage; Filtering the basic image by using a beeps algorithm, and extracting a fundamental frequency image and a detail image; Respectively carrying out enhancement processing on the fundamental frequency image and the detail image; And combining the enhanced fundamental frequency image with the detail image to obtain an enhanced infrared image. The beeps algorithm is applied to infrared image detail processing for the first time, the defect that local pixels are suddenly changed or blurred in the existing image combination technology is overcome, the details of an original image are well enhanced, the calculation efficiency is obviously saved, the time is improved by order of magnitude, and the method has breakthrough significance.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method for enhancing details of infrared images based on beeps filtering. Background technique [0002] Infrared imaging technology has been used in many industrial, civilian and military fields for many years. Infrared digital images have problems such as blurred edges, overall dark, difficult to distinguish details, low contrast, and large noise; the current methods to improve the quality of infrared images can be divided into two aspects, one is to start from the hardware and continuously improve the infrared sensor and The development and production technology level of optical components and other components; the second is to start from the software, use computer and other auxiliary tools to study the infrared image processing algorithm, and achieve the same effect as the hardware to improve the infrared image quality. [0003] Infrared image processing algorithm research i...

Claims

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T2207/10048G06T5/94
Inventor 刘宁李苗苗许吉彭杰曹海杰刘宇昕吴锦植李弈彤马新华杨超
Owner NANJING UNIV OF POSTS & TELECOMM
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