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Millimeter-wave image processing method and system

An image processing and millimeter wave technology, which is applied in the field of processing methods and systems for millimeter wave image enhancement, and can solve problems such as complex mathematical operations, lack of versatility and intuition, etc.

Inactive Publication Date: 2015-04-29
深圳市太赫兹科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem solved by the present invention is to construct a millimeter-wave image processing method and system, which overcomes that the prior art millimeter-wave image processing usually involves more complex mathematical operations, and lacks versatility and intuition

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0023] Such as figure 1 As shown, the specific embodiment of the present invention is: provide a kind of millimeter-wave image processing method, comprise the steps:

[0024] Median filter denoising: first perform median filter on the millimeter wave original image, and then perform linear gray scale stretching on the image in the gray scale range of 0-255.

[0025] The specific implementation process is as follows: Median filtering is a commonly used nonlinear smoothing filter. Its basic principle is to replace the value of a point in a digital image with the median value of each point in a field of the point. Let f(x,y) be the gray value of the image pixel, and the filter window is defined as the median filter of A as follows:

[0026] f^(x,y)=MED{f(x,y)}(x,y)∈A (1)

[0027] Then do linear grayscale stretching in the grayscale range of 0-255 ...

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Abstract

The invention relates to a millimeter-wave image processing method and a millimeter-wave image processing system. The method comprises the steps of carrying out median filtering denoising, non-local filtering, frequency domain high-pass filtering, edge processing and stacking processing on a millimeter-wave image. According to the millimeter-wave image processing method and the millimeter-wave image processing system, the adopted non-local filtering is different from domain filtering adopted in certain methods; by the domain filtering, speckle noise can be filtered to a certain extent, but edge information is fuzzier; the non-local filtering is higher in resistance to the noise, and less geometric structural information is included in a filtered part.

Description

technical field [0001] The present invention relates to a millimeter wave image processing method and system, in particular to a millimeter wave image enhancement processing method and system. Background technique [0002] There are many reasons that affect the resolution and clarity of millimeter-wave images, one of which is that the intensity of millimeter-wave radiation changes due to laser power jitter, which leads to jitters in the gray-scale distribution of millimeter-wave images, that is, there are obvious bright spots. And at the same time, it may be accompanied by the problem that the image background is dark and the contrast is not strong. This patent uses non-local filtering and Butterworth frequency domain filtering to realize denoising and enhancement of millimeter wave images. There are many approaches to noise reduction and enhancement in mmWave imaging. Commonly used are noise reduction, edge detection and enhancement based on wavelet transform. However, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/50
Inventor 刘艺青
Owner 深圳市太赫兹科技有限公司