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Image defogging method based on retina color perception dark channel principle

A color channel and retina technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problem of low self-adaptive ability, achieve the effect of simple method process and improve image visual quality

Active Publication Date: 2019-11-19
XI'AN POLYTECHNIC UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an image defogging method based on the principle of retinal color perception dark channel, comprising the following steps: S1: obtaining the original foggy image; S2: using the retinal color perception mechanism to calculate the foggy image in step S1 , to calculate the three color channels of the color foggy image; S3: use the transmittance estimation function, atmospheric light estimation function and restoration function to restore the foggy image obtained in step S2, and obtain the final output image, which solves the problem of existing The problem of low self-adaptive ability in image defogging technology and further improvement of image visual quality

Method used

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  • Image defogging method based on retina color perception dark channel principle
  • Image defogging method based on retina color perception dark channel principle
  • Image defogging method based on retina color perception dark channel principle

Examples

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Embodiment 1

[0074] An image defogging method based on the principle of retinal color perception dark channel, taking a real color foggy image as an example, includes the following steps:

[0075] S1: Obtain the original foggy image. The original foggy image mainly comes from the real test image datasets at home and abroad, such as figure 2 shown;

[0076] S2: Use the retinal color perception mechanism to calculate the foggy image in step S1, and calculate the three color channels of the color foggy image. The calculation process includes the following steps:

[0077] (1) Calculate the response of retinal bipolar cells, the calculation formula is as follows:

[0078]

[0079]

[0080]

[0081]

[0082] (2) Response of retinal ganglion cells, the calculation formula is as follows:

[0083]

[0084]

[0085] (3) Based on the color perception mechanism of the retinal receptive field in the visual system, color perception calculations are performed on the three color chann...

Embodiment 2

[0127] An image defogging method based on the principle of retinal color perception dark channel, taking the artificially fogged color foggy image as an example, as shown in image 3 Shown is an acquired color image not contaminated by fog, as Figure 4 Shown is the colored foggy image after artificial fogging, such as Figure 5 The image shown is the restored color image. The color foggy image after artificial fogging comes from the commonly used artificially synthesized test image datasets at home and abroad.

[0128] Embodiment 2 adopts the same steps and parameters as Embodiment 1, that is, retinal color perception calculation step 2 is the same as Embodiment 1, and the parameter values ​​are the same as those in Embodiment 1. In step 3, the image is restored based on the dark channel principle , the value of the parameter is the same as that in Example 1. Through objective quality evaluation, for the color foggy image after artificial fogging, the peak signal to noise ra...

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Abstract

The invention discloses an image defogging method based on a retina color perception dark channel principle. The image defogging method comprises the following steps: S1, acquiring an original foggy image; S2, calculating the foggy image in the step S1 by using a retina color perception mechanism, and calculating three color channels of the color foggy image; S3, restoring the foggy image obtainedin the step S2 by adopting a transmissivity estimation function, an atmospheric light estimation function and a restoration function to obtain a final output image. According to the method, the problems of low adaptive capacity and further improvement of image visual quality in the existing image defogging technology are solved, and the method is simple in process and suitable for restoration ofany foggy image.

Description

technical field [0001] The invention belongs to the technical field of computer image processing, and in particular relates to an image defogging method based on the principle of retinal color perception dark channel. Background technique [0002] With the rapid development of computer vision technology and hardware sensor technology, various image or video acquisition technologies have been widely used in important fields such as virtual battlefield, intelligent medical care, aerospace, traffic monitoring and public safety. The reproduction of rich and colorful visual information on electronic devices has a better visual experience in reality, and is more conducive to obtaining accurate visual information in application. [0003] In recent years, human beings' demand for perceiving external things has been increasing, and various image acquisition technologies have been continuously developed, which provides more convenient conditions for the acquisition of visual informati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/90
CPCG06T7/90G06T2207/10024G06T2207/30168G06T5/73Y02A90/10
Inventor 赵雪青师昕樊珂
Owner XI'AN POLYTECHNIC UNIVERSITY