Haze monitoring method based on computer vision

A computer vision, haze technology, used in computer parts, computing, instruments, etc.

Inactive Publication Date: 2013-07-24
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The haze monitoring method based on computer vision realizes the measurement

Method used

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  • Haze monitoring method based on computer vision
  • Haze monitoring method based on computer vision
  • Haze monitoring method based on computer vision

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Embodiment Construction

[0080] The present invention will be further described below with specific embodiments in conjunction with the accompanying drawings.

[0081] Such as figure 1 As shown, the embodiment of the present invention uses a digital camera to shoot a preset target. It is recommended to manually pre-select two target areas with darker colors and different distances in the scene as the near target and the far target respectively, so as to monitor the appearance and concentration of haze based on the comparison of visual features between the targets in the image. The digital camera can transmit the image or video of the observed site to the background computer through the data transmission unit through a wired or wireless network. The background computer receives digital image or video data, and based on the calculation of the visual characteristics of the target and the comparison with the sample data under different haze conditions, it gives the monitoring results for haze. The digit...

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Abstract

Provided is a haze monitoring method based on computer vision. The monitoring method includes the steps: collecting data of pre-set far and near target regions which are dark in color in a scene, and giving haze monitoring results based on comparison of the computation of target object visual features and sample images under different haze conditions. Visual features expressing an image comprises color features containing pixel color saturation mean value and blue component mean value, shape features containing feature point number and edge pixel number, textural features containing grey level co-occurrence matrix features and wavelet transform sub-band coefficients, and feature vectors expressing differences between a far target object and a near target object. According to the haze monitoring method based on computer vision, a direct measurement method by means of visual features which is closely associated to manual observation of the haze in principle is put forward, comprehensive monitoring of haze conditions in an entire region is achieved easily, and high-precision monitoring results can be guaranteed with enough sample data.

Description

technical field [0001] The invention relates to the fields of computer digital image processing and pattern recognition, in particular to a computer vision-based haze monitoring method. Background technique [0002] Fog is an aerosol system composed of a large number of tiny water droplets or ice crystals suspended in the air near the surface, and is the product of condensation of water vapor in the air near the surface. The presence of fog reduces air transparency and worsens visibility. The diameter of the droplets is relatively large, and the droplets floating in the air can be seen with the naked eye. Because the light scattered by fog composed of liquid water or ice crystals has little to do with the wavelength, the fog appears milky or bluish white. There is a clear boundary between the fog and the clear sky area, and the distribution of fog concentration is uneven, so the visibility has relatively large fluctuations in the fog. Haze is an aerosol system composed of...

Claims

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Application Information

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IPC IPC(8): G06K9/62
Inventor 赵俭辉黄嘉康王幼平
Owner WUHAN UNIV
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