Haze diffusion path mapping and source determination method based on surveillance video
A technology of diffusion path and monitoring video, applied in image data processing, instrument, character and pattern recognition, etc., can solve the problem of inability to effectively monitor the source of haze in real time and determine the responsible subject.
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[0019] The invention solves the problem of how to monitor the direct source of the haze in real time. Through the gridded urban area, the monitoring video haze level change analysis and time-varying analysis are used to draw the current haze diffusion path in real time, and then determine the specific haze source grid and determine the source subject. The implementation is as follows:
[0020] 1. Mesh division: According to the geographical location, determine the appropriate size of the grid, and divide the area to be monitored into a grid. Statistically obtain road and video monitoring data in the grid area, and establish an image sample library of all-weather, multi-temporal haze-free benchmark monitoring areas.
[0021] 2. Image haze level recognition: (a) Determine the time interval of image collection, and collect surveillance video images in real time. (b) Remove invalid images, extract image contrast changes, gradient changes, and visibility information, and determin...
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