Coal flow video detection method under complex background

Abstract

The invention provides a coal flow video detection method under a complex background. Through the method, the granularity and the amount of coal on a conveying belt can be detected in real time through acquired video images. First, a granularity detection area and a coal amount detection area are set in the images to be used for detecting the granularity and the amount of the coal respectively; then, the edge strength of the image of the granularity detection area in the horizontal direction is detected, and thus the coal is divided into lump coal or powdered coal according to the granularity of the coal; finally, a three frame difference method is applied to the image of the coal amount detection area to obtain the coal area on the conveying belt, then, the smallest convex polygon enclosing the coal area is calculated, and the amount of coal on the conveying belt is obtained according to the ratio of the area of the convex polygon to the area of the coal amount detection area. According to the method, influences of environmental factors such as dust and light are little, and various ground and underground environments of a coal mine can be detected accurately in real time in the conveying process of production.

Description

technical field [0001] The invention belongs to the field of image detection, and in particular relates to a coal flow video detection method under a complex background, which can detect the coal particle size and coal volume on a conveyor belt in real time from acquired video images. Background technique [0002] The particle size of coal greatly affects the quality of coal and is an important management indicator in the process of coal production. At the coal production and processing site, coal particle size directly affects the raw coal production and washing process, and coal particle sizes of different grades require different washing methods to process. At present, in coal production sites, both lump coal and pulverized coal are usually transported on the conveyor belt. If the same method is used for subsequent production and processing of coal with different particle sizes, it will not only cause waste of energy, but also may have a serious impact on the production ...

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Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a coal flow video detection method under a complex background, to detect the coal mine particle size and coal quantity on the coal mine production site conveyor belt in real time, and to solve the problems of the prior art. The defects of low degree of automation, poor real-time performance, and great influence of environmental factors

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