Horizontal plane identifying and real-time water level measuring method based on image processing

Abstract

The invention discloses a horizontal plane identifying and real-time water level measuring method based on image processing. The method aims at detecting the horizontal plane, an image vertical edge detection technology in an image processing technology is used to detect a water level measuring scale, the water level is detected via an image vertical edge detection technology, and real-time waterdepth data is calculated according to pixel values of the water plane and practical length and width information of a mark post. Thus, the position of a water line can be determined accurately, the real-time water depth can be measured, the problems that the horizontal plane is hard to detect, detection tends to be influenced by natural environment, the measuring precision is not high and the likein traditional schemes are solved, and the method has application values in the process of water resource management. The scale which is inserted into the water body is detected correctly to determine the water level, and the problems that the horizontal plane is hard to distinguish, operation is inconvenient and measuring errors are large due to weather, light and the like in traditional image processing based methods are solved.

Description

technical field [0001] The invention belongs to the field of computer vision image processing, in particular to a water level recognition and water level real-time measurement method based on image processing. Background technique [0002] Due to the importance of water security and water resources to social and economic development, domestic water conservancy departments need to take measures to monitor local water level safety. The current main measures include: establishing video surveillance systems in rivers, lakes, reservoirs and other areas; A water level sensor is used to automatically obtain the water level. However, due to the influence of external factors such as light and environment, most of the video monitoring methods only use the real-time browsing of video, video recording and playback of historical records. It takes a certain amount of manpower and material resources, and the effect of the existing monitoring system is not maximized. The water level senso...

AI Technical Summary

Problems solved by technology

However, due to the influence of external factors such as light and environment, most of the video monitoring methods only use the real-time browsing of video, video recording and playback of historical records. It consumes a certain amount of manpower and material resources, and does not maximize the role of the existing monitoring system

The water level sensor has disadvantages such as high cost, difficult maintenance and being easily disturbed by the surrounding environment, which cannot meet the current needs

[0003] When using the traditional method to measure the water level, the position of the horizontal plane is often determined by human eye observation. When the daytime is backlit or the evening light is insufficient, there are often situations where the measurement benchmark and its reflection in the water are blurred and difficult to distinguish. This makes it difficult to determine the position of the horizontal plane

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