Water level detection method and riverway monitoring method based on machine vision

Abstract

The invention discloses a water level detection method based on machine vision and a riverway monitoring method. The water level detection method comprises the following step that firstly, a water gauge of the following structure is obtained, wherein the water gauge comprises a water gauge body, the water gauge body is coated with water gauge lines, and the water gauge lines comprise characteristic color lines coated in the vertical direction; scale line blocks which are sequentially arranged in a staggered mode in the length direction are arranged on the two sides of the characteristic color lines, each scale line block comprises three characteristic scale lines arranged at intervals, the characteristic scale lines and the characteristic color lines are all coated with red, and white scale lines are coated between every two adjacent characteristic scale lines, so that the scale line blocks and the characteristic color lines form an E shape; the area between the scale line blocks on one side is coated with a blue color block, and the area between the scale line blocks on the other side is coated with numbers. The method has the advantage that the water gauge characters do not need to be recognized.

Description

technical field [0001] The invention relates to the technical field of water level detection, in particular to a machine vision-based water level detection method and a river channel monitoring method. Background technique [0002] Water level is one of the basic hydrological elements of rivers, lakes and reservoirs. Since information such as water supply in cities and irrigation areas, storm and flood flow, runoff sediment and nutrient transfer rates are usually obtained based on water level measurements, continuous and reliable water level monitoring It is of great significance to comprehensively improve the level of early warning and forecasting of flood control and drought relief and the daily supervision of rivers and lakes. The water gauge records the height of the water level through readings, which is the most intuitive and simple measurement tool; however, the traditional water gauge measurement requires manual regular observation, which has a low degree of automati...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent literature discloses a water level recognition method based on a binary coded character water gauge and image processing (public number: CN107367310A), establishes a binary coded character positioning and segmentation model and a binary coded character water scale scale line extraction model, and uses a template matching method Recognize characters, and then convert the water level value. It is difficult to guarantee the accuracy of detection when the image resolution is low and the scale line and characters of the water scale are not clear.

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