Reading identification method and device for liquid level meter

Abstract

The invention discloses a reading identification method and device for a liquid level meter. According to the method and device, the reading of the liquid level meter can be accurately identified evenunder the condition that the quality of an acquired image is poor. The reading identification method for the liquid level meter comprises the steps of: obtaining a to-be-detected image containing a first liquid level meter, and determining position information of the first liquid level meter in the to-be-detected image based on a target detection model; recognizing an image area where the first liquid level meter is located according to the image classification model, and determining a first range value of the first liquid level meter; according to the image segmentation model, segmenting theimage area where the first liquid level meter is located into multiple sub-areas, wherein the multiple sub-areas at least comprise a liquid level sub-area and a non-liquid level sub-area, and the liquid level sub-area corresponds to a liquid filling part in the first liquid level meter; and determining the reading of the first liquid level meter according to the proportional relation among the first length value of the liquid level sub-region, the second length value of the non-liquid level sub-region and the first range value.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a reading recognition method and device of a liquid level gauge. Background technique [0002] At present, liquid level gauges are widely used in various industrial scenarios. For example, in oil and gas field factories, it is possible to judge whether the production process is normal by detecting the liquid level of the liquid level gauge. In the traditional way, it mainly depends on the inspection personnel of the factory to actually arrive at the scene to read and record the liquid level of the liquid level gauge. However, this method has poor real-time performance and is not suitable for scenarios that require high real-time performance. [0003] Therefore, in the prior art, the liquid level reading of the liquid level gauge is often obtained in real time by means of inspection robots or remote video monitoring, that is, by acquiring the image of the liquid level ga...

AI Technical Summary

Problems solved by technology

However, considering the interference of external environmental factors, such as light changes, the image quality of the acquired liquid level gauge will be affected, and the scale line of the liquid level gauge and its corresponding reading cannot be accurately distinguished, making the reading of the liquid level gauge inaccurate. too accurate

[0004] It can be seen that the reading recognition method of the liquid level gauge in the prior art has high requirements on the image quality. Once the acquired image quality is poor, the accuracy of the reading recognition may be poor or even impossible due to the loss of the reference reference.

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