Pipeline welding spot deep learning visual inspection method with angle estimation

Abstract

The invention belongs to the technical field of industrial intelligent quality inspection and detection, and particularly relates to a pipeline welding spot visual detection method, system and equipment with angle estimation. The problems that due to the fact an existing pipeline welding spot visual detection method is difficult to adapt to complex scenes with changeable detection scenes, target sizes, shielding and illumination, the pipeline welding spot detection precision is poor and the rotation angle of a local pipeline where a welding spot is located cannot be detected are solved. The method comprises the following steps: acquiring a connecting pipeline scene image of a to-be-detected welding spot as an input image; detecting whether a connecting pipeline in the input image contains a welding spot or not through a pre-trained pipeline welding spot detection model, and if yes, outputting the type, the position, the size and the rotation angle of the welding spot, wherein the pipeline welding spot detection model is constructed based on a deep neural network. The detection precision of the pipeline welding spot is improved, and the problem that the angle of the local pipeline where the welding spot is located cannot be detected is solved.

Description

technical field [0001] The invention belongs to the technical field of industrial intelligent quality inspection and detection, and in particular relates to a visual inspection method, system and equipment for pipeline solder joints with angle estimation. Background technique [0002] Pipeline solder joint positioning inspection is widely used in many fields such as industrial manufacturing, energy transportation, etc., and is an important means of auxiliary welding process quality inspection. For example, in the production process of household refrigerators, the airtightness inspection of the pipeline solder joints in the compressor compartment is often carried out to ensure the circulation of refrigerant gas; in the natural gas, oil and other energy transportation industries, ensuring the airtightness of transportation pipelines is the primary transportation Premise: Before heating in winter, it is necessary to check the tightness of pipeline solder joints to ensure safe h...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the existing pipeline solder joint visual inspection method, it is difficult to adapt to complex scenes with variable detection scenarios, target sizes, occlusions, and changing illumination, resulting in poor detection accuracy and inability to detect pipeline solder joints. To solve the problem of detecting the rotation angle of the local pipeline where the solder joint is located, in the first aspect of the present invention, a method for visual detection of pipeline solder joint with angle estimation is proposed, the method includes:

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