Three-dimensional template automatic matching method of pantograph image

An automatic matching, three-dimensional template technology, applied in image data processing, combustion engine, character and pattern recognition, etc., to achieve the effect of improving efficiency, simplifying algorithm burden, and high labor cost

Active Publication Date: 2020-06-09
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to face the pantograph image segmentation and retrieval method under the complex background of any angle in the railway field environment, so as to solve the basic problem of pixel-level positioning in the automatic analysis of the current state of the pantograph

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  • Three-dimensional template automatic matching method of pantograph image

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Embodiment Construction

[0051] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] The basic idea of ​​the present invention is as follows: Aiming at the defect that the existing intelligent identification method relies on massive manual data labeling, it aims to effectively introduce the prior knowledge of the three-dimensional model of the pantograph into the electric locomotive pantograph state analysis system, and innovatively proposes a A 3D template intelligent matching method for pantograph images, which combines model-driven and data-driven paradigms to serve self-supervised pantograph model matching training. The invention mainly consists of a pantograph three-dimensional model visualization module with adjustable state and a pantograph attitude estimation algorithm module. The user specifies the task training parameters of the pantograph attitude through the program parameters, and then u...

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Abstract

The invention discloses an automatic matching method for a three-dimensional template of a pantograph image. The invention discloses pantograph posture recognition operator offline self-supervised learning based on pantograph three-dimensional model virtual simulation. A pantograph three-dimensional model is used to generate an image sample to be identified and label data based on a graphic technology, and a pantograph attitude recognition algorithm module is trained, so that the pantograph attitude recognition algorithm module is guided by an optical flow field during microcosmic adjustment,and is based on previously accumulated experience during macrocosmic adjustment; and then, verifying and improving a pantograph attitude estimation operator on a real pantograph image actually measured on site. According to the invention, a data statistics model and a three-dimensional imaging mechanism model are integrated; graph and image processing technologies are integrated, priori knowledgeof the railway industry is fully utilized, the data completeness problem of insufficient or incomplete samples in practice is effectively solved, a technical scheme for railway detection equipment model training in a weak supervision mode is provided, and the method can be expanded to various industrial applications.

Description

technical field [0001] The invention belongs to the field of video monitoring of locomotive pantograph states in electrified rail transit, and in particular relates to a three-dimensional template automatic matching method for pantograph images. Background technique [0002] The pantograph of an electric locomotive is the key for electrified railway vehicles to obtain traction power from the catenary. It is designed as a contact-type electrical energy transmission device between the locomotive body and the catenary. The pantograph is installed on the roof of the locomotive or motor car, and the pantograph slide plate is connected to the contact wire of the traction grid through the lifting bow, and the electric traction locomotive obtains electric energy from the catenary; on the contrary, the pantograph and the contact wire are connected through the lowering bow separate. Specifically, the process of raising and lowering the pantograph is as follows: when raising the bow, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T19/20G06K9/62
CPCG06T19/20G06T2219/2016G06F18/24G06F18/214Y02T10/40
Inventor 唐鹏金炜东
Owner SOUTHWEST JIAOTONG UNIV
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