Truck brake cylinder inclination detection method based on variance region segmentation

A technology of area segmentation and tilt detection, which is applied in the direction of brakes, brake components, brake safety systems, etc., can solve the problems of missed detection and wrong detection, and achieve the effect of avoiding missed detection, improving accuracy and ensuring segmentation effect

Active Publication Date: 2020-10-30
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing brake cylinder tilt detection method is prone to missed detection and false detection, and proposes a truck brake cylinder tilt detection method based on variance area segmentation

Method used

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  • Truck brake cylinder inclination detection method based on variance region segmentation
  • Truck brake cylinder inclination detection method based on variance region segmentation
  • Truck brake cylinder inclination detection method based on variance region segmentation

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specific Embodiment approach 1

[0023] Embodiment 1: A method for detecting the inclination of a truck brake cylinder based on variance region segmentation described in this embodiment, the method specifically includes the following steps:

[0024] Step 1. Obtain an image including the brake cylinder;

[0025] Step 2, using the Gaussian blur method to process the image obtained in step 1 to obtain the processed image;

[0026] Step 3, setting the local area threshold as M×N, and dividing the processed image obtained in step 2 into several local area images whose size is M×N;

[0027] Step 4. Segment each local area image obtained in step 3, divide the pixels contained in each local area image into background and target, and obtain the optimal segmentation threshold T of each local area image respectively, The optimal segmentation threshold T maximizes the inter-class variance between the background and the target of the corresponding local area image;

[0028] Step 5. Using T+ΔT as the new segmentation thr...

specific Embodiment approach 2

[0040] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the image including the brake cylinder obtained in the step 1 is intercepted from the entire truck image based on prior knowledge, and it needs to be extracted The image is resized to a fixed size.

specific Embodiment approach 3

[0041] Embodiment 3: This embodiment differs from Embodiment 2 in that: the whole vehicle image of the truck is obtained by using fixed equipment equipped with a camera or video camera to photograph the running truck.

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Abstract

The invention discloses a truck brake cylinder inclination detection method based on variance region segmentation, and belongs to the technical field of brake cylinder inclination detection. The problem that an existing brake cylinder inclination detection method is prone to missing detection and wrong detection is solved. Aiming at the problem of uneven illumination of the shot image, the threshold values are independently selected for different local area images, the influence caused by uneven illumination is avoided, the segmentation effect can be ensured, the brake cylinder inclination detection is carried out according to the segmentation result, and the detection accuracy is improved. By the adoption of the automatic detection mode, missing detection and wrong detection can be avoided to the maximum extent. The method can be applied to brake cylinder inclination detection.

Description

technical field [0001] The invention belongs to the technical field of brake cylinder tilt detection, and in particular relates to a truck brake cylinder tilt detection method based on variance region segmentation. Background technique [0002] The brake cylinder is part of the train brake system. Its function is to generate braking pressure, control each brake shoe, and make it compress the wheel to produce braking effect. [0003] But when the brake cylinder tilts, it will threaten the driving safety of the train. The current method for detecting the inclination of the brake cylinder mainly checks whether the brake cylinder is tilted by manually observing the 2D image containing the brake cylinder. Since the train inspectors are prone to fatigue and omissions during the work process, it is easy to cause missed inspections and wrong inspections, which in turn affects the safety of train driving. Contents of the invention [0004] The object of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/136B60T17/22
CPCB60T17/228G06T7/0002G06T7/11G06T7/136
Inventor 何鑫
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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