Truck Brake Cylinder Tilt Detection Method Based on Variance Region Segmentation

A technology of area segmentation and tilt detection, 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: 2021-01-08
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 Tilt Detection Method Based on Variance Region Segmentation
  • Truck Brake Cylinder Tilt Detection Method Based on Variance Region Segmentation
  • Truck Brake Cylinder Tilt 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, which belongs to the technical field of brake cylinder inclination detection. The invention solves the problem that the existing brake cylinder inclination detection method is prone to missed detection and wrong detection. Aiming at the problem of uneven illumination of captured images, the present invention selects threshold values ​​separately for different local area images, avoids the influence of uneven illumination, and thus can ensure the segmentation effect, and then detects the tilt of the brake cylinder according to the segmentation results, improving the detection efficiency. the accuracy rate. By adopting the automatic detection method of the present invention, the occurrence of missed detection and false detection can be avoided to the greatest extent. The invention can be applied to the tilt detection of the brake cylinder.

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 Patents(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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