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A real-time high dynamic range rendering method and device for railway inspection images

A high dynamic range, image technology, applied in the field of image processing, can solve problems such as heavy maintenance workload, unguaranteed inspection accuracy, and large weather impact

Active Publication Date: 2018-08-14
CHINA ACADEMY OF RAILWAY SCI CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems in the way of manual inspection on the road, such as low safety on the road, heavy maintenance workload, waste of human resources, low efficiency of skylight work, unguaranteed inspection accuracy, and greater influence by the weather.
Aiming at the disadvantages of manual road inspection, no effective solution has been proposed yet

Method used

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  • A real-time high dynamic range rendering method and device for railway inspection images
  • A real-time high dynamic range rendering method and device for railway inspection images
  • A real-time high dynamic range rendering method and device for railway inspection images

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Experimental program
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Embodiment 1

[0052] This embodiment provides a real-time high dynamic range drawing method for railway inspection images. The execution subject of the method is an inspection vehicle capable of data interaction and a high-performance image processing industrial computer; the inspection vehicle equipped with an image acquisition unit The image is collected, and the high-performance image processing industrial computer completes the image collection, preprocessing and storage work, so as to implement the real-time high dynamic range rendering method of the railway inspection image proposed in this embodiment.

[0053] see figure 1 , is a schematic diagram of the installation of the camera on the inspection vehicle of this embodiment. The camera used in the present invention is a high column camera on the roof and a camera on the outside of the track. The roof camera adopts an area array camera, which is suitable for a large field of view and a large depth of field; The outer side of the trac...

Embodiment 2

[0122] see image 3 , the present embodiment provides a real-time high dynamic range rendering device for railway inspection images, which is used to execute the above-mentioned real-time high dynamic range rendering method for railway inspection images, including:

[0123] The acquisition module 300 is used to trigger the image acquisition unit provided on the inspection vehicle to acquire the image of the electrical trackside equipment according to the set image acquisition time; wherein, the image is a grayscale image;

[0124] The preprocessing module 302 is used to input the collected images of the electric wayside equipment into the image preprocessing model, and the input images successively go through the global adaptive processing, local adaptive processing and histogram truncation in the image preprocessing model. Stretching processing, output images drawn with high dynamic range with uniform brightness and suitable for human observation and browsing;

[0125] Among...

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Abstract

The invention provides a real-time high dynamic range drawing method and device of a railway patrol image. The method comprises steps of triggering an image acquiring unit arranged on a patrolling vehicle to acquire images of devices near an electric service rail according to set image acquisition time; inputting the acquired images of the devices near the electric service rail to an image preprocessing model; and after successively carrying out overall self-adaption processing, local self-adaption processing and histogram cutting-off / stretching processing on the input images via the image preprocessing module, outputting images with uniform brightness which is drawn in a high dynamic range and can be observed and browsed by eyes. According to the invention, a maintainer can patrol the devices near the electric service rail according to the processed images, so working efficiency of patrolling of the devices near the electric service rail is increased.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for real-time high dynamic range rendering of railway inspection images. Background technique [0002] At present, there is no intelligent inspection system for electric trackside equipment used in the actual inspection of electric trackside equipment. This invention is the first case to realize real-time high dynamics of electric trackside equipment in the intelligent inspection system for electric trackside equipment Range drawing function. At present, the routine inspection work of railway trackside equipment in various railway bureaus mainly relies on the way of manual access. The relevant staff in the work area walk more than ten kilometers on foot during the skylight time at night, and use portable lighting equipment such as flashlights to conduct inspections. The content is mainly based on the appearance of the device. There are many problems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
CPCG06T5/001G06T2207/10004G06T2207/20008G06T2207/20012
Inventor 杜馨瑜高利民吴楠程雨
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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