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Method for detecting zebra-crossing-type pedestrian crossing

A crosswalk, zebra crossing technology, applied in biological neural network models, image data processing, instruments, etc., can solve the problem of insignificant background, achieve the effect of good real-time performance, low false detection, and ensure safety

Inactive Publication Date: 2018-11-13
杭州视氪科技有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, in assistive applications for the blind, zebra crosswalks may appear in any direction and are not prominent in the background

Method used

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  • Method for detecting zebra-crossing-type pedestrian crossing
  • Method for detecting zebra-crossing-type pedestrian crossing
  • Method for detecting zebra-crossing-type pedestrian crossing

Examples

Experimental program
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Embodiment Construction

[0037] The present invention relates to a kind of zebra crossing type crosswalk detection method, specifically as follows:

[0038] (1) Collect color image Color, such as figure 2 As shown, the size of the Color area is W×H=area, W is the number of pixels in the horizontal direction of the Color, and H is the number of pixels in the vertical direction of the Color.

[0039] (2) Convert Color to grayscale image. Input the grayscale image or its downsampled image into the neural network, and use the threshold t corresponding to the node with the maximum numerical value in the output layer of the neural network as the binarization threshold, perform threshold segmentation on the grayscale image or its downsampled image, and extract Qualified pixels with a grayscale value greater than t in the grayscale image.

[0040] (3) For all qualified pixels, the region growing method is used to extract connected regions, each connected region is used as a candidate region, and the candidat...

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Abstract

The invention discloses a method for detecting zebra-crossing-type pedestrian crossing. The method utilizes a camera to collect images and utilizes a small processor to process the collected images, and the distance and direction of the zebra-crossing-type pedestrian crossing are output. Through the method, the zebra-crossing-type pedestrian crossing under the different light conditions such as the day and the night can be detected, and the method is low in false detection rate, low in loss detection rate, good in real-time performance and good in cross-platform performance; and the requirements of application scenarios such as visually impaired people crossing a road and unmanned vehicle navigation can be well met.

Description

technical field [0001] The invention belongs to the fields of pattern recognition technology, image processing technology and computer vision technology, and relates to a detection method for a zebra crossing. Background technique [0002] Visual information is the most important source of information for humans to recognize the surrounding environment, and about 80% of the information obtained by humans is input from the visual system. According to the World Health Organization, there are 285 million visually impaired people worldwide. Visually impaired people have lost their normal vision and have difficulty understanding colors and shapes. Many of them now use white canes or guide dogs to assist them in their daily lives. A white cane is not enough to solve all difficulties during travel. Guide dogs can guide the visually impaired to avoid dangers when walking on the road, but because of the high cost of training guide dogs, they cannot be used for all visually impaire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06N3/04G06T7/136
CPCG06T7/136G06V20/588G06N3/045
Inventor 程瑞琦杨恺伦汪凯巍于红雷
Owner 杭州视氪科技有限公司
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