A method and system for rapid detection and early warning of road targets

A target detection and target technology, applied in the field of computer vision, can solve the problems of undetectable early warning, etc., and achieve the effect of avoiding the detection of smaller targets, improving speed, and fast and accurate detection and early warning

Active Publication Date: 2021-01-19
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a method and system for rapid detection and early warning of road targets, thereby solving the technical problem in the prior art that detection and early warning of targets located on the driving route cannot be performed quickly and accurately

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  • A method and system for rapid detection and early warning of road targets
  • A method and system for rapid detection and early warning of road targets
  • A method and system for rapid detection and early warning of road targets

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Embodiment 1

[0088] A method for rapid detection and early warning of road targets, when N is 3 and the target is a pedestrian, comprises the following steps:

[0089] Step 1: Collect road scene images, analyze the collected road scene images, and extract the trajectory and intersection of lane lines in the image; set the center of the image as the intersection of lane lines. Analyze the relationship f between the pixel height of pedestrians in the collected image and the distance of pedestrians; set the detection threshold Thr of pedestrian height ratio to 0.5.

[0090] Set the closest detected pedestrian distance to 5 meters. According to the relationship f, the pixel height of the pedestrian at 5 meters is 480, and the length and width of the first-level ROI are set to 480. (At this time, the aspect ratio of the road scene image is 1)

[0091] The sub-picture length and width of the first-level ROI are 480, and the minimum pedestrian height ratio threshold is set at 0.5, and the minim...

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Abstract

The invention discloses a method and system for rapid detection and early warning of road targets, which belong to the field of computer vision. Area of ​​interest: according to the order of the target distance from near to far, target detection is performed on the N-level area of ​​interest in sequence. After a target is detected in a certain level of interest area with a relatively short distance to the target, an early warning will be issued, and subsequent levels will not be detected. The region of interest is detected; wherein, N≥2, the target distance is the distance between the target and the image acquisition device. Compared with the existing detection and early warning algorithms for pedestrians, vehicles and other targets, the present invention can more quickly and accurately detect and warn the targets appearing on the driving route, and has good practical value.

Description

technical field [0001] The invention belongs to the field of computer vision, and more specifically relates to a method and system for rapid detection and early warning of road targets. Background technique [0002] Pedestrian and vehicle detection technologies are widely used in assisted driving systems. In urban traffic scenarios, how to avoid traffic accidents has always been a hot issue. The current assisted driving mainly uses pedestrian and vehicle detection technology to detect and analyze the image in front of the driving motor vehicle, and actively alarms pedestrians and vehicles, which can assist the driver to avoid in advance and prevent traffic accidents. The current pedestrian and vehicle detection technology mainly uses related algorithms based on deep learning to detect and recognize pedestrians, vehicles and other targets in the input image. An important requirement of the assisted driving system is real-time performance. Vehicles travel very fast compared...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/32G06N3/04G06N3/08
CPCG06N3/084G06V20/588G06V10/25G06V2201/07G06N3/045
Inventor 陶文兵石京磊
Owner HUAZHONG UNIV OF SCI & TECH
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