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Method used for inquiring thrown object vehicle and system thereof

A technology for throwing objects and vehicles, which is applied in the field of querying throwing objects and vehicles, which can solve the problem of inaccurate query of throwing objects and vehicles, and achieve the effect of avoiding false target alarms

Active Publication Date: 2017-01-04
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is to overcome the inability of the prior art to accurately query vehicles for spilling objects in outdoor road scenes

Method used

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  • Method used for inquiring thrown object vehicle and system thereof
  • Method used for inquiring thrown object vehicle and system thereof
  • Method used for inquiring thrown object vehicle and system thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0071] Considering that trucks, trailers, motorcycles and other cargo vehicles are more likely to be scattered among vehicles running on the road, this embodiment first identifies the number and type of vehicles in the video frames in which the spilled objects and vehicles appear at the same time. Carry out a preliminary query of the vehicle, and then use the method of reverse traversal to finally determine the vehicle of the spilled objects. The following combination figure 2 The steps provided in this embodiment are described in detail.

[0072] figure 2 The detailed processing procedure of step S130 is shown. exist figure 2 , vehicle detection is carried out to identify the number of vehicles and easy-to-spray vehicles (step S210) in video frames in which spills and vehicles appear simultaneously, wherein, in an example, "vehicles that are easy to spill" are defined as trucks, trailers, motorcycles, etc. cargo vehicle. Judging whether the number of vehicles in the v...

Embodiment 2

[0083] In this embodiment, the position of the vehicle is located according to the running track of the vehicle in the monitoring area, so as to query the vehicles within a predetermined range around the spilled object based on the running track of the vehicle, and finally determine the thrown object vehicle by using the reverse traversal method.

[0084] The following combination Figure 4 The specific steps of step S130 in this embodiment will be described in detail. exist Figure 4 Among the video frames in which the spilled objects and the vehicle appear at the same time, locate the video frame in which the scattered objects are in a static state (step S410), and determine the position information of the scattered objects (step S420).

[0085] Obtain the running tracks of all vehicles or vehicles that are prone to spilling in the monitoring area, so as to determine the historical and current position information of passing vehicles, and query vehicles within a predetermin...

Embodiment 3

[0089] back again figure 1 According to the specific application environment of road monitoring, the present invention provides a fast and accurate detection method for spilled object incidents, which can be used in conjunction with the method for confirming the spilled object vehicle in Embodiment 1 or Embodiment 2.

[0090] The following reference Figure 5The detection method of the spill event in step S110 will be described. First, the initial video image sequence of the monitoring area is processed to obtain a foreground image and a background image (step S501). Specifically, the background subtraction method is used to extract the foreground. That is, the current frame image is subtracted from the background model. If the difference is greater than the set threshold, the pixel is judged to be the foreground point, otherwise, the pixel is judged to be the background point. The expression for extracting the foreground target is:

[0091] F ( ...

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Abstract

The invention discloses a method used for inquiring a thrown object vehicle and a system thereof. The method comprises the following steps of according to a video sequence in a monitoring area, detecting a thrown object event; searching a video frame in which a thrown object and a vehicle appear at the same time in the video sequence; and extracting vehicle information from the video frame in which the thrown object and the vehicle appear at the same time so as to determine the thrown object vehicle. The method and the system can adapt to complex and changeable conditions of outdoor road scenes, the thrown object event can be rapidly and accurately detected, false object alarm is effectively avoided, and according to the thrown object event, through reversely traversing and monitoring a video sequence, a target thrown object vehicle is accurately inquired.

Description

technical field [0001] The invention relates to the technical field of video intelligent analysis, in particular to a method and system for inquiring about spilled object vehicles. Background technique [0002] With the rapid development of the economy, the scale of highways has also developed rapidly. Whether it is urban roads or expressways, incidents of throwing objects occur from time to time, which makes traffic problems increasingly serious. On the one hand, the leftovers have seriously affected the appearance of the city, and on the other hand, they have caused serious safety hazards. Therefore, how to accurately detect spilled objects on the highway and eliminate potential safety hazards as soon as possible has become a hot issue in the industry. [0003] The current road spill detection technology faces many problems, such as: first, the complex and changeable outdoor weather environment brings difficulties to the detection of road spills; second, it is difficult t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G06K9/00
Inventor 童超车军蔡巍伟浦世亮
Owner HANGZHOU HIKVISION DIGITAL TECH
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