Method and device for obtaining evidences for illegal parking of a vehicle

Patent metadata

Field	Value
Publication number	US-10229588-B2
Application number	US-201515516795-A
Country	US
Kind code	B2
Filing date	Dec 14, 2015
Priority date	Jan 26, 2015
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

The present application relates to the field of monitoring, and discloses a method and a device for obtaining evidences for illegal parking of a vehicle. In the method for obtaining evidences of the present application, a correspondence relationship between shooting positioning parameters of a first camera and a second camera is preset. The method for obtaining evidences comprises: taking a first photo of an illegally parked vehicle using the first camera and obtaining a current first shooting positioning parameter of the first camera; according to the correspondence relationship, calculating a second shooting positioning parameter of the second camera corresponding to the first shooting positioning parameter and controlling the second camera to take a second photo with the second shooting positioning parameter. Thereby the photos of the head and rear of the illegally parked vehicle are obtained simultaneously as the evidences for illegal parking for penalty.

First claim

The invention claimed is:

1. A method for obtaining evidences for illegal parking of a vehicle, wherein, a correspondence relationship between shooting positioning parameters of a first camera and a second camera is preset, the method comprises following steps;
taking a first photo of an illegally parked vehicle using the first camera and obtaining a current first shooting positioning parameter of the first camera;
calculating a second shooting positioning parameter of the second camera corresponding to the first shooting positioning parameter according to the correspondence relationship, and controlling the second camera to take a second photo with the second shooting positioning parameter, wherein the first photo is a photo of a vehicle head and the second photo is a photo of a vehicle rear, or the first photo is a photo of a vehicle rear and the second photo is a photo of a vehicle head;
determining whether the vehicle for which the first photo is taken and the vehicle for which the second photo is taken are the same one by an image analysis technique; and
if the vehicle for which the first photo is taken and the vehicle for which the second photo is taken are the same one, storing the first photo and the second photo as evidences for illegal parking.

2. The method for obtaining evidences for illegal parking of a vehicle according to claim 1 , wherein, after taking a first photo of an illegally parked vehicle using the first camera, the method further comprises following steps:
if resolution of a license plate in the first photo is lower than a first predetermined threshold, adjusting focal distance of the first camera and taking, with the first shooting positioning parameter, a third photo in which resolution of a license plate is greater than that in the first photo.

3. The method for obtaining evidences for illegal parking of a vehicle according to claim 1 , wherein, after controlling the second camera to take a second photo with the second shooting positioning parameter, the method further comprises following steps:
if resolution of a license plate in the second photo is lower than a second predetermined threshold, adjusting focal distance of the second camera and taking, with the second shooting positioning parameter, a fourth photo in which resolution of a license plate is greater than that in the second photo.

4. The method for obtaining evidences for illegal parking of a vehicle according to claim 1 , wherein, the step of storing the first photo and the second photo as evidences for illegal parking comprises following a sub-step:
obtaining a license plate number and cab features from the first photo or the second photo based on the image analysis technique;
wherein the evidences for illegal parking comprises: the first photo, the second photo, the license plate number and the cab features.

5. The method for obtaining evidences for illegal parking of a vehicle according to claim 1 , wherein, the correspondence relationship between the shooting positioning parameters of the first camera and the second camera is as follows:

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Assignees

• Hangzhou Hikvision Digital Tec

Inventors

• Che Jun
• Wang Chao
• Cai Weiwei
• Pu Shiliang

Classifications

• H04N7/181

  for receiving images from a plurality of remote sources · CPC title

• G08G1/0175 Primary

  by photographing vehicles, e.g. when violating traffic rules · CPC title

• G08G1/017

  identifying vehicles (G08G1/015, G08G1/054 take precedence) · CPC title

• G06K9/00785

  Physics · mapped topic

• G06V20/625

  License plates · CPC title