Driver phone call making/answering state identification method and device

Abstract

The invention provides a driver phone call making / answering state identification method and device. The method comprises steps that a window of a target vehicle in a monitoring image is positioned; acandidate driver detection area is acquired according to the window positioning information and the license plate information of the target vehicle; the candidate driver detection area is detected through employing a direction gradient histogram and a support vector machine to acquire a head shoulder area of a driver; the head shoulder area is sequentially inputted to a first CNN network and a second CNN network, preliminary screening of the head shoulder area is carried out through the first CNN network to acquire a suspected phone call making / answering head shoulder area of the driver, the output result of the first CNN network is further screened by the second CNN network to acquire a phone call making / answering state of the driver. The method is advantaged in that false detection of non-real phone call making / answering under complex occasions can be eliminated, identification precision is improved, and scene adaptability and robustness are good.

Description

technical field [0001] The present application relates to the field of video surveillance, in particular to a state recognition method and device for a driver to make and receive calls while driving. Background technique [0002] If the driver answers the phone while driving, it will greatly increase the incidence of traffic accidents. Therefore, it is necessary to effectively identify the state of the driver's truck answering the phone, as an important evidence of whether it violates the rules. [0003] With the continuous development of image processing technology, computer vision technology, deep learning technology and embedded technology, how to automatically identify and obtain evidence for violations of vehicles (including people in the vehicle) has become a research hotspot in current intelligent transportation. [0004] The prior art provides a method for identifying driver's mobile phone behavior (CN105868690A). Firstly, the video stream in the cockpit is collected...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present application provides a state recognition method and device for the driver to make and receive calls while driving, so as to solve the problem of low accuracy in state recognition of the driver for making and receiving calls while driving in the prior art

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