Portrait recognition method based on trajectory tracking

The invention provides a portrait recognition method based on trajectory tracking, and the method is characterized in that the method comprises the steps: firstly, obtaining the personal identity information of an examined person through an identity recognition device; the mobile phone track collection module is used for generating first track information of the investigated person; then, a geographic information system calling module generates a first motion trail diagram of the mobile phone on a digital map; based on the first motion trail diagram, positioning a camera device on the motion trail diagram; finally, an image recognition system, according to the personal identity information and the camera device, the investigated person is recognized from the image, so that the problem thatthe close contact person cannot be accurately investigated due to the fact that the specific motion trail of the investigated person cannot be reproduced is solved, the efficiency of accurately investigating the close contac