A method for identifying a video character

Abstract

The invention relates to a method for identifying a video character, comprising the following steps: S1, loading an inspection video and a sample picture, wherein the inspection video contains a character to be identified, and the sample picture is a head picture of a suspect; S2, calculating the face feature vector a of the head image in the sample picture; 3, obtaining each frame picture of thatperson to be identified contained in the verification video, and calculating a face feature vector b of the person to be identified in each frame picture; S4, calculating similarity according to theface feature vector b of the person to be identified in each frame and the face feature vector a of the sample portrait, obtaining a similarity value, and recording the maximum similarity value; S5: Judging whether the person in the video is a suspect or not according to the maximum similarity value. Compared with the prior art, the video character identification method of the invention can realize the identification of the characters in the video quickly and accurately, and provides convenience for the forensic identification of the video.

Description

technical field [0001] The invention belongs to the application field of information technology, and in particular relates to a method for identifying people in a video. Background technique [0002] As the public security department intensifies the monitoring of the social environment, surveillance cameras can be seen everywhere in our lives, which provides a guarantee for our safety. The video information captured by the cameras is often strong evidence of criminal suspects committing crimes. In the handling of judicial cases, it is often necessary to identify and judge the specialized issues involved in the lawsuit and provide appraisal opinions. Among them, it is often necessary to identify the identity of the characters in the audio-visual materials and the criminal suspects, which cannot be directly observed by naked eyes. Identification must be carried out with the help of computers and related algorithms. That is to say, in the judicial identification process, it is ...

AI Technical Summary

Problems solved by technology

[0003] Generally, in the forensic identification process, the criminal suspect has been controlled, and a clear portrait photo of the criminal suspect can be obtained, and a video containing the criminal suspect can be obtained, but the criminal suspect in the video must be identified as the person on the photo. At present, the inspection materials for portrait identification in judicial appraisal are generally clear portrait pictures, and there is no portrait identification method for videos, especially videos with poor imaging effects.

Images