Patent ID: 11869255
Assignee: HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The method according to claim 1, wherein the first image feature is a multi-dimensional feature vector, and the first deep learning model is a first classifier, wherein determining the first image feature of the infrared face region and analyzing the first image feature through the pre-trained first deep learning model to obtain the infrared analysis result comprises:
determining a light intensity distribution of the infrared face region and a unit normal vector of each point in the infrared face region;
calculating a reflectivity distribution of the infrared face region based on the light intensity distribution and the unit normal vector of each point;
dividing the infrared face region into a plurality of organ regions, and determining reflectivity distribution histograms of the plurality of organ regions based on the reflectivity distribution;
converting the reflectivity distribution histograms into a multi-dimensional feature vector; and
analyzing the multi-dimensional feature vector through the pre-trained first classifier to obtain the infrared analysis result.