Face Recognition and Drunk Classification Using Infrared Face Images

Gabriel Hermosilla,Francisco Pizarro,Gonzalo Farias,Esteban Vera,José Luis Verdugo,Margarita Machuca

doi:10.1155/2018/5813514

Abstract

The aim of this study is to propose a system that is capable of recognising the identity of a person, indicating whether the person is drunk using only information extracted from thermal face images. The proposed system is divided into two stages, face recognition and classification. In the face recognition stage, test images are recognised using robust face recognition algorithms: Weber local descriptor (WLD) and local binary pattern (LBP). The classification stage uses Fisher linear discriminant to reduce the dimensionality of the features, and those features are classified using a classifier based on a Gaussian mixture model, creating a classification space for each person, extending the state-of-the-art concept of a “DrunkSpace Classifier.” The system was validated using a new drunk person database, which was specially designed for this work. The main results show that the performance of the face recognition stage was 100% with both algorithms, while the drunk identification saw a performance of 86.96%, which is a very promising result considering 46 individuals for our database in comparison with others that can be found in the literature.

Highlights

Thermoregulation is a process in which a biological organism modifies its internal temperature within certain limits and is commanded by the hypothalamus
The system is composed of two main stages, one for face recognition and the other for drunk classification
The face recognition stage provides the identity of an individual previously stored in a database, while the classification stage identifies the state of the individual, indicating if the subject has consumed alcohol

Summary

Introduction

Thermoregulation is a process in which a biological organism modifies its internal temperature within certain limits and is commanded by the hypothalamus. The temperature reached in a normal state is approximately 36.7° (internal) and 33.5° (skin). In the case that the internal temperature is above 36.7°, thermoregulation generates two processes for heat loss, sweating and vasodilation. Some research studies have shown that the thermoregulatory system can be altered depending on mood or the consumption of certain foods [1]. In a series of publications, it is concluded that alcohol alters the correct operation of the system responsible for thermoregulation [2, 3], generating an induced vasodilation in the skin, which increases heat loss through convection, leading to a decrease in body temperature that is directly related to the amount of alcohol consumed

Objectives

Methods

Conclusion