Introduction

Abstract

As computers are becoming increasingly pervasive, there is a growing interest in the development of new approaches and technologies for bridging the human–computer barrier. The aim is to bring human–computer interaction (HCI) to a regime where the interactions with computers become as natural as the interactions between humans. As a part of HCI, incorporating hand gestures into communication methods is an important research area. Hand gesture recognition (HGR) is the natural way of human–machine interaction. Today many researchers in the academia and industry are studying different techniques that make such interactions easier, natural, and convenient without the requirement for any additional devices.