Periocular Biometrics and Its Applications: A Review

The periocular region is the area under the proximity of the eyes. The periocular region provides a significant number of features that can be used in situations of the occluded face. Due to face occlusion, a very large portion of the face does not contribute to the features, which may lead to unsatisfactory performance of the system. Focusing only on the periocular region will enhance the performance of the system as only these features will be considered for the development of the application. This paper provides an extensive survey of the different applications that use the periocular region for biometrics and soft biometrics. The paper provides an overview of the different preprocessing steps the researchers are using over recent years. Along with this, the paper also presents possible research opportunities in the domain.