Hossein Ragheb

A Novel Approach for Fast Action Recognition using Simple Features (2008)

Ragheb, Hossein, Velastin, Sergio, Remagnino, Paolo, Ellis, Tim

We propose a new method for human action recognition from video streams that is fast and robust to random noise, partial occlusions and large changes in camera views. We extract features in the...

A Novel Approach for Fast Action Recognition using Simple Features (2008)

Ragheb, Hossein, Velastin, Sergio, Remagnino, Paolo, Ellis, Tim

We propose a new method for human action recognition from video streams that is fast and robust to random noise, partial occlusions and large changes in camera views. We extract features in the...

Independent Viewpoint Silhouette-based Human Action Modelling and Recognition (2008)

Orrite, Carlos, Martínez, Francisco, Herrero, Elías, Ragheb, Hossein, Velastin, Sergio

This paper addresses the problem of silhouette-based human action modelling and recognition independently of the camera point of view. Action recognition is carried out by comparing a 2D motion...

Independent Viewpoint Silhouette-based Human Action Modelling and Recognition (2008)

Orrite, Carlos, Martínez, Francisco, Herrero, Elías, Ragheb, Hossein, Velastin, Sergio

This paper addresses the problem of silhouette-based human action modelling and recognition independently of the camera point of view. Action recognition is carried out by comparing a 2D motion...

Diuse Re ectance Models for Rough Surfaces: A Geometrical Study for Shape-from-Shading (2007)

Hossein Ragheb, Edwin R. Hancock

This paper describes how surface shape can be recovered from rough surfaces using the Oren and Nayar model. The idea underpinning the method is to use the Oren and Nayar model to perform Lambertian...

Surface Radiance Correction for Shape from Shading (2005)

Hossein Ragheb, Edwin R. Hancock

It is well known that many surfaces exhibit reflectance that is not well modelled by Lambert’s law. This is the case not only for surfaces that are rough or shiny, but also those that are matte and...

Abstract Darboux smoothing for shape-from-shading (2002)

Hossein Ragheb, Edwin R. Hancock

This paper describes a new surface normal smoothing process which can be used in conjunction with shape-fromshading. Rather than directly smoothing the surface normal vectors, we exert control over...

Separating Lambertian and Specular Reflectance Components using Iterated Conditional Modes (2001)

Hossein Ragheb, Edwin. R. Hancock

In this paper we address the problem of separating Lambertian and specular reflection components in order to improve the quality of surface normal information recoverable using shape-from-shading....