Functional Asplund metrics for pattern matching, robust to variable lighting conditions

Fast, Robust Techniques for Colored Object Detection in Variable Lighting Conditions

In this paper, we present two new algorithms, Histogram Threshold Vector Projection (HTVP) and Histogram Threshold Ellipsoid Distance (HTED), for fast color-based detection of objects under variable illumination. We have developed these algorithms for the purposes of robot perception in an adversarial multi-robot task, where the competing needs of fast processing and robustness must be balanced...

Lighting-variable AdaBoost Based-on System for Robust Face Detection

In order to detect faces in pictures presenting difficult real-world conditions such as dark background or backlighting, we propose a new method which is robust to varying illuminations and which automatically adapts itself to these lighting changes. The proposed face detection technique is based on an efficient AdaBoost super-classifier and relies on multiple features, namely, the global inten...

Robust real-time eye detection and tracking under variable lighting conditions and various face orientations

Most eye trackers based on active IR illumination require distinctive bright pupil effect to work well. However, due to a variety of factors such as eye closure, eye occlusion, and external illumination interference, pupils are not bright enough for these methods to work well. This tends to significantly limit their scope of application. In this paper, we present an integrated eye tracker to ov...

Illumination Normalization for Robust Face Recognition Against Varying Lighting Conditions

Evaluations of the state-of-the-art of both academic face recognition algorithms and commercial systems have shown that recognition performance of most current technologies degrades due to the variations of illumination. This paper investigates several illumination normalization methods and proposes some novel solutions. The main contribution of this paper includes: (1) A Gamma Intensity Correc...

Luminance Metrics for Roadway Lighting