Hybrid Thermoelectric–Photovoltaic Generators under Negative Illumination Conditions

Two-image Comparison under Different Illumination Conditions

We present a new theory that shows that two images of the same object taken under two different light directions can be made virtually identical by filtering each image by a directional derivative filter. The direction and magnitude of the derivative is generally different for each image, and depends on illumination directions used. The method requires the object surface to be of uniform Lamber...

Eecient Color Segmentation under Varying Illumination Conditions

Video-based human body tracking using color segmentation often causes problems due to movements of the object or changes in the global illumination parameters. In this paper the innuence of varying lighting conditions and large object movements in space is measured and analysed. For color segmentation an eecient technique for histogram-classiication is used. Based on the measurement results we ...

cient Color Segmentation under varying Illumination Conditions

Video-based human body tracking using color segmentation often causes problems due to movements of the object or changes in the global illumination parameters. In this paper the in uence of varying lighting conditions and large object movements in space is measured and analysed. For color segmentation an e cient technique for histogram-classi cation is used. Based on the measurement results we ...

Color Target Localization under Varying Illumination Conditions

In this work we have investigated the use of color descriptors to automatically locate the color target in the scene. Three different local descriptors have been tested. These descriptors are then used to return multiple localization hypotheses and a geometrical and appearance validation are introduced to select the most feasible pose. The experimental results on a public dataset of RAW images ...

Robust Face Recognition under various illumination conditions