56 search results - page 4 / 12 » Illuminant estimation and detection using near-infrared |
PG
2002
IEEE
14 years 12 days ago
2002
IEEE
We present a new method for the detection and estimation of multiple directional illuminants, using a single image of any object with known geometry and Lambertian reflectance. W...
TIFS
2010
13 years 2 months ago
2010
Abstract--Region duplication is a simple and effective operation to create digital image forgeries, where a continuous portion of pixels in an image, after possible geometrical and...
ACCV
2007
Springer
14 years 1 months ago
2007
Springer
We present a simple and practical approach for segmenting un-occluded items in a scene by actively casting shadows. By ’items’, we refer to objects (or part of objects) enclose...
PG
2007
IEEE
14 years 1 months ago
2007
IEEE
Standard density estimation approaches suffer from visible bias due to low-pass filtering of the lighting function. Therefore, most photon density estimation methods have been us...
MVA
2006
13 years 7 months ago
2006
In this paper, we will present a technique for measuring visibility distances under foggy weather conditions using a camera mounted onboard a moving vehicle. Our research has focus...