Bright Sunshine, Dark Shadows

Estimating Shadows with the Bright Channel Cue

In this paper, we introduce a simple but efficient cue for the extraction of shadows from a single color image, the bright channel cue. We discuss its limitations and offer two methods to refine the bright channel: by computing confidence values for the cast shadows, based on a shadow-dependent feature, such as hue; and by combining the bright channel with illumination invariant representations...

Bright and Dark Solitons

Departamento de Teoría de la Señal y Comunicaciones e Ingeniería Telemática Universidad de Valladolid, ETSI Telecomunicación, Campus Miguel Delibes s/n 47011 Valladolid, Spain Phone: +34 983 185545, Fax: +34 983 423667, e-mail: [email protected] Joule Physics Laboratory, School of Sciences, Institute of Materials Research University of Salford, Salford M5 4WT, UK Phone: +44 161 295 5079, Fax: +...

Bright Light from Dark Matter

How Dark Is Dark? Bright Lights, Big City, Racial Profiling

Grogger and Ridgeway (2006) develop a feasible test for racial profiling "behind a veil of darkness" that exploits the exogenous variability in the visibility of driver race caused by the daylight savings time shift. The idea is that police are less able to use race as a criteria in traffic stops when it is dark, so differences in stop rates for African-Americans between dark and light (while c...

Coupling between dark and bright solitons

We discuss the mutual coupling of solitary waves of two di$erent types, dark and bright, due to nonlinear interaction between the modes with different signs of group-velocity dispersions, and find a novel class of vector solitons. We investigate the stability of these dark-bright solitons and reveal an important mechanism of soliton stabilization. PALS: 03.40.Kf; 42.50.Rh