Spectral Sharpening of Color Sensors: Diagonal Color Constancy and Beyond

Javier Vazquez-Corral, Marcelo Bertalmío
2014 Sensors  
It has now been 20 years since the seminal work by Finlayson et al. on the use of spectral sharpening of sensors to achieve diagonal color constancy. Spectral sharpening is still used today by numerous researchers for different goals unrelated to the original goal of diagonal color constancy e.g., multispectral processing, shadow removal, location of unique hues. This paper reviews the idea of spectral sharpening through the lens of what is known today in color constancy, describes the
more » ... methods used for obtaining a set of sharpening sensors and presents an overview of the many different uses that have been found for spectral sharpening over the years.
doi:10.3390/s140303965 pmid:24577523 pmcid:PMC4003926 fatcat:zzphrex2zrbaplztv4zzop326m