About: http://webisa.webdatacommons.org/40941115

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In order to enhance the contrast and determine whether it is a background or foreground feature, an offset is added to the center pixel thereby increasing the brightness" of the pixel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca