About: http://webisa.webdatacommons.org/315232881

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 addition, also widely used is a method which judges the quality by using an area where the ridgeline direction can be recognized, as disclosed in U.S. Pat. No. 5,963,656 (Patent Literature 3).
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca