PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • SIFT ??? the Scale Invariant Feature Transform library, built on OpenCV, is a method to detect distinctive, invariant image feature points, which easily can be matched between images to perform tasks such as object detection and recognition, or to compute geometrical transformations between images.
http://www.w3.org/ns/prov#wasQuotedFrom
  • oreilly.com