About: http://webisa.webdatacommons.org/293603401

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	One aspect of the present invention is a method for determining a halftone frequency of a pixel of image data in a window of pixels.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk