About: http://webisa.webdatacommons.org/192251267

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	No. 10/319,404, which describes a variety of methods for reversible watermarking of data, including a technique specifically referred to as difference expansion.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com