DIFF Subgroup Additional Only
H04N 2201/0006 details of the reference pattern (DM 1105)
Full Title
Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof > Diagnosis, testing or measuring; Detecting, analysis or monitoring not otherwise provided for > Method used > using a reference pattern designed for the purpose, e.g. a test chart > details of the reference pattern (DM 1105)