title: Digital color imaging colposcopy: a matter of choice.
abstract: OBJECTIVE
  To describe the technical performance of a digital color imaging colposcopy (DCIC) system.
  
  
  METHODS
  A videocamera has been selected on the basis of physical size and technical performance. Four digitizer boards with different analogue input signals and different digitizing properties, have been tested with a video test image. The technical performance of a DCIC-system has been analyzed.
  
  
  RESULTS
  A 3-CCD color videocamera gives the best analogue registration. Signal transfer by RGB-videosignal gives superior color and spatial resolution when compared to Y/C in composite videotransfer. Digitalization of the analogue videoimage with less than 24-bit resolution digitizer boards resulted in unwanted side effects that were related to the color measurement accuracy.
  
  
  CONCLUSIONS
  Digital imaging colposcopy requires a 3-CCD videocamera of which the videosignal is transferred as an RGB-signal to a digitizerboard with 24-bit resolution that provides 16 million different colors. To store the image a large medium that is easily accessible is needed.
authors.affiliation: Department of Obstetrics and Gynecology, Free University Hospital, Amsterdam, The Netherlands.
authors.forename: E H
authors.initials: EH
authors.lastname: Hopman
authors.forename: L
authors.initials: L
authors.lastname: Rozendaal
authors.forename: R H
authors.initials: RH
authors.lastname: Verheijen
authors.forename: P
authors.initials: P
authors.lastname: Kenemans
authors.forename: T J
authors.initials: TJ
authors.lastname: Helmerhorst
mesh_terms: D003127:Colposcopy / Q000379:methods*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D012680:Sensitivity and Specificity; D014741:Video Recording