ANSI/NIST-ITL 1-2011 - NIST Visual Image Processing Group ...

ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic InformationFigure 2 Order of the Scanned ImageNote that the position or location of the scanning coordinates is not necessarilythe same as the position or location of the minutiae coordinates for friction ridgedata 8 .5 Image resolution requirementsImage resolution requirements are applicable to fingerprint, palmprint, andplantar images. Facial, SMT, and iris images rely on the total number of pixelsscanned and transmitted and are not dependent on the specific scanningresolution used.5.1 Resolution accuracy requirementAll reported nominal resolutions either scanner or transmitting shall have a trueresolution not varying more than 1% from the recorded value. For example arecorded scanning resolution of 500 has a lower true scanning resolution of 495,and a maximum of 505. The same holds true for transmitting resolution.This requirement shall also apply to the scanner and transmitting resolutionrequirements throughout this document.Brad Wing 6/19/10 5:07 PMComment: Note new footnoteBrad Wing 6/19/10 5:07 PMComment: This section has been substantiallyrewritten.•8 The deprecated “standard format’ in Type-9 records of earlier versions of this standard used a coordinatesystem with (0,0) at the lower left corner of the image.10DRAFT 2