ISO/TR TECHNICAL 19263-1 REPORT First edition 2017-03 Photography - Archiving systems Part 1: Best practices for digital image capture of cultural heritage material Photographie - Systemes d'archivage - Partie 1: Meilleures pratiques pour la capture d'images numériques du matériel de patrimoine culturel Reference number IS0/TR 19263-1:2017(E) ISO @ IS0 2017 IS0/TR 19263-1:2017(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2017, Published in Switzerland or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or IsO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii @ IS0 2017 - All rights reserved IS0/TR 19263-1:2017(E) Contents Page Foreword ..V Introduction, ..vi Scope. 1 2 Analysis of image quality 1 2.1 General 1 2.2 Image quality characteristics 1 2.3 IS0 19264 Test chart technical features 2 2.4 Grid and gray/white features.. . 2 2.4.1 General. 2 2.4.2 Running scale features (cm and inches). 3 2.4.3 Grayscale and running gray/white/black bar features .3 2.4.4 Colour patch features. 3 2.4.5 MTF measurement features .4 2.4.6 Additional IS0 19264 target features/reference data. 4 2.5 Additional targets. . 4 2.6 Linear grayscale 5 DCSG colour chart 2.6.1 2.6.2 Limitations of Chart Based Imaging System Analysis ..5 3 Image quality levels .6 4 Basic principles of image capture and processing .6 4.1 . 6 Overview 4.2 Scene referred and output referred image states 7 4.3 User controls and readouts. .7 4.3.1 General. 7 4.3.2 Colour Processing Controls .7 4.3.3 Exposure readouts .8 4.3.4 Raw processor readouts and controls. 8 4.3.5 Other user controls. .8 4.3.6 Unwanted data modification .8 4.4 Master images and derivatives. .8 4.4.1 .8 General. 4.4.2 Raw image files .8 4.4.3 Artwork reproduction cycle .9 5 Imaging system setup and calibration .10 5.1 General .10 5.2 Position camera system ..10 5.3 Establish uniformity-even illumination ..10 5.3.1 General ..10 5.3.2 Optional flat-fielding .10 5.4 Establish exposure .11 5.5 Establish tone reproduction curve (OECF) .11 5.6 Create an ICC colour profile. ..11 5.7 ..12 Analyse colour and tone ..12 6 Application of image quality analysis 6.1 Selection of imaging systems: preflighting equipment or vendors 6.2 Using IS0 19264 target: Initial system configuration 6.3 Using IS0 19264 target: System performance evaluation (benchmarking) ..13 6.4 Using ISO 19264 target: Ongoing performance monitoring ..13 Technical metadata for image quality analysis ..14 7 ..15 Annex A (informative) Linear Grayscale L* to RGB conversion table Annex B (informative) Subjective interpretive imaging (aesthetics) .16 iii @ IS0 2017 - All rights reserved