ISO/IEC INTERNATIONAL STANDARD 39794-5 Firstedition 2019-12 Information technology - Extensible biometricdatainterchangeformats- Part 5: Face image data Reference number IEC IS0/IEC39794-5:2019(E) ISO IS0/IEC2019 IS0/IEC39794-5:2019(E) COPYRIGHTPROTECTEDDOCUMENT ISO/IEC2019 All rights reserved.Unless otherwise specified,orrequired in thecontext ofits implementation,no partofthispublication may bereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orposting on the internetor an intranet, without prior written permission.Permission can be requested from eitherIsO at the address beloworIso'smemberbodyinthecountryoftherequester. ISocopyrightoffice CP401:Ch.de Blandonnet8 CH-1214Vernier,Geneva Phone:+41227490111 Fax: +41 22749 0947 Email:[email protected] Website:www.iso.org Published in Switzerland ii IS0/IEC2019-Allrightsreserved IS0/IEC39794-5:2019(E) Contents Page Foreword ..vi Introduction. 1 Scope.. .1 2 Normativereferences .1 3 Terms and definitions .2 4 Abbreviatedterms .7 5 Conformance. .8 6 Modalityspecificinformation .9 7 Abstractdataelements .9 7.1 Overview. .9 7.1.1 Contentand notation .9 7.1.2 Structure overview 10 7.1.3 Dataconventions 11 7.2 Faceimagedatablock .11 7.3 Versionblock .11 7.4 Representation block 12 7.5 Representation identifier .12 7.6 Capturedate/timeblock. 12 7.7 Qualityblocks .12 7.8 PADdatablock .12 7.9 Session identifier. .12 7.10 Derived from. .13 7.11 Capturedeviceblock 13 7.12 Model identifierblock .13 7.13 Certificationidentifierblocks .13 7.14 Identitymetadatablock .13 7.15 Gender 14 7.16 Eye colour .14 7.17 Haircolour .15 7.18 Subjectheight ..15 7.19 Properties block 16 7.20 Expressionblock 16 7.21 Poseangleblock. .17 7.22 Angle data block. 18 7.23 Anglevalue .18 7.24 Angle uncertainty .18 7.25 Landmarkblock .19 7.26 Landmark kind. .19 7.27 MPEG4featurepoint .19 7.28 Anthropometriclandmark .22 7.29 Landmarkcoordinatesblock 25 7.30 Image representation block. .26 7.31 2Dimagerepresentationblock 26 7.32 2D representation data .26 7.33 2Dcapturedeviceblock 26 7.34 2Dcapturedevicespectralblock .26 7.35 2D capture device technology identifier 27 7.36 2Dimageinformationblock 27 7.37 2D face image kind. .27 7.38 Post acquisition processingblock .28 7.39 Lossytransformationattempts. .28 7.40 Imagedataformat 29 IS0/IEC 2019-All rights reserved ii IS0/IEC39794-5:2019(E) 7.41 Camera to subjectdistance .31 7.42 Sensor diagonal. 31 7.43 Lensfocal length 32 7.44 Imagesizeblock 32 7.45 Width. .32 7.46 Height. 32 7.47 Imagefacemeasurementsblock .32 7.48 Imagehead width 33 7.49 Image inter-eyedistance .33 7.50 Imageeye-to-mouthdistance. 34 7.51 Imagehead length .34 7.52 Imagecolourspace. 35 7.53 Referencecolourmappingblock .35 7.54 Referencecolourschema. .35 7.55 Referencecolourdefinitionandvalueblock 35 7.56 3Dshaperepresentationblock .35 7.57 3Drepresentationdata .36 7.58 3Dcapturedeviceblock .36 7.59 3Dmodus 36 7.60 3Dcapturedevicetechnologyidentifier .36 7.61 3D imageinformationblock. 37 7.62 3Drepresentationkindblock .37 7.63 3Dvertexblock. .37 7.64 3Dvertex informationblock .37 7.65 3Dvertexcoordinateblock .37 7.66 3D vertex identifier. .38 7.67 3D vertex normals block. .38 7.68 3Dvertextexturesblock .38 7.69 3D errormap.. .38 7.70 3D vertex triangle data block 39 7.71 3D coordinate system.. .39 7.72 3DCartesiancoordinatesystem .39 7.73 3DCartesianscalesandoffsetsblock .40 7.74 3Dfaceimagekind. .41 7.75 3Dphysicalfacemeasurementsblock .41 7.76 3Dphysicalheadwidth .41 7.77 3Dphysicalinter-eyedistance .42 7.78 3Dphysicaleye-to-mouthdistance .42 7.79 3Dphysicalheadlength .42 7.80 3Dtextured imageresolutionblock .42 7.81 3DMMshape[X/Y/Z] resolution .42 7.82 3DMMtextureresolution .42 7.83 3Dtextureacquisitionperiod .42 7.84 3Dfaceareascannedblock .43 7.85 3Dtexturemapblock .43 7.86 3Dtexturecapturedevicespectralblock .43 7.87 3Dtexturestandard illuminant .44 7.88 3Dtexturemapdata .44 8 Encoding .44 8.1 Overview .44 8.2 Tagged binary encoding .45 8.3 XMLencoding ..