ISO INTERNATIONAL STANDARD 9241-394 First edition 2020-04 Ergonomics of human-system interaction - Part 394: Ergonomic requirements for reducing undesirable biomedical effects of visually induced motion sickness during watching electronic images Ergonomie de I'interaction homme-systeme- Partie 394: Exigences ergonomiques pour la reduction des effets biomedicaux indesirables des cinetoses induites par stimulusvisuel lors de I'observation d'images electroniques Reference number IS09241-394:2020(E) Tso @IS0 2020 IS09241-394:2020(E) COPYRIGHTPROTECTEDDOCUMENT @IS02020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below orIso's member body in the country of therequester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland i @IS0 2020 - All rights reserved IS09241-394:2020(E) Contents Page Foreword iv Introduction. 1 Scope. 1 2 Normative references 1 3 Terms and definitions .1 4 Guiding concepts .2 4.1 Contexts of image viewing 2 4.2 Basis of guiding concepts 3 4.3 Major factors of VIMS. 3 5 Ergonomic requirements and recommendations. .4 5.1 .4 General 5.2 Imagespresented inpassiveviewingenvironments 5 5.2.1 Potentially unwanted conditions of visual rotation 5 5.2.2 Potentiallyunfavourable conditions of visual rotation 5 5.2.3 Basis of the requirements and recommendations 5 5.2.4 Referenceinformationoneffectsofvisualmotioncombination 6 5.3 Imagespresented in activeviewing environments. 6 5.3.1 General. 6 5.3.2 Potentiallyunfavourableconditionsofvisual rotation .6 5.3.3 Referenceinformationoneffectsofvisualmotioncombinations .7 5.3.4 Potentiallyunfavourableconditions of largevisual field images or VR- type HMDs. 6 Conformance and usages of ergonomic recommendations .7 6.1 General 7 6.2 Measurement methods .8 6.3 Procedure of conformance and report .8 .9 AnnexA (informative)0verviewof theIs09241series AnnexB (informative) Viewing conditions .10 AnnexC (informative)Effectsofvisual motion combination .11 Annex D (informative) General methods of alleviating VIMS .15 AnnexE (informative)Measurementmethodofvisualglobal motion ..17 AnnexF (informative)Measurementmethod of timedelay ofhead tracking .20 Annex G (informative) Sample procedure for assessing applicability and conformance .21 Annex H (informative) Individual viewer factors. .23 Bibliography .24 IS02020-All rightsreserved iii