Designation:E1499−97(Reapproved2009)StandardGuideforSelection,Evaluation,andTrainingofObservers1ThisstandardisissuedunderthefixeddesignationE1499;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribescriteriaandtestsforselecting,evaluating,andtraininghumanvisual-sensoryobserversfortasksinvolvingtheperceptionandscalingofpropertiesandphenomenarelatingtoappearance.1.2ExamplesoftestsrequiringtheuseoftrainedobserversincludebutarenotlimitedtothosedescribedinthefollowingASTMstandards:oncolor,PracticeD1535andPracticeE1360;oncolordifference,PracticeD1729andTestMethodD2616;ongloss,TestMethodD4449;onmetamerism,Prac-ticeD4086;andonsettingtolerances,PracticeD3134.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1535PracticeforSpecifyingColorbytheMunsellSystemD1729PracticeforVisualAppraisalofColorsandColorDifferencesofDiffusely-IlluminatedOpaqueMaterialsD2616TestMethodforEvaluationofVisualColorDiffer-enceWithaGrayScaleD3134PracticeforEstablishingColorandGlossTolerancesD4086PracticeforVisualEvaluationofMetamerismD4449TestMethodforVisualEvaluationofGlossDiffer-encesBetweenSurfacesofSimilarAppearanceE284TerminologyofAppearanceE1360PracticeforSpecifyingColorbyUsingtheOpticalSocietyofAmericaUniformColorScalesSystem3.Terminology3.1Definitions—DefinitionsofappearancetermsinTermi-nologyE284areapplicabletothisguide.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1appearance,n—inpsychophysicalstudies,perceptioninwhichthespectralandgeometricaspectsofavisualstimulusareintegratedwithitsilluminatingandviewingenvironment.3.2.2observe...
