11

Processing the resultsProcessing the results

…What we did

70 Sample Points - Ljubljana

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

22

Processing the resultsProcessing the results

…What we did

33

Comparison by expertComparison by expert

…What we did

44

Color categoriesColor categories

…What we did

70 Sample Points - Ljubljana

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

55

Color categoriesColor categories

…What we did

70 Sample Points - Ljubljana

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

66

Categories Defined by Color Expert

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

Color categoriesColor categories

…What we did

Brick Red

77

Categories Defined by Color Expert

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

Color categoriesColor categories

…What we did

Deep brownish carmine

Brick Red

88

Categories Defined by Color Expert

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

Color categoriesColor categories

…What we did

Deep brownish carmine

RedBrick Red

99

Categories Defined by Color Expert

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

Color categoriesColor categories

…What we did

Deep brownish carmine

Red

Carmine

Brick Red

1010

Categories are “Fuzzy”Categories are “Fuzzy”

…What we did

"Fuzzy" Color Categories

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

1111

Categories are “Fuzzy”Categories are “Fuzzy”

…What we did

Blow-up of Fuzzy Envelopes for Shades 2 and 3

0.490

0.492

0.494

0.496

0.498

0.500

0.502

0.504

0.506

0.508

0.510

0.320 0.325 0.330 0.335 0.340 0.345 0.350 0.355 0.360 0.365 0.370

u' (1976 CIE)

v' (

1976

CIE

)

1.00

0.84

0.40

0.17

0.14

Fuzzy WeightingFunction

1212

Theoretical Theoretical developmentdevelopment

…What we did

Formulated a method for defining Formulated a method for defining color categoriescolor categories

Created a model for understanding Created a model for understanding how individual perception can how individual perception can affect philatelic color identificationaffect philatelic color identification

Correlated this model to “real” test Correlated this model to “real” test datadata

Formed a building block for future Formed a building block for future philatelic color researchphilatelic color research

1313

Using a scannerUsing a scanner

…What we did

Spectroscope forTristimulus Values

(X,Y,Z)

CalibrateYour Scanner

(R,G,B)

Unknown Sample(Ru,Gu,Bu)

3D InterpolationFunction

Maps to:(Xu,Yu,Zu)

u’,v’Categories Defined by Color Expert

0.480

0.485

0.490

0.495

0.500

0.505

0.510

0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390

u' (1976 CIE)

v' (

1976

CIE

)

1414

What we learnedWhat we learned

How to apply the VSC 6000 for How to apply the VSC 6000 for colorimetrycolorimetry

Philatelic color is NOT a matching Philatelic color is NOT a matching problem, it is about categorizationproblem, it is about categorization

Colorimetry is faster and cheaper than Colorimetry is faster and cheaper than x-ray spectroscopy methodsx-ray spectroscopy methods

Scanners can be used to identify colors Scanners can be used to identify colors IF preliminary analysis has been IF preliminary analysis has been performedperformed

1515

What’s next?What’s next?

Completing the scanner Completing the scanner mappingmapping

Documenting and publishing Documenting and publishing all resultsall results

Extending the methodology to Extending the methodology to new projectsnew projects

1616

Two papers:Two papers:– Philatelic Shade Discrimination BasedPhilatelic Shade Discrimination Based

on Measured Color (Herendeen, Allen on Measured Color (Herendeen, Allen and Lera)and Lera)

Color Research and Applications Color Research and Applications and/orand/or London PhilatelistLondon Philatelist

– Using a Scanner to Determine Stamp Using a Scanner to Determine Stamp Shades (Herendeen, Allen and Lera)Shades (Herendeen, Allen and Lera)

London Philatelist London Philatelist oror Collectors Club Collectors Club PhilatelistPhilatelist

Documenting the workDocumenting the work

…What’s next?

1717

NPM SupportNPM Support

Value of NPM scholarship Value of NPM scholarship programprogram

Leveraging human resourcesLeveraging human resources Incubator for IAPIncubator for IAP

1818

AcknowledgementsAcknowledgements

Mr. Allen KaneMr. Allen Kane– For his vision of extending the services of For his vision of extending the services of

the NPM to the philatelic worldthe NPM to the philatelic world Mr. Thomas Lera, Winton Blount Chair Mr. Thomas Lera, Winton Blount Chair

of Research, NPMof Research, NPM– For his continual support and assistance For his continual support and assistance

with all aspects of this effortwith all aspects of this effort Mr. James Allen, Senior Fellow, IAPMr. James Allen, Senior Fellow, IAP

– For his long hours sorting and categorizing For his long hours sorting and categorizing Slovenian postage duesSlovenian postage dues

The EndThe End