c. - Digital Classicist

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Developing A Reflectance Transformation Imaging System for Inscription Documentation. Digital Classicist 03-06-2011, ICS Shadow Stereo 1. pick an azimuthal light direction, then take images at different elevations 2. for each: 1. remove wood grain 2. find shadows adjacent to highlights 3. use these to detect candidate strokes 3. detect those candidate strokes that move as they “should” do 4. the hard bit is to make these steps precise!
Developing A Reflectance Transformation Imaging System for Inscription Documentation. Digital Classicist 03-06-2011, ICS Shadow Stereo The movement of shadows gives a compelling sense of depth, and facilitates the differentiation between incisions and surface markings
Page 1 and 2: Developing a Reflectance Transforma
Page 3 and 4: Methods and problems of artefact do
Page 5: Shadow Stereo: Vindolanda stilus ta
Page 9 and 10: Key: yellow: highlight Developing A
Page 11 and 12: Shadow Stereo: Vindolanda stilus ta
Page 13 and 14: Developing A Reflectance Transforma
Page 15 and 16: Reflectance Transformation Imaging
Page 17 and 18: RTI setups 1. Lighting dome RTI �
Page 19 and 20: Dome RTI system specifications �
Page 21 and 22: RTI in tandem with flatbed scanning
Page 23 and 24: H-RTI in museum and field contexts
Page 25 and 26: H-RTI versatility H-RTI setup in Ä
Page 27 and 28: H-RTI capture and processing Develo
Page 29 and 30: RTIViewer � Developed by Gianpaol
Page 31 and 32: Default Diffuse Gain Specular enhan
Page 33 and 34: 1. Relief-carved proto-writing/art
Page 35 and 36: Normal rendering settings can help
Page 37 and 38: Classical case studies � Reading
Page 39 and 40: 1. Lead curse tablet from Uley �
Page 41 and 42: 2. Vindolanda stilus Tablet � Dom
Page 43 and 44: Summing up � Methods and problems
Page 45: Acknowledgements � AHRC DEDFI;

c. - Digital Classicist

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