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Filmrestoratin using extended ACE Jon Anders Øvern
Introduction Restoration of old film
Introduction Restoration of old film using ACE (Automatic Equilization Algorithm)
Introduction Restoration of old film using ACE (Automatic Equilization Algorithm) Form and implement extension
Introduction Restoration of old film using ACE (Automatic Equilization Algorithm) Form and implement extension Experiment and quality analysis
Film restoration Old, faded films Cannot be restored chemically Highly automated digital restoration algortithm wanted
Human Visual System Aquisition and interpretation of light Eye / vortex
Human Visual System Adaption mechanics WP GW
Color correction algorithms Algortihms mimic some properties of the HVS to improve images Global Retinex, global/local WP algorithm
ACE General properties
ACE Difference / non-linear function
ACE Weighting function
ACE Display mapping
ACE My contribution: Inter-frame considersation Non-linear mapping function to avoid edges in the image
ACE in film restoration Flickering Interframe consideration to reduce flickering
Experiment Setup / material
Experiment Results : La Rochelle
Experiment Results : Fire and Police
Experiment Results : Syntheic
Experiment Results : Non-linear mapping
Conclusion ACE extension works
Thanks to : Ivar Farup Jon Yngve Hardeberg Alessandro Rizzi Carlo Gatta
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