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Exposing photo manipulation from shading and shadows
- Source :
- ACM Transactions on Graphics; vol 33, iss 5, 1-21; 0730-0301
- Publication Year :
- 2014
-
Abstract
- We describe a method for detecting physical inconsistencies in lighting from the shading and shadows in an image. This method imposes a multitude of shading- and shadow-based constraints on the projected location of a distant point light source. The consistency of a collection of such constraints is posed as a linear programming problem. A feasible solution indicates that the combination of shading and shadows is physically consistent, while a failure to find a solution provides evidence of photo tampering.
Details
- Database :
- OAIster
- Journal :
- ACM Transactions on Graphics; vol 33, iss 5, 1-21; 0730-0301
- Notes :
- application/pdf, ACM Transactions on Graphics vol 33, iss 5, 1-21 0730-0301
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1325587397
- Document Type :
- Electronic Resource