A Method for Enforcing Integrability in Shape from Shading Algorithms
IEEE Transactions on Pattern Analysis and Machine Intelligence
Recovering high dynamic range radiance maps from photographs
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
International Journal of Computer Vision
Environment matting and compositing
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
International Journal of Computer Vision
Environment matting extensions: towards higher accuracy and real-time capture
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Linear light source reflectometry
ACM SIGGRAPH 2003 Papers
A Cylindrical Surface Model to Rectify the Bound Document Image
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
What Does Motion Reveal About Transparency?
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
Digital restoration using volumetric scanning
Proceedings of the 4th ACM/IEEE-CS joint conference on Digital libraries
Image Restoration of Arbitrarily Warped Documents
IEEE Transactions on Pattern Analysis and Machine Intelligence
Fields of Experts: A Framework for Learning Image Priors
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
Geometric and Photometric Restoration of Distorted Documents
ICCV '05 Proceedings of the Tenth IEEE International Conference on Computer Vision - Volume 2
Efficient light scattering through thin semi-transparent objects
GRAPHITE '05 Proceedings of the 3rd international conference on Computer graphics and interactive techniques in Australasia and South East Asia
A Unifying and Rigorous Shape from Shading Method Adapted to Realistic Data and Applications
Journal of Mathematical Imaging and Vision
Real-time rendering of plant leaves
ACM SIGGRAPH 2006 Courses
An Improved Physically-Based Method for Geometric Restoration of Distorted Document Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
A new system to acquire and restore document shape and content
PROCAMS '08 Proceedings of the 5th ACM/IEEE International Workshop on Projector camera systems
Digital removal of blotches with variable semi-transparency using visibility laws
BVAI'07 Proceedings of the 2nd international conference on Advances in brain, vision and artificial intelligence
Region filling and object removal by exemplar-based image inpainting
IEEE Transactions on Image Processing
Geometric and shading correction for images of printed materials using boundary
IEEE Transactions on Image Processing
Dirty glass: rendering contamination on transparent surfaces
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
VAST'05 Proceedings of the 6th International conference on Virtual Reality, Archaeology and Intelligent Cultural Heritage
Automatic photometric restoration of historical photographic negatives
Proceedings of the 2nd International Workshop on Historical Document Imaging and Processing
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This work describes the development and analysis of a new image-based photonegative restoration system. Deteriorated acetatebased safety negatives are complex objects due to the separation and channeling of their multiple layers that has often occurred over 70 years time. Using single-scatter diffuse transmission model, the intrinsic intensity information and shape distortion of film can be modeled. A combination of structured-light and high-dynamic range imaging is used to acquire the data which allows for automatic photometric and geometric correction of the negatives. This is done with a simple-to-deploy and cost-effective camera and LCD system that are already available to most libraries and museums. An initial analysis is provided to show the accuracy of this method and promising results of restoration of actual negatives from a special archive collection are then produced.