Scale-Space and Edge Detection Using Anisotropic Diffusion
IEEE Transactions on Pattern Analysis and Machine Intelligence
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Matte painting in the digital age
ACM SIGGRAPH 98 Conference abstracts and applications
Sequential quadratic programming for large-scale nonlinear optimization
Journal of Computational and Applied Mathematics - Special issue on numerical analysis 2000 Vol. IV: optimization and nonlinear equations
ECCV '90 Proceedings of the First European Conference on Computer Vision
Detecting and Tracking Multiple Moving Objects Using Temporal Integration
ECCV '92 Proceedings of the Second European Conference on Computer Vision
3D Model Acquisition from Extended Image Sequences
ECCV '96 Proceedings of the 4th European Conference on Computer Vision-Volume II - Volume II
Panoramic mosaics by manifold projection
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
Stereo Matching with Transparency and Matting
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Image-based environment matting
EGRW '02 Proceedings of the 13th Eurographics workshop on Rendering
High-quality video view interpolation using a layered representation
ACM SIGGRAPH 2004 Papers
Natural video matting using camera arrays
ACM SIGGRAPH 2006 Papers
Boundary matting for view synthesis
Computer Vision and Image Understanding
Stereo for Image-Based Rendering using Image Over-Segmentation
International Journal of Computer Vision
Extracting depth and matte using a color-filtered aperture
ACM SIGGRAPH Asia 2008 papers
Multiview segmentation and tracking of dynamic occluding layers
Image and Vision Computing
Artifact reduction using reliability reasoning for image generation of FTV
Journal of Visual Communication and Image Representation
Stereo matching with reflections and translucency
CVPR'03 Proceedings of the 2003 IEEE computer society conference on Computer vision and pattern recognition
Multi-view alpha matte for free viewpoint rendering
MIRAGE'11 Proceedings of the 5th international conference on Computer vision/computer graphics collaboration techniques
Supervised texture detection in images
CAIP'05 Proceedings of the 11th international conference on Computer Analysis of Images and Patterns
Steerable semi-automatic segmentation of textured images
SCIA'05 Proceedings of the 14th Scandinavian conference on Image Analysis
Trimap segmentation for fast and user-friendly alpha matting
VLSM'05 Proceedings of the Third international conference on Variational, Geometric, and Level Set Methods in Computer Vision
Edutainment'06 Proceedings of the First international conference on Technologies for E-Learning and Digital Entertainment
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When estimating foreground and background layers (or equivalently an alpha matte), it is often the case that pixel measurements contain mixed colours which are a combination of foreground and background. Object boundaries, especially at thin sub-pixel structures like hair, pose a serious problem.In this paper we present a multiple view algorithm for computing the alpha matte. Using a Bayesian framework, we model each pixel as a combined sample from the foreground and background and compute a MAP estimate to factor the two. The novelties in this work include the incorporation of three different types of priors for enhancing the results in problematic scenes. The priors used are inequality constraints on colour and alpha values, spatial continuity, and the probability distribution of alpha values.The combination of these priors result in accurate and visually satisfying estimates. We demonstrate the method on real image sequences with varying degrees of geometric and photometric complexity. The output enables virtual objects to be added between the foreground and background layers, and we give examples of this augmentation to the original sequences.