Non-linear approximation of reflectance functions
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Object shape and reflectance modeling from observation
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
IEEE Transactions on Pattern Analysis and Machine Intelligence
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Illumination for computer generated pictures
Communications of the ACM
High-Quality Texture Reconstruction from Multiple Scans
IEEE Transactions on Visualization and Computer Graphics
Image-based reconstruction of spatial appearance and geometric detail
ACM Transactions on Graphics (TOG)
Appying Shape from Lighting Variation to Bump Map Capture
Proceedings of the Eurographics Workshop on Rendering Techniques '97
PG '02 Proceedings of the 10th Pacific Conference on Computer Graphics and Applications
Free-viewpoint video of human actors
ACM SIGGRAPH 2003 Papers
A data-driven reflectance model
ACM SIGGRAPH 2003 Papers
blue-c: a spatially immersive display and 3D video portal for telepresence
ACM SIGGRAPH 2003 Papers
Recovering 3-D shape and reflectance from a small number of photographs
EGRW '03 Proceedings of the 14th Eurographics workshop on Rendering
High-quality video view interpolation using a layered representation
ACM SIGGRAPH 2004 Papers
Combining 3D flow fields with silhouette-based human motion capture for immersive video
Graphical Models - Special issue on pacific graphics 2003
Performance relighting and reflectance transformation with time-multiplexed illumination
ACM SIGGRAPH 2005 Papers
Video-based character animation
Proceedings of the 2005 ACM SIGGRAPH/Eurographics symposium on Computer animation
Shape and Spatially-Varying BRDFs from Photometric Stereo
ICCV '05 Proceedings of the Tenth IEEE International Conference on Computer Vision (ICCV'05) Volume 1 - Volume 01
Importance sampling for video environment maps
SIGGRAPH '05 ACM SIGGRAPH 2005 Sketches
Seeing People in Different Light-Joint Shape, Motion, and Reflectance Capture
IEEE Transactions on Visualization and Computer Graphics
Animatable facial reflectance fields
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Reflectance sharing: image-based rendering from a sparse set of images
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
Relighting human locomotion with flowed reflectance fields
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
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In our previous work [21], we have shown that by means of a model-based approach, relightable free-viewpoint videos of human actors can be reconstructed from only a handful of multi-view video streams recorded under calibrated illumination. To achieve this purpose, we employ a marker-free motion capture approach to measure dynamic human scene geometry. Reflectance samples for each surface point are captured by exploiting the fact that, due to the person's motion, each surface location is, over time, exposed to the acquisition sensors under varying orientations. Although this is the first setup of its kind to measure surface reflectance from footage of arbitrary human performances, our approach may lead to a biased sampling of surface reflectance since each surface point is only seen under a limited number of half-vector directions. We thus propose in this paper a novel algorithm that reduces the bias in BRDF estimates of a single surface point by cleverly taking into account reflectance samples from other surface locations made of similar material. We demonstrate the improvements achieved with this spatio-temporal reflectance sharing approach both visually and quantitatively.