Friday, January 28, 2005
Illumination and BRDF estimation & its application in 3D modeling
Many materials in real world has shining reflection surfaces that change their appearance with viewing direction and illumination direction. These materials will confuse most stereo algorithms that expect constant appearance from different viewpoints. We are developing methods to explicitly modeling these reflection effects and integrate them into the multiple view recontruction algorithm.
Our research can be divided into several stages depending the amount of information available during the reconstruction.
1. If the illumination is known, then we can reconstruct both the uniform surface BRDF (material) model as well as the object shape.
Paper:
Tianli Yu, Ning Xu and Narendra Ahuja, "Recovering Shape and Reflectance Model of Non-Lambertian Objects from Multiple Views", CVPR 2004 [Download from IEEE Xplore]
2. If the illumination is also unknown, then we use the View Independent Reflectance Map to reconstruct both the surface shape, and an joint effect of illumination and surface material.
Paper:
Tianli Yu, Ning Xu and Narendra Ahuja, "Shape and View Independent Reflectance Map from Multiple Views", ECCV 2004.
Full text: [Download from Springer]
Tianli Yu, Ning Xu and Narendra Ahuja, "Shape and View Independent Reflectance Map from Multiple Views", International Journal of Computer Vision, vol. 73 , issue 2 , pp. 123 - 138, June 2007. [Download from IJCV]
Our research can be divided into several stages depending the amount of information available during the reconstruction.
1. If the illumination is known, then we can reconstruct both the uniform surface BRDF (material) model as well as the object shape.
Initial shape deform to the correct shape as the iterative algorithm converges.
Paper:
Tianli Yu, Ning Xu and Narendra Ahuja, "Recovering Shape and Reflectance Model of Non-Lambertian Objects from Multiple Views", CVPR 2004 [Download from IEEE Xplore]
2. If the illumination is also unknown, then we use the View Independent Reflectance Map to reconstruct both the surface shape, and an joint effect of illumination and surface material.
Paper:
Tianli Yu, Ning Xu and Narendra Ahuja, "Shape and View Independent Reflectance Map from Multiple Views", ECCV 2004.
Full text: [Download from Springer]
Tianli Yu, Ning Xu and Narendra Ahuja, "Shape and View Independent Reflectance Map from Multiple Views", International Journal of Computer Vision, vol. 73 , issue 2 , pp. 123 - 138, June 2007. [Download from IJCV]
