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CVPR
2008
IEEE
8 years 10 months ago
Beyond the Lambertian assumption: A generative model for Apparent BRDF fields of faces using anti-symmetric tensor splines
Human faces are neither exactly Lambertian nor entirely convex and hence most models in literature which make the Lambertian assumption, fall short when dealing with specularities...
Angelos Barmpoutis, Ritwik Kumar, Baba C. Vemuri, ...
CVPR
2008
IEEE
8 years 11 months ago
Recursive photometric stereo when multiple shadows and highlights are present
We present a recursive algorithm for 3D surface reconstruction based on Photometric Stereo in the presence of highlights, and self and cast shadows. We assume that the surface re...
Vasileios Argyriou, Maria Petrou
CVPR
2008
IEEE
9 years 5 days ago
Demosaicking recognition with applications in digital photo authentication based on a quadratic pixel correlation model
Most digital still color cameras use a single electronic sensor (CCD or CMOS) overlaid with a color filter array. At each pixel location only one color sample is taken, and the ot...
Yizhen Huang, Yangjing Long
CVPR
2008
IEEE
9 years 5 days ago
Single-image vignetting correction using radial gradient symmetry
In this paper, we present a novel single-image vignetting method based on the symmetric distribution of the radial gradient (RG). The radial gradient is the image gradient along t...
Yuanjie Zheng, Jingyi Yu, Sing Bing Kang, Stephen ...
CVPR
2008
IEEE
9 years 5 days ago
Building reconstruction from a single DEM
We present a new approach for building reconstruction from a single Digital Elevation Model (DEM). It treats buildings as an assemblage of simple urban structures extracted from a...
Florent Lafarge, Xavier Descombes, Josiane Zerubia...
CVPR
2008
IEEE
9 years 5 days ago
Off-axis aperture camera: 3D shape reconstruction and image restoration
In this paper we present a novel 3D surface and image reconstruction method based on the off-axis aperture camera. The key idea is to change the size or the 3-D location of the ap...
Qingxu Dou, Paolo Favaro
CVPR
2008
IEEE
9 years 5 days ago
Adaptive region intensity based rigid ultrasound and CT image registration
Rigid registration of intraoperative ultrasound (US) and CT is an important technique to provide real-time guidance for preoperative images and models. Due to the speckle noise an...
Zhijun Zhang
CVPR
2008
IEEE
9 years 5 days ago
Building segmentation for densely built urban regions using aerial LIDAR data
Bodgan C. Matei, Harpreet S. Sawhney, Supun Samara...
CVPR
2008
IEEE
9 years 5 days ago
Loose shape model for discriminative learning of object categories
We consider the problem of visual categorization with minimal supervision during training. We propose a partbased model that loosely captures structural information. We represent ...
Margarita Osadchy, Elran Morash
CVPR
2008
IEEE
9 years 5 days ago
Classification via semi-Riemannian spaces
In this paper, we develop a geometric framework for linear or nonlinear discriminant subspace learning and classification. In our framework, the structures of classes are conceptu...
Deli Zhao, Zhouchen Lin, Xiaoou Tang
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