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CVPR
2004
IEEE
16 years 1 months ago
Recovering Shape and Reflectance Model of Non-Lambertian Objects from Multiple Views
This paper proposes an algorithm to simultaneously estimate both the 3D shape and parameters of a surface reflectance model from multiple views of an object made of a single mater...
Tianli Yu, Ning Xu, Narendra Ahuja
CVPR
2004
IEEE
16 years 1 months ago
Restoration of Curved Document Images through 3D Shape Modeling
In this paper, we address the problem of discovering the 3D shape of a book surface from the shading information in a scanned document image. This shapefrom-shading problem is cha...
Zheng Zhang 0003, Chew Lim Tan, Liying Fan
CVPR
2005
IEEE
16 years 1 months ago
Interactive Shape from Shading
Shape from shading (SfS) has always been difficult for real applications due to its intrinsic ill-posedness. In this paper, we propose an interactive SfS method which efficiently ...
Gang Zeng, Yasuyuki Matsushita, Long Quan, Heung-Y...
CVPR
2005
IEEE
16 years 1 months ago
3D Geometric and Optical Modeling of Warped Document Images from Scanners
When one scans a document page from a thick bound volume, the curvature of the page to be scanned results in two kinds of distortion in the scanned document images: i) shade along...
Li Zhang, Zheng Zhang 0003, Chew Lim Tan, Tao Xia
CVPR
2006
IEEE
16 years 1 months ago
Homography from Coplanar Ellipses with Application to Forensic Blood Splatter Reconstruction
Reconstruction of the point source of blood splatter in a crime scene is an important and difficult problem in forensic science. We study the problem of automatically reconstructi...
John Wright, Andrew Wagner, Shankar Rao, Yi Ma