112 search results - page 7 / 23 » Radiometric Calibration from a Single Image |
ICCV
2009
IEEE
15 years 2 months ago
2009
IEEE
In this paper we aim at reconstructing 3D scenes from images
with unknown focal lengths downloaded from photosharing
websites such as Flickr. First we provide a minimal
solution...
3DPVT
2006
IEEE
14 years 3 months ago
2006
IEEE
This paper demonstrates that, for axial non-central optical systems, the equation of a 3D line can be estimated using only four points extracted from a single image of the line. T...
ICRA
2003
IEEE
14 years 2 months ago
2003
IEEE
In this paper, we provide a principled and unified explanation how knowledge in global 3-D structural invariants, typically captured by a group action on a symmetric structure, ca...
CVPR
2004
IEEE
14 years 11 months ago
2004
IEEE
Recovering the 3D coordinates of various joints of the human body from an image is a critical first step for several model-based human tracking and optical motion capture systems....
ECCV
2008
Springer
14 years 11 months ago
2008
Springer
This paper introduces a novel method for recovering both the light directions and camera poses from a single sphere. Traditional methods for estimating light directions using spher...