블로그 이미지
Leeway is... the freedom that someone has to take the action they want to or to change their plans.
maetel

Notice

Recent Post

Recent Comment

Recent Trackback

Archive

calendar

1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
  • total
  • today
  • yesterday

Category

2010. 2. 9. 21:22 Computer Vision

Foundations and Trends® in
Computer Graphics and Vision

Volume 4 Issue 4

3D Reconstruction from Multiple Images: Part 1 Principles

Theo Moons
KU Brussel

Luc Van Gool
KU Leuven and ETH Zurich

Maarten Vergauwen
GeoAutomation

Abstract

The issue discusses methods to extract 3-dimensional (3D) models from plain images. In particular, the 3D information is obtained from images for which the camera parameters are unknown. The principles underlying such uncalibrated structure-from-motion methods are outlined. First, a short review of 3D acquisition technologies puts such methods in a wider context, and highlights their important advantages. Then, the actual theory behind this line of research is given. The authors have tried to keep the text maximally self-contained, therefore also avoiding to rely on an extensive knowledge of the projective concepts that usually appear in texts about self-calibration 3D methods. Rather, mathematical explanations that are more amenable to intuition are given. The explanation of the theory includes the stratification of reconstructions obtained from image pairs as well as metric reconstruction on the basis of more than 2 images combined with some additional knowledge about the cameras used. Readers who want to obtain more practical information about how to implement such uncalibrated structure-from-motion pipelines may be interested in two more Foundations and Trends issues written by the same authors. Together with this issue they can be read as a single tutorial on the subject.

posted by maetel
2009. 8. 18. 21:29 Computer Vision
Nistér, D. 2004. An Efficient Solution to the Five-Point Relative Pose Problem. IEEE Trans. Pattern Anal. Mach. Intell. 26, 6 (Jun. 2004), 756-777. DOI= http://dx.doi.org/10.1109/TPAMI.2004.17
An efficient solution to the five-point relative pose problem
Nister, D.  
Sarnoff Corp., Princeton, NJ, USA;

This paper appears in: Pattern Analysis and Machine Intelligence, IEEE Transactions on
Publication Date: June 2004
Volume: 26,  Issue: 6
On page(s): 756-770 An Efficient Solution to the Five-Point Relative Pose Problem

David Nist´er
Sarnoff Corporation
Center for Visualization and Virtual Environments and the Computer Science Department of University of Kentucky


H. Stewenius, C. Engels, and D. Niste. Recent developments on direct relative orientation.
ISPRS Journal of Photogrammetry and Remote Sensing, 60:284-294, June 2006.


Calibrated Fivepoint Solver
http://www.vis.uky.edu/~dnister/Executables/RelativeOrientation/


Dhruv Batra, Bart Nabbe, and Martial Hebert. An Alternative Formulation for the Five Point Relative Pose Problem. IEEE Workshop on Motion and Video Computing 2007 (WMVC '07).
http://www.ece.cmu.edu/~dbatra/research/fivept/fivept.html


Five-Point Motion Estimation Made Easy
Hongdong Li and Richard Hartley (RSISE, The Australian National University. Canberra Research Labs, National ICT Australia.)





preview



SfM = structure from motion
http://en.wikipedia.org/wiki/Structure_from_motion

eight-point algorithm
http://en.wikipedia.org/wiki/Eight-point_algorithm
algorithm used in computer vision to estimate the essential matrix or the fundamental matrix related to a stereo camera pair from a set of corresponding image points

Richard Hartley and Andrew Zisserman (2003). Multiple View Geometry in computer vision. Cambridge University Press.
http://www.robots.ox.ac.uk/~vgg/hzbook/
ch.8 - ch.10

Richard I. Hartley (June 1997). "In Defense of the Eight-Point Algorithm". IEEE Transaction on Pattern Recognition and Machine Intelligence 19 (6): 580–593. doi:10.1109/34.601246.

Richard Szeliski, Microsoft Research
Computer Vision: Algorithms and Applications
ch.7 Structure from Motion

Epipolar geometry - Fundamental matrix


'Computer Vision' 카테고리의 다른 글

Epipolar geometry - Fundamental matrix  (0) 2009.08.19
Richard Hartley <In defense of the eight-point algorithm>  (0) 2009.08.19
UNIX references  (0) 2009.08.17
PTAM to be dissected on OS X  (0) 2009.08.17
PTAM test log on Mac OS X  (7) 2009.08.05
posted by maetel
2009. 4. 16. 15:26 Footmarks
Richard Hartley
http://users.rsise.anu.edu.au/~hartley/

http://users.rsise.anu.edu.au/~jaehak/

http://users.rsise.anu.edu.au/~hongdong/


<Camera Motion Estimation for Multi-Camera Systems>

Urban mapping and construction of 3D urban models has become a popular area of research recently.  The object is to construct models from images taken by a vehicle moving in the urban environment. Typically such a vehicle will take images on both sides simultaneously, with cameras pointing in opposite directions.  Part of the problem is to estimate the motion of the vehicle from a sequence of images taken by the non-overlapping cameras.  I will discuss methods of doing this task, leading to three different algorithms that we have developed for estimating the motion of a rig with non-overlapping cameras.


2009-04-16 나무 @GA705

'Footmarks' 카테고리의 다른 글

RoSEC 2010 winter school  (0) 2010.01.14
CUDA  (0) 2009.04.24
음악의 경계를 넘다: (3) 음악과 소리, 그 경계의 애매함  (0) 2008.05.11
Stephen Lin "Seeing the World as It Really is"  (0) 2008.05.07
라울 자무디오 강연  (0) 2008.03.29
posted by maetel