Journal ArticleDOI
A flexible new technique for camera calibration
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TLDR
A flexible technique to easily calibrate a camera that only requires the camera to observe a planar pattern shown at a few (at least two) different orientations is proposed and advances 3D computer vision one more step from laboratory environments to real world use.Abstract:
We propose a flexible technique to easily calibrate a camera. It only requires the camera to observe a planar pattern shown at a few (at least two) different orientations. Either the camera or the planar pattern can be freely moved. The motion need not be known. Radial lens distortion is modeled. The proposed procedure consists of a closed-form solution, followed by a nonlinear refinement based on the maximum likelihood criterion. Both computer simulation and real data have been used to test the proposed technique and very good results have been obtained. Compared with classical techniques which use expensive equipment such as two or three orthogonal planes, the proposed technique is easy to use and flexible. It advances 3D computer vision one more step from laboratory environments to real world use.read more
Citations
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Journal ArticleDOI
3-D Time-Varying Scene Capture Technologies—A Survey
Elena Stoykova,A. Aydin Alatan,Philip William Benzie,Nikos Grammalidis,Sotiris Malassiotis,Jörn Ostermann,S. Piekh,V. Sainov,Christian Theobalt,Thangavel Thevar,Xenophon Zabulis +10 more
TL;DR: High-resolution digital holography and pattern projection techniques such as coded light or fringe projection for real-time extraction of 3D object positions and color information could manifest themselves as an alternative to traditional camera-based methods.
Proceedings ArticleDOI
Pocket reflectometry
TL;DR: A new algorithm for BRDF reconstruction is developed which works directly on these LDR responses, without knowing the light or camera position, or acquiring HDR lighting, and extends the basic algorithm to also recover varying surface normals.
Journal ArticleDOI
Fast Ego-motion Estimation with Multi-rate Fusion of Inertial and Vision
TL;DR: This paper presents a tracking system for ego-motion estimation which fuses vision and inertial measurements using EKF and UKF (Extended and Unscented Kalman Filters), where a comparison of their performance has been done.
Journal ArticleDOI
3D Reconstruction from Multiple Images Part 1: Principles
TL;DR: This issue discusses methods to extract three-dimensional (3D) models from plain images that are obtained from images for which the camera parameters are unknown and the principles underlying such uncalibrated structure-from-motion methods are outlined.
Proceedings ArticleDOI
The Digital Emily project: photoreal facial modeling and animation
TL;DR: This course describes how high-resolution face scanning, advanced character rigging, and performance-driven facial animation were combined to create Digital Emily, a believably photorealistic digital actor.
References
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Journal ArticleDOI
A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lenses
TL;DR: In this paper, a two-stage technique for 3D camera calibration using TV cameras and lenses is described, aimed at efficient computation of camera external position and orientation relative to object reference coordinate system as well as the effective focal length, radial lens distortion, and image scanning parameters.
Book
A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lenses
TL;DR: A new technique for three-dimensional camera calibration for machine vision metrology using off-the-shelf TV cameras and lenses using two-stage technique has advantage in terms of accuracy, speed, and versatility over existing state of the art.
Proceedings Article
Three-dimensional computer vision: a geometric viewpoint
TL;DR: Results from constrained optimization some results from algebraic geometry differential geometry are shown.