Some Properties of the E Matrix in Two-View Motion Estimation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Motion from point matches: multiple of solutions
International Journal of Computer Vision
Shape and motion from image streams under orthography: a factorization method
International Journal of Computer Vision
Numerical recipes in C (2nd ed.): the art of scientific computing
Numerical recipes in C (2nd ed.): the art of scientific computing
Three-dimensional computer vision: a geometric viewpoint
Three-dimensional computer vision: a geometric viewpoint
Computation of fixed surface features
Pattern Recognition Letters
Self-Calibration of Stationary Cameras
International Journal of Computer Vision
3D Surface Estimation and Model Construction From Specular Motion in Image Sequences
IEEE Transactions on Pattern Analysis and Machine Intelligence
Self-Calibration of a Moving Camera from PointCorrespondences and Fundamental Matrices
International Journal of Computer Vision
Stratified Self-Calibration with the Modulus Constraint
IEEE Transactions on Pattern Analysis and Machine Intelligence
Multiple view geometry in computer visiond
Multiple view geometry in computer visiond
Epipolar Geometry from Profiles under Circular Motion
IEEE Transactions on Pattern Analysis and Machine Intelligence
Epipolar Geometry in Stereo, Motion, and Object Recognition: A Unified Approach
Epipolar Geometry in Stereo, Motion, and Object Recognition: A Unified Approach
Estimation of Relative Camera Positions for Uncalibrated Cameras
ECCV '92 Proceedings of the Second European Conference on Computer Vision
Camera Self-Calibration: Theory and Experiments
ECCV '92 Proceedings of the Second European Conference on Computer Vision
Direct Methods for Self-Calibration of a Moving Stereo Head
ECCV '96 Proceedings of the 4th European Conference on Computer Vision-Volume II - Volume II
In defence of the 8-point algorithm
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
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Recently, there have been active researches on structure from discrete motion or shape from image sequences. In order to compute metric shapes, we may use a stereo algorithm with calibration parameters, or algorithms with a self-calibration method from three or more images. In this paper, we show a method of computing a shape from two images without using a calibration target. First, the camers system is constrained such that the intrinsic and the extrinsic parameters are limited to a minimum number. Then the constraints are relaxed step-by-step until real situations can be handled. The values of the parameters of the restricted system are used as the initial values to the more general configuration. This method can be used when we restrict the motion between two cameras. First, we derive equations with strict constraints, and later we relax the constraints to handle realistic situations. Experimental results with real images showed the validity of our algorithm.