Estimating Consistent Motion from Three Views: An Alternative to Trifocal Analysis
نویسندگان
چکیده
The main goal of this paper is to introduce methods for three-view motion analysis that do not need threefold correspondences in the image planes as the well-known trifocal tensor methods do. With this characteristic, the proposed method is a practically very advantageous approach for (ego-)motion analysis and structure from motion. The proposed method starts with three two-view parameter estimates generated by Hartley/Mühlich-equilibrated TLS solutions, enforces geometrical consistency and iteratively optimizes the distances from the set of epipolar lines.
منابع مشابه
Lines in One Orthographic and Two Perspective Views
In this paper we introduce a linear algorithm to recover the Euclidean motion between an orthographic and two perspective cameras from straight line correspondences filling the gap in the analysis of motion estimation from line correspondences for various projection models. The general relationship between lines in three views is described by the trifocal tensor [2]. Euclidean structure from mo...
متن کاملStructure from Motion from Three Affine Views
We describe a new method for Structure From Motion from three affine views. The central idea of the method is to explore the intrinsic three-view properties instead of previous two-view ones. The first key observation is that an affine camera is indeed essentially a one-dimensional projective camera operating on the plane at infinity : we prove that the essential motion—relative camera orientat...
متن کاملTrifocal motion modeling for object-based video compression and manipulation
Following a brief overview of two-dimensional (2-D) parametric motion models commonly used in video manipulation and compression, we introduce trifocal transfer, which is an image-based scene representation used in computer vision, as a motion compensation method that uses three frames at a time to implicitly capture camera/scene motion and scene depth. Trifocal transfer requires a trifocal ten...
متن کاملA Nonlinear Method for Estimating the Projective Geometry of Three Views
Given three partially overlapping views of a scene from which a set of point correspondences have been extracted, recover the three trifocal tensors between the three views. We give a new way of deriving the trifocal tensor based on Grassmann-Cayley algebra that sheds some new light on its structure. We show that our derivation leads to a complete characterization of its geometric and algebraic...
متن کاملGeometry of Single Axis Motions Using Conic Fitting
Previous algorithms for recovering 3D geometry from an uncalibrated image sequence of a single axis motion of unknown rotation angles are mainly based on the computation of two-view fundamental matrices and three-view trifocal tensors. In this paper, we propose three new methods that are based on fitting a conic locus to corresponding image points over multiple views. The main advantage is that...
متن کامل