Results 61 to 70 of about 274,693 (175)

Survey on differential estimators for 3d point clouds

Computer Graphics Forum, EarlyView.
Abstract Recent advancements in 3D scanning technologies, including LiDAR and photogrammetry, have enabled the precise digital replication of real‐world objects. These methods are widely used in fields such as GIS, robotics, and cultural heritage. However, the point clouds generated by such scans are often noisy and unstructured, posing challenges for ...
Léo Arnal–Anger, Thibault Lejemble, David Coeurjolly, Loïc Barthe, Nicolas Mellado   +4 more
wiley   +1 more source

Isometries of *-invariant subspaces

, 1974
We consider families of increasing ∗ ^\ast -invariant subspaces of H 2 ( D ) {H^2}(D) , and from these we construct canonical
Arthur Lubin
core   +1 more source

On the explicit Hermitian solutions of the continuous‐time algebraic Riccati matrix equation for controllable systems

IET Control Theory & Applications
This paper proposes explicit solutions for the algebraic Riccati matrix equation. For single‐input systems in controllable canonical form, the explicit Hermitian solutions of the non‐homogeneous Riccati equation are obtained using the entries of the ...
Liangyin Zhang, Michael Z. Q. Chen, Zhiwei Gao, Lifeng Ma   +3 more
doaj   +1 more source

Establishing Shape Correspondences: A Survey

Computer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

Canonical Partitions in the Restricted Linear Model [PDF]

In the linear model y = X + " under the restriction C = 0 a canonical partition C = [C0;C1] of the rows of C admits a simple representation of linear subspaces of values = X .
Genugten, B.B. van der
core  

On The Largest Principal Angle Between Random Subspaces

, 2004
Formulas are derived for the probability density function and the probability distribution function of the largest canonical angle between two p-dimensional subspaces of chosen from the uniform distribution on the Grassmann manifold (which is the ...
Edelman, A, Koev, P, A. Edelman, Absil, Pierre-Antoine, P.-A. Absil, P. Koev   +5 more
core   +1 more source

Nonuniform Sampling in L^p-Subspaces Associated with the Multi-Dimensional Special Affine Fourier Transform

Axioms
In this paper, the sampling and reconstruction problems in function subspaces of Lp(Rn) associated with the multi-dimensional special affine Fourier transform (SAFT) are discussed. First, we give the definition of the multi-dimensional SAFT and study its
Yingchun Jiang, Jing Yang
doaj   +1 more source

Asymptotic symmetries, holography and topological hair

Journal of High Energy Physics, 2018
Asymptotic symmetries of AdS4 quantum gravity and gauge theory are derived by coupling the holographically dual CFT3 to Chern-Simons gauge theory and 3D gravity in a “probe” (large-level) limit.
Rashmish K. Mishra, Raman Sundrum
doaj   +1 more source

Phong‐Rodrigues Extrinsic Vector‐Field Processing

Computer Graphics Forum, EarlyView.
Abstract We introduce a new extrinsic discretization of tangent vector fields on triangle meshes that is continuous, with bounded derivatives that are continuous almost everywhere, supporting pointwise evaluation and integration of differential operators.
Hongyi Liu, Oded Stein, Amir Vaxman, Mirela Ben‐Chen, Misha Kazhdan   +4 more
wiley   +1 more source

Semiparametric Estimation of Fractional Cointegrating Subspaces [PDF]

We consider a common components model for multivariate fractional cointegration, in which the s>=1 components have different memory parameters. The cointegrating rank is allowed to exceed 1.
Willa Chen, Clifford Hurvich
core