Results 21 to 30 of about 748,203 (294)

Perceiving Object Shape from Specular Highlight Deformation, Boundary Contour Deformation, and Active Haptic Manipulation. [PDF]

open access: yesPLoS ONE, 2016
It is well known that motion facilitates the visual perception of solid object shape, particularly when surface texture or other identifiable features (e.g., corners) are present.
J Farley Norman   +8 more
doaj   +1 more source

Deformation behavior of β titanium alloy tubes in die-less forming with taper shape control

open access: yesJournal of Materials Research and Technology, 2023
The distributions of the outer and inner radii of die-less drawn β titanium alloy tubes were evaluated in the drawing direction to clarify the effect of the deformation behavior of the tube on taper shape control in the die-less forming. Ti–22V–4Al DAT51
Takuma Kishimoto   +2 more
doaj   +1 more source

Direct numerical evaluation of multi-loop integrals without contour deformation

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We propose a method for computing numerically integrals defined via $$i \epsilon $$ i ϵ deformations acting on single-pole singularities. We achieve this without an explicit analytic contour deformation. Our solution is then used to produce precise Monte
Roberto Pittau, Bryan Webber
doaj   +1 more source

The combined Lagrangian advection method [PDF]

open access: yes, 2010
We present and test a new hybrid numerical method for simulating layerwise-two-dimensional geophysical flows. The method radically extends the original Contour-Advective Semi-Lagrangian (CASL) algorithm by combining three computational elements for the ...
Fontane, Jérôme   +3 more
core   +1 more source

Planar contour tracking in the presence of pose and model errors by Kalman filtering techniques [PDF]

open access: yes, 2001
The paper presents a solution to the problem of planar contour tracking with a force-controlled robot. The contour shape is unknown and is characterized at each time step by the curvature together with the orientation angle and arc length.
Staffetti, E.   +3 more
core   +5 more sources

AUTOMATIC DEFORMATION INSPECTION METHOD FOR DIGITAL AERIAL IMAGERY BASED ON STATISTICAL CHARACTERISTICS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The geometric distortion of the push-broom digital aerial imagery can be rectified according to the data of the inertial measurement unit (IMU). The low precision of IMU data will cause the undulant wavelike twist deformations of the push-broom digital ...
Y. Yaohua, Y. Yuan, S. Hai, M. Mingjing
doaj   +1 more source

Contour Tracking in 2D Images Using Particle Filtering [PDF]

open access: yes, 2007
A Monte Carlo algorithm for extracting contours in 2D images is proposed in this paper. A multiple model Particle Filter (PF) for progressive contour growing (tracking) from a starting point is designed, accounting for the convex, noncircular form of ...
Angelova, D   +2 more
core   +4 more sources

The contour-advective semi-Lagrangian hybrid algorithm approach to weather forecasting and freely propagating inertia-gravity waves in the shallow-water system [PDF]

open access: yes, 2009
This thesis is aimed at extending the spherical barotropic contour-advective semi-Lagrangian (CASL) Algorithm, written in 1996 by David Dritschel and Maarten Ambaum, to more complex test cases within the shallow-water context.
Smith, Robert K.
core   +2 more sources

An Overall Deformation Monitoring Method of Structure Based on Tracking Deformation Contour

open access: yesApplied Sciences, 2019
In structural deformation monitoring, traditional methods are mainly based on the deformation data measured at several individual points. As a result, only the discrete deformation, not the overall one, can be obtained, which hinders the researcher from ...
Xi Chu   +4 more
doaj   +1 more source

Study on prediction of surface movement boundary in near horizontal coal seam mining

open access: yesMeikuang Anquan, 2023
Predicting the impact of mining subsidence on the surface is an important link in the planning of ecological restoration and governance, and the drawing of contour map is the prerequisite for this link.
Xueyang SUN   +4 more
doaj   +1 more source

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