Results 21 to 30 of about 846,909 (243)

Real world coordinate from image coordinate using single calibrated camera based on analytic geometry [PDF]

open access: yes, 2013
The determination of real world coordinate from image coordinate has many applications in computer vision. This paper proposes the algorithm for determination of real world coordinate of a point on a plane from its image coordinate using single ...
Abdullah, Azizi   +2 more
core   +1 more source

Development of Quick Three-Dimensional Shape Measurement Projection Mapping System Using a Whole-Space Tabulation Method

open access: yesApplied Sciences, 2019
A grating projection method is often used as a highly accurate 3D shape measurement method. A real-time 3D shape measurement system can also be applied to measure a wide and smooth curved surface, such as in sheet metal processing.
Sodai Suzuki   +4 more
doaj   +1 more source

A Novel AVM Calibration Method Using Unaligned Square Calibration Boards

open access: yesSensors, 2021
An around view monitoring (AVM) system acquires the front, rear, left, and right-side information of a vehicle using four cameras and transforms the four images into one image coordinate system to monitor around the vehicle with one image.
Jung Hyun Lee, Dong-Wook Lee
doaj   +1 more source

2-DOF Angle Measurement of Rocket Nozzle with Multivision

open access: yesAdvances in Mechanical Engineering, 2013
A real-time measurement method is presented for the 2-DOF swing angles of rocket nozzle by the use of multivision and rocket nozzle rotation axes.
Yubo Guo   +4 more
doaj   +1 more source

Establishment of a method for correcting the image coordinates of a target captured by a robotic fish with rolling motion

open access: yesNihon Kikai Gakkai ronbunshu, 2021
A robotic fish is ideal for an ecological survey of underwater life, because underwater animals cannot easily notice the robot. However, when a robotic fish swings its body to swim, it makes a rolling motion due to movements of the center of gravity and ...
Naoki KAWASAKI   +2 more
doaj   +1 more source

Relating vanishing points to catadioptric camera calibration [PDF]

open access: yes, 2013
This paper presents the analysis and derivation of the geometric relation between vanishing points and camera parameters of central catadioptric camera systems.
Allinson, Nigel   +2 more
core   +1 more source

Locally Orderless Registration [PDF]

open access: yes, 2012
Image registration is an important tool for medical image analysis and is used to bring images into the same reference frame by warping the coordinate field of one image, such that some similarity measure is minimized.
Darkner, Sune, Sporring, Jon
core   +2 more sources

Analytical review of software-algorithmic methods of processing of measuring information about geometrical parameters of objects in images

open access: yesТехнічна інженерія, 2023
The paper considers software-algorithmic methods and computational aspects of operations of transformation of coordinates of points in the plane. These procedures include: finding new rectangular coordinates of a vector when rotating it (or a coordinate ...
Yu.O. , L.O. , V.V. , Yu.M. , O.О.
doaj   +1 more source

Eutactic quantum codes

open access: yes, 2003
We consider sets of quantum observables corresponding to eutactic stars. Eutactic stars are systems of vectors which are the lower dimensional ``shadow'' image, the orthogonal view, of higher dimensional orthonormal bases.
D. Hasse   +13 more
core   +1 more source

Image Theory for Neumann Functions in the Prolate Spheroidal Geometry

open access: yesAdvances in Mathematical Physics, 2018
Interior and exterior Neumann functions for the Laplace operator are derived in terms of prolate spheroidal harmonics with the homogeneous, constant, and nonconstant inhomogeneous boundary conditions.
Changfeng Xue   +2 more
doaj   +1 more source

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