Results 1 to 10 of about 605 (137)
Evolution Based Single Camera Resectioning Based on Distance Maps of a Known Geometry for Squash Sports [PDF]
IEEE Access, 2022 Nowadays, video recordings of sport events is standard practice for a variety of applications, ranging from entertainment to competition analysis. Beside that, analysis of athletes while exercising is of particular interest for their coaches in order to ...
C. Brumann, M. Kukuk
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Algebra and Geometry of Camera Resectioning [PDF]
, 2023 We study algebraic varieties associated with the camera resectioning problem. We characterize these resectioning varieties' multigraded vanishing ideals using Gr\"obner basis techniques. As an application, we derive and re-interpret celebrated results in
Erin Connelly +2 more
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Algebra and geometry of camera resectioning [PDF]
Mathematics of ComputationWe study algebraic varieties associated with the camera resectioning problem. We characterize these resectioning varieties’ multigraded vanishing ideals using Gröbner basis techniques. As an application, we derive and re-interpret celebrated results in geometric computer vision related to camera-point duality. We also clarify some relationships between
Erin Connelly +2 more
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Camera Resectioning from a Box [PDF]
, 2009 In this paper we describe how we can do camera resectioning from a box with unknown dimensions, i.e. determine the camera model, assuming that image pixels are square. This assumption is equivalent to assuming that the camera has an aspect ratio of one and zero skew, and this holds for most -- if not all -- digital cameras. Our proposed method works by
Henrik Aanæs +4 more
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Line-Constrained Camera Location Estimation in Multi-Image Stereomatching. [PDF]
Sensors (Basel), 2017 Stereomatching is an effective way of acquiring dense depth information from a scene when active measurements are not possible. So-called lightfield methods take a snapshot from many camera locations along a defined trajectory (usually uniformly linear ...
Donné S, Goossens B, Philips W.
europepmc +4 more sources
Camera Resectioning from Image Edges with the $L_\infty$-Norm Using Linear Programming [PDF]
Procedings of the British Machine Vision Conference 2011, 2011 Yang Li +4 more
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Current Directions in Biomedical Engineering, 2021 Camera resectioning is the process of finding the intrinsic and extrinsic parameters of the pinhole camera model. A mobile X-ray device (C-arm) can be represented with the pinhole camera model.
Alvarez-Gomez Julio C. +2 more
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Journal of the Korean Ophthalmological Society, 2022 Purpose: To compare the eyelid blink characteristics of patients with ptosis assessed using a cellphone camera before and after levator resection.Methods: In this prospective study, pictures and videos of eyelid blinking were obtained from 40 eyes (20 patients with ptosis) at a margin reflex distance 1 (MRD1) of 3.0 mm or less before and 1 month after ...
Yoo Jin Kim, In-Ki Park, Jae-Ho Shin
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MLPnP - A Real-Time Maximum Likelihood Solution to the Perspective-n-Point Problem [PDF]
, 2016 In this paper, a statistically optimal solution to the Perspective-n-Point (PnP) problem is presented. Many solutions to the PnP problem are geometrically optimal, but do not consider the uncertainties of the observations.
Hinz, Stefan +2 more
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Geometric calibration of Colour and Stereo Surface Imaging System of ESA's Trace Gas Orbiter [PDF]
, 2017 There are many geometric calibration methods for "standard" cameras. These methods, however, cannot be used for the calibration of telescopes with large focal lengths and complex off-axis optics.
Cremonese, Gabriele +7 more
core +2 more sources