Results 1 to 10 of about 618 (156)
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
Mathematics of Computation, 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
Connelly, Erin +2 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
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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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 Aanaes +4 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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In-loop Feature Tracking for Structure and Motion with Out-of-core Optimization [PDF]
, 2010 In this paper, a novel and approach for obtaining 3D models from video sequences captured with hand-held cameras is addressed. We define a pipeline that robustly deals with different types of sequences and acquiring devices.
Gallego Bonet, Guillermo +3 more
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Single frame resection of compact digital cameras for UAV imagery
2017 4th International Conference on Electrical Engineering, Computer Science and Informatics (EECSI), 2017 Recently, UAVs (Unmanned Aerial Vehicles) gain a wider acceptance from many disciplines. One major application is for monitoring and mapping. Flying beyond eye sight autonomously and collecting data over large areas are their obvious advantages. To support a large scale urban city mapping, we have developed a UAV system which can carry a compact ...
Martinus Edwin Tjahjadi, Fourry Handoko
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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
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