Results 71 to 80 of about 1,353 (200)
Evolutionary Based Autocalibration from the Fundamental Matrix
, 2002 We describe a new method of achieving autocalibration that uses a stochastic optimization approach taken from the field of evolutionary computing and we perform a number of experiments on standardized data sets that show the effectiveness of the ...
Roth, Gerhard +3 more
core +1 more source
Estimation of effective porosity in large-scale groundwater models by combining particle tracking, auto-calibration and 14C dating [PDF]
Hydrology and Earth System Sciences, 2018 Effective porosity plays an important role in contaminant management. However, the effective porosity is often assumed to be constant in space and hence heterogeneity is either neglected or simplified in transport model calibration.
R. Meyer +4 more
doaj +1 more source
Real‐Time Deep‐Learning Image Reconstruction and Instrument Tracking in MR‐Guided Biopsies
Journal of Magnetic Resonance Imaging, Volume 63, Issue 2, Page 475-483, February 2026.ABSTRACT Background Transrectal in‐bore MR‐guided biopsy (MRGB) is accurate but time‐consuming, limiting clinical throughput. Faster imaging could improve workflow and enable real‐time instrument tracking. Existing acceleration methods often use simulated data and lack validation in clinical settings.
Constant R. Noordman +5 more
wiley +1 more source
Autocalibration from Tracks of Walking People [PDF]
Procedings of the British Machine Vision Conference 2006, 2006 It has been shown that under a small number of assumptions, observations of people can be used to obtain metric calibration information of a camera, which is particularly useful for surveillance applications. However, previous work had to exclude the common criticial configuration of the camera’s principal point falling on the horizon line and very ...
Nils Krahnstoever, Paulo R. S. Mendonça
openaire +1 more source
Facilitating PTZ Camera Auto-Calibration to Be Noise Resilient With Two Images
IEEE Access, 2019 This paper presents a simple but effective technique to calibrate a PTZ (Pan/Tilt/Zoom) camera by using only two images for five intrinsic parameters: focal length, aspect ratio, the principle point coordinates and the distortion coefficient.
Rui Wang, Ran Huang, Jiaoru Yang
doaj +1 more source
Autocalibration method for scanning electron microscope using affine camera model
, 2020 International audienceThis paper deals with the task of autocalibration of scanning electron microscope (SEM), which is a technique allowing to compute camera motion and intrinsic parameters. In contrast to classical calibration, which implies the use of
Guelpa, Valerian +6 more
core +1 more source
Magnetic Resonance in Medicine, Volume 95, Issue 1, Page 86-100, January 2026.Abstract Purpose Isotropic submillimeter high‐resolution functional MRI (fMRI) facilitates noninvasive investigation of neuronal activities at the mesoscale level, including cortical columns and laminae. However, the task‐evoked functional activity becomes less detectable when using single‐shot echo planar imaging (EPI) with parallel imaging techniques
Guoxiang Liu +2 more
wiley +1 more source
Extrinsics autocalibration for dense planar visual odometry [PDF]
, 2014 A single downward-looking camera can be used as a high-precision visual odometry sensor in a wide range of real-world mobile robotics applications. In particular, a simple and computationally efficient dense alignment approach can take full advantage of ...
Zienkiewicz, J, Davison, A
core +1 more source
Predictive signal modeling and multi‐rate filtering in accelerated cardiac MRI
Magnetic Resonance in Medicine, Volume 95, Issue 1, Page 585-600, January 2026.Abstract Purpose True real‐time cardiac MRI (CMR), necessary for capturing live cardiac dynamics and imaging irregular cardiac rhythms, remains challenging. In this article, we move toward real‐time CMR in multiple reconstruction frameworks via strategies to predict cardiac motion, improve computational efficiency, reduce artifacts, and preserve ...
Aaron D. Curtis +6 more
wiley +1 more source
Autocalibration of Vibration Sensors
, 2008 The main objective of this thesis is presentation of various features of technical diagnostics, such as autodiagnostics and autocalibration. Thesis describes ways to diagnostics of rotocure, presents various types of sensors used in vibrodiagnostics and ...
Macháčková, Petra
core +1 more source