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Geometric Calibration for Cameras with Inconsistent Imaging Capabilities [PDF]

open access: yesSensors, 2022
Traditional calibration methods rely on the accurate localization of the chessboard points in images and their maximum likelihood estimation (MLE)-based optimization models implicitly require all detected points to have an identical uncertainty.
Ke Wang, Chuhao Liu, Shaojie Shen
doaj   +5 more sources

A geometric calibration method for the digital chest tomosynthesis with dual-axis scanning geometry. [PDF]

open access: yesPLoS ONE, 2019
The aim of this study was to develop a geometric calibration method capable of eliminating the reconstruction artifacts of geometric misalignments in a tomosynthesis prototype with dual-axis scanning geometry.
Chia-Hao Chang   +5 more
doaj   +2 more sources

FPGA-Based On-Board Geometric Calibration for Linear CCD Array Sensors [PDF]

open access: yesSensors, 2018
With increasing demands in real-time or near real-time remotely sensed imagery applications in such as military deployments, quick response to terrorist attacks and disaster rescue, the on-board geometric calibration problem has attracted the attention ...
Guoqing Zhou   +6 more
doaj   +2 more sources

The Conception of Test Fields for Fast Geometric Calibration of the FLIR VUE PRO Thermal Camera for Low-Cost UAV Applications [PDF]

open access: yesSensors, 2022
The dynamic evolution of photogrammetry led to the development of numerous methods of geometric calibration of cameras, which are mostly based on building flat targets (fields) with features that can be distinguished in the images.
Anna Fryskowska-Skibniewska   +3 more
doaj   +2 more sources

Infrared Camera Geometric Calibration: A Review and a Precise Thermal Radiation Checkerboard Target [PDF]

open access: yesSensors, 2023
Different infrared (IR) planar geometric calibration targets have been developed over the years that exploit a well-established and flexible optical camera geometric calibration procedure following the pinhole approximation. This geometric calibration is
Ahmed ElSheikh   +3 more
doaj   +2 more sources

COMPARISON OF METHODS FOR GEOMETRIC CAMERA CALIBRATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Methods for geometric calibration of cameras in close-range photogrammetry are established and well investigated. The most common one is based on test-fields with well-known pattern, which are observed from different directions.
J. Hieronymus
doaj   +4 more sources

An Improved Geometric Calibration Model for Spaceborne SAR Systems With a Case Study of Large-Scale Gaofen-3 Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Synthetic aperture radar (SAR) image positioning is commonly affected by factors such as platform instability, aging of onboard instruments, and changing observation environments.
Yongjiu Feng   +4 more
doaj   +1 more source

First Assessment of Bistatic Geometric Calibration and Geolocation Accuracy of Innovative Spaceborne Synthetic Aperture Radar LuTan-1

open access: yesRemote Sensing, 2023
LuTan-1 (LT-1) is a bistatic synthetic aperture radar (BiSAR) system consisting of two identical L-band SAR satellites. The bistatic mode of LT-1 plays a critical role in generating high-precision digital elevation models (DEMs), which requires precise ...
Jingwen Mou   +6 more
doaj   +1 more source

HYBRID GEOMETRIC CALIBRATION METHOD FOR MULTI-PLATFORM SPACEBORNE SAR IMAGE WITH SPARSE GCPS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Geometric calibration is able to provide high-accuracy geometric coordinates of spaceborne SAR image through accurate geometric parameters in the Range-Doppler model by ground control points (GCPs).
G. Lv   +5 more
doaj   +1 more source

Method for Determining Elements of Internal Orientation Calibration in Multi-Matrix Optoelectronic Devices

open access: yesНаука и техника, 2020
In the operation schemes of optical electronic devices (OED), such as digital autocollimators, direction finders, Shack-Hartmann sensors, as well as astro-orientation systems, projection measuring systems, geometric calibration schemes for OED, the photo-
M. A. Starasotnikau   +2 more
doaj   +1 more source

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