Results 1 to 10 of about 1,029,905 (279)

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   +8 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

On-Orbit Geometric Calibration Model and Its Applications for High-Resolution Optical Satellite Imagery

open access: yesRemote Sensing, 2014
On-orbit geometric calibration is a key technology to guarantee the geometric quality of high-resolution optical satellite imagery. In this paper, we present an approach for the on-orbit geometric calibration of high-resolution optical satellite imagery,
Mi Wang, Bo Yang, Fen Hu, Xi Zang
doaj   +3 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   +3 more sources

Geometric Calibration and Radiometric Correction of LiDAR Data and Their Impact on the Quality of Derived Products

open access: yesSensors, 2011
LiDAR (Light Detection And Ranging) systems are capable of providing 3D positional and spectral information (in the utilized spectrum range) of the mapped surface.
Wai-Yeung Yan   +3 more
doaj   +3 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

Geometric Self-Calibration of YaoGan-13 Images Using Multiple Overlapping Images

open access: yesSensors, 2019
Geometric calibration is an important means of improving the absolute positioning accuracy of space-borne synthetic aperture radar imagery. The conventional calibration method is based on a calibration field, which is simple and convenient, but requires ...
Guo Zhang   +3 more
doaj   +3 more sources

On-Orbit Geometric Calibration and Validation of Luojia 1-01 Night-Light Satellite

open access: yesRemote Sensing, 2019
The Luojia 1-01 Satellite (LJ1-01) is the first professional night-light remote-sensing satellite in China, and thus, it is of pioneering significance for the development of night-light remote sensing satellites in China and the application of remote ...
Guo Zhang   +5 more
doaj   +3 more sources

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