Results 11 to 20 of about 190,183 (161)

An approach to identify time consistent model parameters: sub-period calibration [PDF]

open access: yesHydrology and Earth System Sciences, 2013
Conceptual hydrological models rely on calibration for the identification of their parameters. As these models are typically designed to reflect real catchment processes, a key objective of an appropriate calibration strategy is the determination of ...
S. Gharari   +3 more
doaj   +1 more source

A Simple Calibration and Verification Method for Solid-State Lidar

open access: yesShanghai Jiaotong Daxue xuebao, 2021
In order to solve the problem of cumbersome external parameter calibration of solid-state lidar and overcome the difficulty in verifying its calibration results, a simple calibration and verification method for solid-state lidar is proposed.
YANG Yiwen, HE Yuesheng, WANG Chunxiang, YANG Ming
doaj   +1 more source

SURE‐based automatic parameter selection for ESPIRiT calibration [PDF]

open access: yesMagnetic Resonance in Medicine, 2020
PurposeESPIRiT is a parallel imaging method that estimates coil sensitivity maps from the auto‐calibration region (ACS). This requires choosing several parameters for the optimal map estimation. While fairly robust to these parameter choices, occasionally, poor selection can result in reduced performance.
Siddharth Iyer   +4 more
openaire   +3 more sources

A Set of Point-Targets-Based Polarimetric Calibration Methods Based on General Polarimetric System Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Freeman proposed a general polarimetric system model in 1991 for the characterization and calibration of fully polarimetric synthetic aperture radar (SAR) systems.
Weibin Liang
doaj   +1 more source

Improved Direct Linear Transformation for Parameter Decoupling in Camera Calibration

open access: yesAlgorithms, 2016
For camera calibration based on direct linear transformation (DLT), the camera’s intrinsic and extrinsic parameters are simultaneously calibrated, which may cause coupling errors in the parameters and affect the calibration parameter accuracy.
Zhenqing Zhao   +4 more
doaj   +1 more source

High-Precision External Parameter Calibration Method for Camera and Lidar Based on a Calibration Device

open access: yesIEEE Access, 2023
The fusion of camera and lidar plays an important role in the field of robotic perception. The accurate external parameter calibration is a necessary prerequisite for sensor fusion.
Song Fan   +3 more
doaj   +1 more source

MEASUREMENT ACCURACY ON 3D POINT CLOUD GENERATED USING MULTISPECTRAL IMAGERY BY DIFFERENT CALIBRATION METHODS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
The state-of-the-art lightweight multispectral cameras are widely used for low altitude remote sensing, also can be exploited as a tool for close-range photogrammetry application.
K. Zainuddin   +4 more
doaj   +1 more source

Camera model and parameter calibration

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract Each camera has its own model and parameters. Accurate calibration of the camera’s model parameters can effectively prevent distortion effects and ensure image imaging. In this paper, the three-dimensional space points of the camera model are linked with the two-dimensional image points, and the in-plane distortion parameters of
Xingxing Li   +3 more
openaire   +1 more source

Uncertainty of CERES-Maize Calibration under Different Irrigation Strategies Using PEST Optimization Algorithm

open access: yesAgronomy, 2019
An important but rarely studied aspect of crop modeling is the uncertainty associated with model calibration and its effect on model prediction. Biomass and grain yield data from a four-year maize experiment (2008−2011) with six irrigation ...
Quanxiao Fang   +8 more
doaj   +1 more source

Kinematic Calibration of Parallel Robots Based on L-Infinity Parameter Estimation

open access: yesMachines, 2022
Pose accuracy is one of the most important problems in the application of parallel robots. In order to adhere to strict pose error bounds, a new kinematic calibration method is proposed, which includes a new pose error model with 60 error parameters and ...
Dayong Yu
doaj   +1 more source

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