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RADIOMETRIC BLOCK ADJUSMENT AND DIGITAL RADIOMETRIC MODEL GENERATION

A. Pros, I. Colomina, J. A. Navarro, R. Antequera, P. Andrinal
2013 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
In this paper we present a radiometric block adjustment method that is related to geometric block adjustment and to the concept of a terrain Digital Radiometric Model (DRM) as a complement to the terrain  ...  digital elevation and surface models.  ...  ACKNOWLEDGEMENTS The research reported in this paper was carried out in the frame of the AUTORADCOR project that was partially funded by the "Centro para el Desarrollo Tecnológico Industrial" (CDTI), "  ... 
doi:10.5194/isprsarchives-xl-1-w1-293-2013 fatcat:nkukzrlk5nfvlexqu3vvbonla4

ANALYSIS OF THE RADIOMETRIC RESPONSE OF ORANGE TREE CROWN IN HYPERSPECTRAL UAV IMAGES

N. N. Imai, E. A. S. Moriya, E. Honkavaara, G. T. Miyoshi, M. V. A. de Moraes, A. M. G. Tommaselli, R. Näsi
2017 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
very small, so the quality of mosaic is good enough for many applications.  ...  to produce a georeferenced mosaic in which the standard Reflectance Factor for the nadir is represented.  ...  This research has been jointly funded by the São Paulo Research Foundation (FAPESPgrant 2013/50426-4) and Academy of Finlanddecision number 273806) as well by the AGT-Bravium-Fundunesp.  ... 
doi:10.5194/isprs-archives-xlii-3-w3-73-2017 fatcat:5p6vvuqbbjazbksbreemdhzj24

High‐resolution hyperspectral imagery from pushbroom scanners on unmanned aerial systems

Jae‐In Kim, Junhwa Chi, Ali Masjedi, John Evan Flatt, Melba M. Crawford, Ayman F. Habib, Joohan Lee, Hyun‐Cheol Kim
2021 Geoscience Data Journal  
This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited  ...  We defined the pixels of the targets and derived an empirical model, ρ = a × L + b, for each spectral band, where ρ is the spectral reflectance value of the radiometric targets; L is the average radiance  ...  The hyperspectral datasets consist of raw/post-processed hyperspectral data, raw/post-processed GNSS/Inertial Measurement Unit (IMU) data and digital surface models (DSMs), and they were radiometrically  ... 
doi:10.1002/gdj3.133 fatcat:xwcyxbn75nfepktziubhuca3yy

PROCEDURES FOR CORRECTING DIGITAL CAMERA IMAGERY ACQUIRED BY THE AGGIEAIR REMOTE SENSING PLATFORM [article]

Shannon Clemens
2021 Zenodo  
A method for calculating reflectance using consumer grade digital cameras.  ...  Researchers often used the empirical line method for reflectance conversions or used digital numbers.  ...  After the BBA, a Digital Terrain Model (DTM) with 10 meter ground resolution was generated for orthocorrection of the mosaic (this is a default ground resolution which will be coarse).  ... 
doi:10.5281/zenodo.5510664 fatcat:566ab4vef5hztn2f7r53zcjy34

Radiometric block adjustment of hyperspectral image blocks in the Brazilian environment

Gabriela Takahashi Miyoshi, Nilton Nobuhiro Imai, Antonio Maria Garcia Tommaselli, Eija Honkavaara, Roope Näsi, Érika Akemi Saito Moriya
2018 International Journal of Remote Sensing  
The objective of this investigation was to study and optimize a hyperspectral unmanned aerial vehicle (UAV)-based remotesensing system for the Brazilian environment.  ...  Five approaches designed to produce mosaics of hyperspectral images, which represent the hemispherical directional reflectance factor of targets in the Brazilian environment, are presented and evaluated  ...  Disclosure statement No potential conflict of interest was reported by the authors.  ... 
doi:10.1080/01431161.2018.1425570 fatcat:pe3cxigwj5eb3onvbe4t2yizpi

IMPACT OF REDUCTION OF RADIOMETRIC RESOLUTION IN HYPERSPECTRAL IMAGES ACQUIRED OVER FOREST FIELD

G. T. Miyoshi, N. N. Imai, A. M. G. Tommaselli, E. Honkavaara
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Finally, it can be inferred that the impact of radiometric transformation can be considered as negligible for the hyperspectral mosaic with 16 bits of radiometric resolution, which presented lower values  ...  After the geometric and radiometric processing of the images, a mosaic was obtained with pixels representing reflectance factor coded in 32 bits.  ...  ACKNOWLEDGEMENTS This research has been jointly funded by the São Paulo Research Foundation (FAPESPgrant 2013/50426-4) and Academy of Finlandgrant number 305994), as well the Conselho Nacional de Desenvolvimento  ... 
doi:10.5194/isprs-archives-xlii-1-301-2018 fatcat:bhvvs6ntive4tpuafusdyrfkka

OPTIMIZING RADIOMETRIC PROCESSING AND FEATURE EXTRACTION OF DRONE BASED HYPERSPECTRAL FRAME FORMAT IMAGERY FOR ESTIMATION OF YIELD QUANTITY AND QUALITY OF A GRASS SWARD

R. Näsi, N. Viljanen, R. Oliveira, J. Kaivosoja, O. Niemeläinen, T. Hakala, L. Markelin, S. Nezami, J. Suomalainen, E. Honkavaara
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
However, the redundancy of the data gives potential for much more versatile and thorough feature extraction.  ...  Light-weight 2D format hyperspectral imagers operable from unmanned aerial vehicles (UAV) have become common in various remote sensing tasks in recent years.  ...  The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLII-3, 2018 ISPRS TC III Mid-term Symposium "Developments, Technologies and Applications in Remote  ... 
doi:10.5194/isprs-archives-xlii-3-1305-2018 fatcat:ecrqva2c6nbpvoacvijhiodg6a

Hyperspectral UAV-imagery and photogrammetric canopy height model in estimating forest stand variables

Sakari Tuominen, Andras Balazs, Eija Honkavaara, Ilkka Pölönen, Heikki Saari, Teemu Hakala, Niko Viljanen
2017 Silva Fennica  
In estimating volume and dimension-related variables, the use of a calibrated image mosaic did not bring significant improvement in the results.  ...  Abstract Remote sensing using unmanned aerial vehicle (UAV) -borne sensors is currently a highly interesting approach for the estimation of forest characteristics. 3D remote sensing data from airborne  ...  Jari Hynynen of Natural Resources Institute Finland for the support in the acquisition of field data for this study.  ... 
doi:10.14214/sf.7721 fatcat:rlixwovltvd67hcog6j7jb4xxe

Application of unmanned aerial systems for high throughput phenotyping of large wheat breeding nurseries

Atena Haghighattalab, Lorena González Pérez, Suchismita Mondal, Daljit Singh, Dale Schinstock, Jessica Rutkoski, Ivan Ortiz-Monasterio, Ravi Prakash Singh, Douglas Goodin, Jesse Poland
2016 Plant Methods  
We determined radiometric calibration methods developed for satellite imagery significantly improved the precision of VIs from the UAS.  ...  Low cost unmanned aerial systems (UAS) have great potential for rapid proximal measurements of plants in agriculture.  ...  International Development Feed the Future Innovation Lab for Applied Wheat Genomics (Cooperative Agreement No.  ... 
doi:10.1186/s13007-016-0134-6 pmid:27347001 pmcid:PMC4921008 fatcat:zozpqxdrwfgj3j65i5i3jwyiri

Radiometric Correction of Close-Range Spectral Image Blocks Captured Using an Unmanned Aerial Vehicle with a Radiometric Block Adjustment

2018 Remote Sensing  
This study focuses on the radiometric calibration and correction of close-range 2D frame format image datasets captured using drones.  ...  An empirical study was carried out using imagery captured using a hyperspectral 2D frame format camera of winter wheat crops.  ...  Acknowledgments: This study was supported by the Academy of Finland, grants No. 273806 and No. 305994.  ... 
doi:10.3390/rs10020256 fatcat:ha5wphqaw5ejnm5sxzdnyzqrzu

HYPERSPECTRAL REFLECTANCE SIGNATURES AND POINT CLOUDS FOR PRECISION AGRICULTURE BY LIGHT WEIGHT UAV IMAGING SYSTEM

E. Honkavaara, J. Kaivosoja, J. Mäkynen, I. Pellikka, L. Pesonen, H. Saari, H. Salo, T. Hakala, L. Marklelin, T. Rosnell
2012 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
It was concluded that the central factors influencing on the accuracy of the estimation process were the quality of the image data, the quality of the image processing and digital surface model generation  ...  A processing chain was developed for the production of high density point clouds and hyperspectral reflectance image mosaics (reflectance signatures), which are used as inputs in the agricultural application  ...  ACKNOWLEDGEMENTS The research carried out in this study was funded by the Academy of Finland (Project No. 134181). We are grateful to Juha Suomalainen for the spectral library routines.  ... 
doi:10.5194/isprsannals-i-7-353-2012 fatcat:u4siixcz5nh4jjcnjvdibdt6cu

METHODOLOGY FOR DIRECT REFLECTANCE MEASUREMENT FROM A DRONE: SYSTEM DESCRIPTION, RADIOMETRIC CALIBRATION AND LATEST RESULTS

L. Markelin, J. Suomalainen, T. Hakala, R. A. Oliveira, N. Viljanen, R. Näsi, B. Scott, T. Theocharous, C. Greenwell, N. Fox, E. Honkavaara
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Requirement for both instruments is that they are radiometrically calibrated, the irradiance sensor has to be horizontally stabilized, and the sensors needs to be accurately synchronized.  ...  The spectral response calibration showed side peaks on several channels that were due to the multiple orders of interference of the FPI and highlighted the importance of accurate calibration.  ...  Furthermore, this study was also supported by the Academy of Finland, grant No. 305994.  ... 
doi:10.5194/isprs-archives-xlii-1-283-2018 fatcat:2vor6gkaurgr7lfrs552ptllda

Multispectral Remote Sensing from Unmanned Aircraft: Image Processing Workflows and Applications for Rangeland Environments

Andrea S. Laliberte, Mark A. Goforth, Caitriana M. Steele, Albert Rango
2011 Remote Sensing  
In this paper, we describe challenges and solutions associated with efficient processing of multispectral imagery to obtain orthorectified, radiometrically calibrated image mosaics for the purpose of rangeland  ...  An object-based image analysis approach was used to derive a species-level vegetation classification for the image mosaic with an overall accuracy of 87%.  ...  We would like to acknowledge the assistance of Steve Heinold of Tetracam Inc. for technical support, Peg Gronemeyer for field data collection efforts, and the Jornada UAS team: Jim Lenz, Connie Maxwell  ... 
doi:10.3390/rs3112529 fatcat:dlciye7zxff4ti2ifucvnlhdni

RADIOMETRIC CORRECTION OF MULTITEMPORAL HYPERSPECTRAL UAS IMAGE MOSAICS OF SEEDLING STANDS

L. Markelin, E. Honkavaara, R. Näsi, N. Viljanen, T. Rosnell, T. Hakala, M. Vastaranta, T. Koivisto, M. Holopainen
2017 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Performance of novel radiometric block adjustment method, developed at Finnish Geospatial Research Institute, is evaluated with multitemporal hyperspectral data set of seedling stands collected during  ...  Novel miniaturized multi- and hyperspectral imaging sensors on board of unmanned aerial vehicles have recently shown great potential in various environmental monitoring and measuring tasks such as precision  ...  ACKNOWLEDGEMENTS The research carried out in this study was financially supported by the Academy of Finland (Project No. 273806) and the MMM project "Taimikoiden tiedonkeruun kehittäminen"  ... 
doi:10.5194/isprs-archives-xlii-3-w3-113-2017 fatcat:pmovr375afe3rfd4agx5hihbqa

Remote Sensing of 3-D Geometry and Surface Moisture of a Peat Production Area Using Hyperspectral Frame Cameras in Visible to Short-Wave Infrared Spectral Ranges Onboard a Small Unmanned Airborne Vehicle (UAV)

Eija Honkavaara, Matti A. Eskelinen, Ilkka Polonen, Heikki Saari, Harri Ojanen, Rami Mannila, Christer Holmlund, Teemu Hakala, Paula Litkey, Tomi Rosnell, Niko Viljanen, Merja Pulkkanen
2016 IEEE Transactions on Geoscience and Remote Sensing  
(FPI) in measuring a 3-D digital surface model and the surface moisture of a peat production area.  ...  for acquisition of the 3-D geometry of the object and multiple object views together with the hyperspectral reflectance signatures.  ...  to create a DSM; 4) determination of a radiometric imaging model to transform the digital numbers (DNs) data into reflectance; 5) calculating the hyperspectral image mosaics; 6) estimating surface moisture  ... 
doi:10.1109/tgrs.2016.2565471 fatcat:255el74x2bd23gnpioex545mdi
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