Advantages in Using Colour Calibration for Orthophoto Reconstruction
UAVs are sensor platforms increasingly used in precision agriculture, especially for crop and environmental monitoring using photogrammetry. In this work, light drone flights were performed on three consecutive days (with different weather conditions) on an experimental agricultural field to evaluat...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/17/6490 |
| _version_ | 1827664991385288704 |
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| author | Francesco Tocci Simone Figorilli Simone Vasta Simona Violino Federico Pallottino Luciano Ortenzi Corrado Costa |
| author_facet | Francesco Tocci Simone Figorilli Simone Vasta Simona Violino Federico Pallottino Luciano Ortenzi Corrado Costa |
| author_sort | Francesco Tocci |
| collection | DOAJ |
| description | UAVs are sensor platforms increasingly used in precision agriculture, especially for crop and environmental monitoring using photogrammetry. In this work, light drone flights were performed on three consecutive days (with different weather conditions) on an experimental agricultural field to evaluate the photogrammetric performances due to colour calibration. Thirty random reconstructions from the three days and six different areas of the field were performed. The results showed that calibrated orthophotos appeared greener and brighter than the uncalibrated ones, better representing the actual colours of the scene. Parameter reporting errors were always lower in the calibrated reconstructions and the other quantitative parameters were always lower in the non-calibrated ones, in particular, significant differences were observed in the percentage of camera stations on the total number of images and the reprojection error. The results obtained showed that it is possible to obtain better orthophotos, by means of a calibration algorithm, to rectify the atmospheric conditions that affect the image obtained. This proposed colour calibration protocol could be useful when integrated into robotic platforms and sensors for the exploration and monitoring of different environments. |
| first_indexed | 2024-03-10T01:16:14Z |
| format | Article |
| id | doaj.art-8fa846db6fd64da4b99911a5e3136393 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T01:16:14Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8fa846db6fd64da4b99911a5e31363932023-11-23T14:09:21ZengMDPI AGSensors1424-82202022-08-012217649010.3390/s22176490Advantages in Using Colour Calibration for Orthophoto ReconstructionFrancesco Tocci0Simone Figorilli1Simone Vasta2Simona Violino3Federico Pallottino4Luciano Ortenzi5Corrado Costa6Consiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyConsiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyConsiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyConsiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyConsiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyConsiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyConsiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA), Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari, Via della Pascolare 16, Monterotondo, 00015 Rome, ItalyUAVs are sensor platforms increasingly used in precision agriculture, especially for crop and environmental monitoring using photogrammetry. In this work, light drone flights were performed on three consecutive days (with different weather conditions) on an experimental agricultural field to evaluate the photogrammetric performances due to colour calibration. Thirty random reconstructions from the three days and six different areas of the field were performed. The results showed that calibrated orthophotos appeared greener and brighter than the uncalibrated ones, better representing the actual colours of the scene. Parameter reporting errors were always lower in the calibrated reconstructions and the other quantitative parameters were always lower in the non-calibrated ones, in particular, significant differences were observed in the percentage of camera stations on the total number of images and the reprojection error. The results obtained showed that it is possible to obtain better orthophotos, by means of a calibration algorithm, to rectify the atmospheric conditions that affect the image obtained. This proposed colour calibration protocol could be useful when integrated into robotic platforms and sensors for the exploration and monitoring of different environments.https://www.mdpi.com/1424-8220/22/17/6490UAVUGVdronesmappingprecision agricultureenvironmental monitoring |
| spellingShingle | Francesco Tocci Simone Figorilli Simone Vasta Simona Violino Federico Pallottino Luciano Ortenzi Corrado Costa Advantages in Using Colour Calibration for Orthophoto Reconstruction Sensors UAV UGV drones mapping precision agriculture environmental monitoring |
| title | Advantages in Using Colour Calibration for Orthophoto Reconstruction |
| title_full | Advantages in Using Colour Calibration for Orthophoto Reconstruction |
| title_fullStr | Advantages in Using Colour Calibration for Orthophoto Reconstruction |
| title_full_unstemmed | Advantages in Using Colour Calibration for Orthophoto Reconstruction |
| title_short | Advantages in Using Colour Calibration for Orthophoto Reconstruction |
| title_sort | advantages in using colour calibration for orthophoto reconstruction |
| topic | UAV UGV drones mapping precision agriculture environmental monitoring |
| url | https://www.mdpi.com/1424-8220/22/17/6490 |
| work_keys_str_mv | AT francescotocci advantagesinusingcolourcalibrationfororthophotoreconstruction AT simonefigorilli advantagesinusingcolourcalibrationfororthophotoreconstruction AT simonevasta advantagesinusingcolourcalibrationfororthophotoreconstruction AT simonaviolino advantagesinusingcolourcalibrationfororthophotoreconstruction AT federicopallottino advantagesinusingcolourcalibrationfororthophotoreconstruction AT lucianoortenzi advantagesinusingcolourcalibrationfororthophotoreconstruction AT corradocosta advantagesinusingcolourcalibrationfororthophotoreconstruction |