Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry

The aim of this study is to evaluate the degradation of the accuracy and quality of the images in relation to the TIFF format and the different compression level of the JPEG format compared to the raw images acquired by UAV platform. Experiments were carried out using DJI Mavic 2 Pro and Hasselblad...

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Main Authors: Vincenzo Saverio Alfio, Domenica Costantino, Massimiliano Pepe
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Journal of Imaging
Subjects:
Online Access:https://www.mdpi.com/2313-433X/6/5/30
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author Vincenzo Saverio Alfio
Domenica Costantino
Massimiliano Pepe
author_facet Vincenzo Saverio Alfio
Domenica Costantino
Massimiliano Pepe
author_sort Vincenzo Saverio Alfio
collection DOAJ
description The aim of this study is to evaluate the degradation of the accuracy and quality of the images in relation to the TIFF format and the different compression level of the JPEG format compared to the raw images acquired by UAV platform. Experiments were carried out using DJI Mavic 2 Pro and Hasselblad L1D-20c camera on three test sites. Post-processing of images was performed using software based on structure from motion and multi-view stereo approaches. The results show a slight influence of image format and compression levels in flat or slightly flat surfaces; in the case of a complex 3D model, instead, the choice of a format became important. Across all tests, processing times were found to also play a key role, especially in point cloud generation. The qualitative and quantitative analysis, carried out on the different orthophotos, allowed to highlight a modest impact in the use of the TIFF format and a strong influence as the JPEG compression level increases.
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spelling doaj.art-354f0ba2e94e4dd59b256a9e4c84cf342023-11-20T00:06:36ZengMDPI AGJournal of Imaging2313-433X2020-05-01653010.3390/jimaging6050030Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV PhotogrammetryVincenzo Saverio Alfio0Domenica Costantino1Massimiliano Pepe2Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica, Polytechnic of Bari, via E. Orabona 4, 70125 Bari, ItalyDipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica, Polytechnic of Bari, via E. Orabona 4, 70125 Bari, ItalyDipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica, Polytechnic of Bari, via E. Orabona 4, 70125 Bari, ItalyThe aim of this study is to evaluate the degradation of the accuracy and quality of the images in relation to the TIFF format and the different compression level of the JPEG format compared to the raw images acquired by UAV platform. Experiments were carried out using DJI Mavic 2 Pro and Hasselblad L1D-20c camera on three test sites. Post-processing of images was performed using software based on structure from motion and multi-view stereo approaches. The results show a slight influence of image format and compression levels in flat or slightly flat surfaces; in the case of a complex 3D model, instead, the choice of a format became important. Across all tests, processing times were found to also play a key role, especially in point cloud generation. The qualitative and quantitative analysis, carried out on the different orthophotos, allowed to highlight a modest impact in the use of the TIFF format and a strong influence as the JPEG compression level increases.https://www.mdpi.com/2313-433X/6/5/30UAVcompressionpoint cloudphotogrammetryorthophotoSfM software
spellingShingle Vincenzo Saverio Alfio
Domenica Costantino
Massimiliano Pepe
Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry
Journal of Imaging
UAV
compression
point cloud
photogrammetry
orthophoto
SfM software
title Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry
title_full Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry
title_fullStr Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry
title_full_unstemmed Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry
title_short Influence of Image TIFF Format and JPEG Compression Level in the Accuracy of the 3D Model and Quality of the Orthophoto in UAV Photogrammetry
title_sort influence of image tiff format and jpeg compression level in the accuracy of the 3d model and quality of the orthophoto in uav photogrammetry
topic UAV
compression
point cloud
photogrammetry
orthophoto
SfM software
url https://www.mdpi.com/2313-433X/6/5/30
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