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UAS4Enviro2017 Invited Speaker: Prof. José Alberto Gonçalves
Prof. José Alberto Gonçalves is a surveying Engineer with a special interest in data science and photogrammetry and works at The University of Porto (Portugal).
Title: New challenges in the aquisition and processing of photogrammetric data
UAS4Enviro2017 Invited Speaker: Prof. Marc Pierrot Deseilligny
Prof. Marc Pierrot Deseilligny is Professor at the French school of Geomatics, the École Nationale des Sciences Géographiques (ENSG) which is part of the French National Institute of Geographic and Forest Information (IGN). Senior researcher at the “Laboratoire en Sciences et Technologies de l'Information Géographique” (LaSTIG), IGN, connected to the LOEMI and MATIS teams, leader of a 5 researcher photogrammetric team.
Title: UAV 3D photogrammetric models: bigger and faster forever, is this the Graal?
The last decade encountered a revolution in photogrammetry and it is now common to process (almost) fully automatically acquisitions composed of more than a thousand images. In the context of “big data” and “high performance computing”, the dominant tendency is to continuously push the limits by processing more and more data in less and less amount of time : “bigger and faster forever”. Even if there are applications having the real need for this high performance, it is a pity that the evolution has been done while forgetting the fundamental aspects of photogrammetry: the accuracy, precision and quality checking, all three so essential in many contexts.
In this talk, after revisiting the modern photogrammetric pipeline, I will address the question of accuracy and quality checking in image-based 3D modelling, concentrating on the following points:
- what are the different quality criteria of a 3D model (resolution, planimetric and altimetric precision, …);
- how to plan and execute a photogrammetric survey to enhance the quality of the output 3D model;
- what are the possible means of checking a 3D model’s quality; which of these methods are available in the state—of-the-art photogrammetric tools, with a special focus on MicMac – the free open-source software solution developed at IGN/ENSG, France;
- description of future research perspectives to enhance the quality of 3D models produced by photogrammetry.
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21 February 2017, Oxford (UK)
23-24 May 2017, London (UK)
15-16 November 2017, London (UK)
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