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AUTOMATIC ANNOTATION OF 3D POINT CLOUDS FROM
2D IMAGES
A Degree Thesis
Submitted to the Faculty of the
Escola Tècnica d'Enginyeria de Telecomunicació deBarcelona
Universitat Politècnica de Catalunya
byPablo Hernández Lázaro
In partial fulfilment
of the requirements for the degree inAUDIOVISUAL SYSTEMS ENGINEERING
Advisor: Javier Ruiz Hidalgo
Barcelona, October 2018
1 Generation and processing of 3D models for real life objects is playing a major role for y to success. There has also been a tremendous progress in the field of machine learning on increasing the accuracy for 2D image object recognition. In this context, the project aims to expand and further investigate the capabilities of 3D models, and be able to extrapolate previously generated label information from 2D sources to the 3D space without human interaction. 2 La generación y procesado de modelos 3D para objetos de la vida real está jugando un importante papel en la actuales aplicaciones de visión por computación. Desde coches autónomos hasta drones de reconocimiento, pasando por Realidad Aumentada; la habilidad para entender y modelar lo que nos rodea está siendo la clave para el éxito. También ha habido un enorme progreso en el campo del machine learning alcanzando cotas cada vez más precisas en referencia al reconocimiento de objetos en imágenes 2D. En este contexto, este proyecto quiere expandir e investigar las posibilidades de los modelos 3D, y ser capaz de extrapolar etiquetas previamente generadas desde fuentes2D al espacio tridimensional sin la interacción humana.
3 La generació i processament de models tridimensionals de la vida real està tenint un molt abilitat per També hi ha hagut un important progrés en el camp de machine learning, arribant a altes És en aquest context que aquest projecte vol engrandir I investigar les possibilitats dels 4 helpful guidance through the whole duration of the project. I am also thankful for the access granted to the Fuji dataset, acquired by Grup de Recerca en Agròtica i Agricultura de Precisió, Departament d'enginyeria agroforestal, Universitat de Lleida whithin the AgVANCE (AGL2013-48297-C2-2-R) project with the support of theMinistry of Economy and Competitiveness.
5Revision Date Purpose
0 21/09/2018 Document creation
1 01/10/2018 Document revision
2 08/10/2018 Document revision
DOCUMENT DISTRIBUTION LIST
Name e-mail
Pablo Hernández Lázaro herlazp@gmail.com
Javier Ruiz Hidalgo j.ruiz@upc.edu
Written by: Reviewed and approved by:
Date 08/10/2018 Date 01/10/2018
Name Pablo Hernández Lázaro Name Javier Ruiz Hidalgo Position Project Author Position Project Supervisor 6Abstract ................................................................................................................................. 1
Resumen .............................................................................................................................. 2
Resum .................................................................................................................................. 3
Acknowledgements .............................................................................................................. 4
Revision history and approval record................................................................................... 5
Table of contents .................................................................................................................. 6
List of Figures ....................................................................................................................... 8
List of Tables: ....................................................................................................................... 9
1. Introduction.................................................................................................................. 10
1.1. Statement of purpose .......................................................................................... 10
1.2. Requirements and specifications ........................................................................ 10
1.3. Project Background ............................................................................................. 11
1.4. Work plan with tasks and a Gantt diagram ......................................................... 11
1.4.1. Gantt diagram ............................................................................................... 12
1.5. Incidences ............................................................................................................ 13
2. State of the art of the technology used or applied in this thesis: ............................... 14
2.1. Fundamentals ...................................................................................................... 14
2.1.1. 3D Reconstruction from 2D .......................................................................... 14
2.1.1.1. Structure from Motion................................................................................. 15
2.2. Software solutions ............................................................................................... 17
2.2.1. 3D reconstruction from 2D ........................................................................... 17
2.2.2. Labelling ....................................................................................................... 18
2.2.2.1. 3D Annotation tools .................................................................................... 18
3. Methodology / project development: ........................................................................... 19
3.1. Datasets ............................................................................................................... 19
3.1.1. Fuji ................................................................................................................ 19
3.1.2. Truck ............................................................................................................. 20
3.2. Colmap Pipeline ................................................................................................... 21
3.2.1. Correspondence Search. ............................................................................. 21
3.2.2. Incremental reconstruction ........................................................................... 21
3.3. Metadata reconstruction pipeline ........................................................................ 24
3.3.1. Colmap reconstruction ................................................................................. 25
73.3.2. Access and parse reconstruction data ......................................................... 26
3.3.3. Overwrite 3D Point with new information ..................................................... 27
3.3.4. Prepare data for general system .................................................................. 27
3.3.5. Enriched reconstruction................................................................................ 28
4. Results ........................................................................................................................ 29
5. Budget ......................................................................................................................... 32
6. Conclusions and future development: ........................................................................ 33
6.1. Future development ............................................................................................. 33
Bibliography: ....................................................................................................................... 35
Appendices (optional):........................................................................................................ 35
Glossary.............................................................................................................................. 36
8 Figure 1. 2D annotation [22] (left) vs 3D annotation [23] (right) [pg.12]