Semantic Segmentation with Neural Networks in Environment Monitoring

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http://urn.fi/URN:NBN:fi:hulib-202009294151
Title: Semantic Segmentation with Neural Networks in Environment Monitoring
Author: Elmnäinen, Johannes
Contributor: University of Helsinki, Faculty of Science
Publisher: Helsingin yliopisto
Date: 2020
Language: eng
URI: http://urn.fi/URN:NBN:fi:hulib-202009294151
http://hdl.handle.net/10138/319778
Thesis level: master's thesis
Degree program: Datatieteen maisteriohjelma
Master's Programme in Data Science
Magisterprogrammet i data science
Specialisation: ei opintosuuntaa
no specialization
ingen studieinriktning
Discipline: none
Abstract: The Finnish Environment Institute (SYKE) has at least two missions which require surveying large land areas: finding invasive alien species and monitoring the state of Finnish lakes. Various methods to accomplish these tasks exist, but they traditionally rely on manual labor by experts or citizen activism, and as such do not scale well. This thesis explores the usage of computer vision to dramatically improve the scaling of these tasks. Specifically, the aim is to fly a drone over selected areas and use a convolutional neural network architecture (U-net) to create segmentations of the images. The method performs well on select biomass estimation task classes due to large enough datasets and easy-to-distinguish core features of the classes. Furthermore, a qualitative study of datasets was performed, yielding an estimate for a lower bound of number of examples for an useful dataset. ACM Computing Classification System (CCS): CCS → Computing methodologies → Machine learning → Machine learning approaches → Neural networks
Subject: lake biomass estimation
invasive alien species
neural networks
semantic segmentation
U-net


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