Search Results for author: Simon Watson

Found 6 papers, 1 papers with code

Deep Learning-based Aerial Image Segmentation with Open Data for Disaster Impact Assessment

no code implementations10 Jun 2020 Ananya Gupta, Simon Watson, Hujun Yin

Experimental results show that pretraining on ImageNet usually improves the segmentation performance for a number of models.

Disaster Response Image Segmentation +3

CNN-Based Semantic Change Detection in Satellite Imagery

no code implementations10 Jun 2020 Ananya Gupta, Elisabeth Welburn, Simon Watson, Hujun Yin

Graph theory is combined with the CNN output for detecting semantic changes in road networks with OpenStreetMap data.

Change Detection Management +1

3D Point Cloud Feature Explanations Using Gradient-Based Methods

no code implementations9 Jun 2020 Ananya Gupta, Simon Watson, Hujun Yin

Driven by the insight that 3D data is inherently sparse, we visualise the features learnt by a voxel-based classification network and show that these features are also sparse and can be pruned relatively easily, leading to more efficient neural networks.

Tree Annotations in LiDAR Data Using Point Densities and Convolutional Neural Networks

no code implementations9 Jun 2020 Ananya Gupta, Jonathan Byrne, David Moloney, Simon Watson, Hujun Yin

The third method is a scaled version of the PointNet++ method and works directly on outdoor point clouds and achieves an F_score of 82. 1% on the ISPRS benchmark dataset, comparable to the state-of-the-art methods but with increased efficiency.

Multi-Temporal Aerial Image Registration Using Semantic Features

no code implementations30 Aug 2019 Ananya Gupta, Yao Peng, Simon Watson, Hujun Yin

A semantic feature extraction method for multitemporal high resolution aerial image registration is proposed in this paper.

Image Registration Semantic Segmentation

Airborne Wind Energy Resource Analysis

2 code implementations23 Aug 2018 Philip Bechtle, Mark Schelbergen, Roland Schmehl, Udo Zillmann, Simon Watson

Over the land mass and coastal areas of Europe we find that compared to a fixed harvesting altitude at the approximate hub height of wind turbines, the energy yield which is available for 95% of the time increases by a factor of two.

Atmospheric and Oceanic Physics

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