352 research outputs found
Autonomous crater detection on asteroids using a fully-convolutional neural network
This paper shows the application of autonomous Crater Detection using the
U-Net, a Fully-Convolutional Neural Network, on Ceres. The U-Net is trained on
optical images of the Moon Global Morphology Mosaic based on data collected by
the LRO and manual crater catalogues. The Moon-trained network will be tested
on Dawn optical images of Ceres: this task is accomplished by means of a
Transfer Learning (TL) approach. The trained model has been fine-tuned using
100, 500 and 1000 additional images of Ceres. The test performance was measured
on 350 never before seen images, reaching a testing accuracy of 96.24%, 96.95%
and 97.19%, respectively. This means that despite the intrinsic differences
between the Moon and Ceres, TL works with encouraging results. The output of
the U-Net contains predicted craters: it will be post-processed applying global
thresholding for image binarization and a template matching algorithm to
extract craters positions and radii in the pixel space. Post-processed craters
will be counted and compared to the ground truth data in order to compute image
segmentation metrics: precision, recall and F1 score. These indices will be
computed, and their effect will be discussed for tasks such as automated crater
cataloguing and optical navigation
Deep learning methods applied to digital elevation models: state of the art
Deep Learning (DL) has a wide variety of applications in various
thematic domains, including spatial information. Although with
limitations, it is also starting to be considered in operations
related to Digital Elevation Models (DEMs). This study aims to
review the methods of DL applied in the field of altimetric spatial
information in general, and DEMs in particular. Void Filling (VF),
Super-Resolution (SR), landform classification and hydrography
extraction are just some of the operations where traditional methods
are being replaced by DL methods. Our review concludes
that although these methods have great potential, there are
aspects that need to be improved. More appropriate terrain information
or algorithm parameterisation are some of the challenges
that this methodology still needs to face.Functional Quality of Digital Elevation Models in Engineering’ of the State Agency Research of SpainPID2019-106195RB- I00/AEI/10.13039/50110001103
Deep Domain Adaptation for Detecting Bomb Craters in Aerial Images
The aftermath of air raids can still be seen for decades after the devastating events. Unexploded ordnance (UXO) is an immense danger to human life and the environment. Through the assessment of wartime images, experts can infer the occurrence of a dud. The current manual analysis process is expensive and time-consuming, thus automated detection of bomb craters by using deep learning is a promising way to improve the UXO disposal process. However, these methods require a large amount of manually labeled training data. This work leverages domain adaptation with moon surface images to address the problem of automated bomb crater detection with deep learning under the constraint of limited training data. This paper contributes to both academia and practice (1) by providing a solution approach for automated bomb crater detection with limited training data and (2) by demonstrating the usability and associated challenges of using synthetic images for domain adaptation
Deep Domain Adaptation for Detecting Bomb Craters in Aerial Images
The aftermath of air raids can still be seen for decades after the
devastating events. Unexploded ordnance (UXO) is an immense danger to human
life and the environment. Through the assessment of wartime images, experts can
infer the occurrence of a dud. The current manual analysis process is expensive
and time-consuming, thus automated detection of bomb craters by using deep
learning is a promising way to improve the UXO disposal process. However, these
methods require a large amount of manually labeled training data. This work
leverages domain adaptation with moon surface images to address the problem of
automated bomb crater detection with deep learning under the constraint of
limited training data. This paper contributes to both academia and practice (1)
by providing a solution approach for automated bomb crater detection with
limited training data and (2) by demonstrating the usability and associated
challenges of using synthetic images for domain adaptation.Comment: 56th Annual Hawaii International Conference on System Sciences
(HICSS-56
A flexible deep learning crater detection scheme using Segment Anything Model (SAM)
Peer reviewedPublisher PD
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