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@article{ColasFat2020,
title = {Fat {{Pad Cages}} for {{Facial Posing}}},
author = {Colas, Adèle and Guiotte, Florent and Danieau, Fabien and Clerc,
François Le and Avril, Quentin},
date = {2020-10-12},
number = {arXiv:2010.05528},
eprint = {2010.05528},
eprinttype = {arxiv},
primaryclass = {cs},
publisher = {{arXiv}},
doi = {10.48550/arXiv.2010.05528},
url = {http://arxiv.org/abs/2010.05528},
urldate = {2023-01-25},
abstract = {We introduce Fat Pad cages for posing facial meshes. It combines
cage representation and facial anatomical elements, and enables
users with no artistic skill to quickly sketch realistic facial
expressions. The model relies on one or several cage(s) that
deform(s) the mesh following the human fat pads map. We propose a
new function to filter Green Coordinates using geodesic distances
preventing global deformation while ensuring smooth deformations at
the borders. Lips, nostrils and eyelids are processed slightly
differently to allow folding up and opening. Cages are
automatically created and fit any new unknown facial mesh. To
validate our approach, we present a user study comparing our Fat
Pad cages to regular Green Coordinates. Results show that Fat Pad
cages bring a significant improvement in reproducing existing
facial expressions.},
archiveprefix = {arXiv},
keywords = {mine},
file = {/home/florent/.zotero/data/storage/EKVVUHR9/Colas et al. - 2020 - Fat
Pad Cages for Facial
Posing.pdf;/home/florent/.zotero/data/storage/42TANDRQ/2010.html},
arXiv = {2010.05528},
pdf = {https://arxiv.org/pdf/2010.05528},
shortjournal = {arXiv},
}
@thesis{Guiotte2d2021,
title = {{{2D}}/{{3D}} Discretization of {{Lidar}} Point Clouds: {{Processing}
} with Morphological Hierarchies and Deep Neural Networks},
shorttitle = {{{2D}}/{{3D}} Discretization of {{Lidar}} Point Clouds},
author = {Guiotte, Florent},
date = {2021-01-25},
institution = {{Université Rennes 2}},
location = {{Rennes}},
abstract = {This thesis evaluates the relevance of morphological hierarchies
and deep neural networks for analysing LiDAR data by means of
several discretization strategies. The quantity of data increases
exponentially in coverage and resolution. However, actual datasets
are not yet fully exploited due to the lack of efficient
methodological tools for this specific type of data. Morphological
structures are known to extract reliable multi-scale features while
being extremely computationally efficient. In the mean time, the
tremendous breakthrough of deep learning in computer vision has
shaken up the remote sensing community. To this end we define and
evaluate different discretization strategies of LiDAR data. In a
first part, we re-organise the point clouds into 2D regular grids.
We propose to derive several LiDAR features, trying to extract
complete elevation description and spectral values along with LiDAR
specific information. In a second part we re-organise the point
clouds into 3D regular grids. The regular grids are sufficient to
provide the neighboring context needed for the morphological
hierarchies, and the proposed grids are also adapted to the input
layers of state-of-the-art deep neural networks. The different
methods are systematically validated in remote sensing scenarios.},
bibtex_show = {true},
hal_id = {tel-03385817},
hal_version = {v1},
langid = {english},
pdf = {Guiotte - 2021 - 2D3D discretization of Lidar point clouds Proces.pdf},
keywords = {mine},
file = {/home/florent/.zotero/data/storage/3AUGKHQS/Guiotte - 2021 - 2D3D
discretization of Lidar point clouds
Proces.pdf;/home/florent/.zotero/data/storage/ZBHU3Q2H/Guiotte - 2021 -
2D3D discretization of Lidar point clouds Proces.pdf},
selected = {true},
}
@incollection{GuiotteAttribute2019,
title = {Attribute Filtering of Urban Point Clouds Using Max-Tree on Voxel
Data},
booktitle = {Mathematical Morphology and Its Applications to Signal and Image
Processing},
author = {Guiotte, Florent and Lefèvre, Sébastien and Corpetti, Thomas},
date = {2019-05},
shortjournal = {ISMM},
pages = {391--402},
doi = {10.1007/978-3-030-20867-7\_30},
url = {https://hal.archives-ouvertes.fr/hal-02343890},
abstract = {This paper deals with morphological characterization of
un-structured 3D point clouds issued from LiDAR data. A large
majority of studies first rasterize 3D point clouds onto regular 2D
grids and then use standard 2D image processing tools for
characterizing data. In this paper, we suggest instead to keep the
3D structure as long as possible in the process. To this end, as
raw LiDAR point clouds are unstructured, we first propose some
voxelization strategies and then extract some morphological
features on voxel data. The results obtained with attribute
filtering show the ability of this process to efficiently extract
useful information .},
hal_id = {hal-02343890},
hal_version = {v1},
pdf = {https://hal.archives-ouvertes.fr/hal-02343890/file/ismm2019.pdf},
keywords = {mine},
annotation = {00000},
file = {/home/florent/.zotero/data/storage/M92S96E2/Guiotte et al. - 2019 -
Attribute filtering of urban point clouds using ma.pdf},
}
@article{GuiotteFiltrage2019,
title = {Filtrage et classification de nuage de points sur la base d'attributs
morphologiques},
author = {Guiotte, Florent and Lefèvre, Sébastien and Corpetti, Thomas},
date = {2019},
journaltitle = {Journées francophones des jeunes chercheurs en vision par
ordinateur},
shortjournal = {ORASIS},
pages = {9},
abstract = {Cet article traite de lanalyse de données LiDAR via la
caractérisation morphologique des nuages de points qui en
résultent. Tandis que la majorité de travaux effectuent en premier
lieu une «rasterisation» (transformation du nuage de point en
données 2D structurées en pixels) et utilisent ensuite des outils
danalyse dimages, nous proposons ici de garder le plus longtemps
possible la structure 3D (en y calculant des caractéristiques) et
de structurer les données le plus tard possible. En pratique, une
étape de voxelisation des données brutes est opérée afin dutiliser
des outils mathématiques définis sur des volumes réguliers. Ensuite
, nous utilisons des représentations hiérarchiques pour
caractériser ces voxels. Pour illustrer les intérêts dune telle
approche, plusieurs applications sont proposées, notamment le
débruitage, le filtrage et la classification des nuages de points},
hal_id = {hal-02343933},
langid = {french},
keywords = {mine},
annotation = {00000},
file = {/home/florent/.zotero/data/storage/YVS8PZP6/Guiotte et al. - 2019 -
Filtrage et classification de nuage de points sur .pdf},
}
@article{GuiotteInteractive2020,
title = {Interactive {{Digital Terrain Model Analysis}} in {{Attribute Space}}
},
author = {Guiotte, Florent and Etaix, Geoffroy and Lefèvre, Sébastien and
Corpetti, Thomas},
date = {2020},
journaltitle = {International Archives of the Photogrammetry, Remote Sensing
and Spatial Information Sciences},
shortjournal = {ISPRS},
volume = {XLIII-B2-2020},
pages = {1203--1209},
doi = {10.5194/isprs-archives-XLIII-B2-2020-1203-2020},
url = {
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B2-2020/1203/2020/
},
abstract = {The use of high-resolution digital terrain model derived from
airborne LiDAR system becomes more and more prevalent. Effective
multi-scale structure characterization is of crucial importance for
various domains such as geosciences, archaeology and Earth
observation. This paper deals with structure detection in large
datasets with little or no prior knowledge. In a recent work, we
have demonstrated the relevance of hierarchical representations to
enhance the description of digital elevation models (Guiotte et al.
, 2019). In this paper, we proceed further and use the pattern
spectrum, a multi-scale tool originating from mathematical
morphology, further enhanced by hierarchical representations. The
pattern spectra allow to globally and efficiently compute the
distribution of size and shapes of the objects contained in a
digital elevation model. The tree-based pattern spectra used in
this paper allowed us to analyse and extract features of interest.
We report experiments in a natural environment with two use cases,
related to gold panning and dikes respectively. The process is fast
enough to allow interactive analysis.},
hal_id = {hal-03065475},
keywords = {dtm,mine},
annotation = {0 citations (Crossref) [2021-06-10] 00000},
file = {/home/florent/.zotero/data/storage/CX6TK8BC/Guiotte et al. - 2020 -
Interactive Digital Terrain Model Analysis in Attr.pdf},
}
@inproceedings{GuiotteRasterization2019,
title = {Rasterization Strategies for Airborne {{LiDAR}} Classification Using
Attribute Profiles},
booktitle = {2019 {{Joint Urban Remote Sensing Event}}},
author = {Guiotte, Florent and Lefèvre, Sébastien and Corpetti, Thomas},
date = {2019},
shortjournal = {JURSE},
pages = {1--4},
publisher = {{IEEE}},
doi = {10.1109/JURSE.2019.8808945},
url = {https://hal.archives-ouvertes.fr/hal-02343901/document},
abstract = {This paper evaluates rasterization strategies and the benefit of
hierarchical representations, in particular attribute profiles, to
classify urban scenes issued from multispectral LiDAR acquisitions.
In recent years it has been found that rasterized LiDAR provides a
reliable source of information on its own or for fusion with
multispectral/hyperspectral imagery. However previous works using
attribute profiles on LiDAR rely on elevation data only. Our
approach focuses on several LiDAR features rasterized with
multilevel description to produce precise land cover maps over
urban areas. Our experimental results obtained with LiDAR data from
university of Houston indicate good classification results for
alternative rasters and even more when multilevel image
descriptions are used.},
hal_id = {hal-02343901v2},
keywords = {ISMM,mine},
annotation = {2 citations (Crossref) [2021-06-10] 00000},
file = {/home/florent/.zotero/data/storage/RCPIJU9B/Guiotte et al. -
Rasterization strategies for airborne LiDAR classi.pdf},
}
@article{GuiotteRelation2020,
title = {Relation {{Network}} for {{Full-waveforms LiDAR Classification}}},
author = {Guiotte, Florent and Rao, Mengbin and Lefèvre, Sébastien and Tang,
Ping and Corpetti, Thomas},
date = {2020},
journaltitle = {International Archives of the Photogrammetry, Remote Sensing
and Spatial Information Sciences},
shortjournal = {ISPRS},
volume = {XLIII-B3-2020},
pages = {515--520},
doi = {10.5194/isprs-archives-XLIII-B3-2020-515-2020},
url = {
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B3-2020/515/2020/
},
abstract = {LiDAR data are widely used in various domains related to
geosciences (flow, erosion, rock deformations, etc.), computer
graphics (3D reconstruction) or earth observation (detection of
trees, roads, buildings, etc.). Because of the unstructured nature
of remaining 3D points and because of the cost of acquisition, the
LiDAR data processing is still challenging (few learning data,
difficult spatial neighboring relationships, etc.). In practice,
one can directly analyze the 3D points using feature extraction and
then classify the points via machine learning techniques (Brodu,
Lague, 2012, Niemeyer et al., 2014, Mallet et al., 2011). In
addition, recent neural network developments have allowed precise
point cloud segmentation, especially using the seminal pointnet
network and its extensions (Qi et al., 2017a, Riegler et al.,
2017). Other authors rather prefer to rasterize / voxelize the
point cloud and use more conventional computers vision strategies
to analyze structures (Lodha et al., 2006). In a recent work, we
demonstrated that Digital Elevation Models (DEM) is reductive of
the vertical component complexity describing objects in urban
environments (Guiotte et al., 2020). These results highlighted the
necessity to preserve the 3D structure of the point cloud as long
as possible in the processing. In this paper, we therefore rely on
ortho-waveforms to compute a land cover map. Ortho-waveforms are
directly computed from the waveforms in a regular 3D grid. This
method provides volumes somehow "similar" to hyperspectral data
where each pixel is here associated with one ortho-waveform. Then,
we exploit efficient neural networks adapted to the classification
of hyperspectral data when few samples are available. Our results,
obtained on the 2018 Data Fusion Contest dataset (DFC), demonstrate
the efficiency of the approach.},
hal_id = {hal-03045729},
keywords = {mine},
annotation = {0 citations (Crossref) [2021-06-10] 00000},
file = {/home/florent/.zotero/data/storage/VBX3GYM4/Guiotte et al. - 2020 -
RELATION NETWORK FOR FULL-WAVEFORMS LIDAR CLASSIFI.pdf},
}
@article{GuiotteSemantic2020,
title = {Semantic Segmentation of {{LiDAR}} Points Clouds: {{Rasterisation}}
beyond Digital Elevation Models},
author = {Guiotte, Florent and Pham, Minh-Tan and Dambreville, Romain and
Corpetti, Thomas and Lefèvre, Sébastien},
date = {2020-01},
journaltitle = {IEEE Geoscience and Remote Sensing Letters},
shortjournal = {GRSL},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers}},
doi = {10.1109/LGRS.2019.2958858},
url = {https://hal.archives-ouvertes.fr/hal-02399410},
abstract = {LiDAR point clouds are receiving a growing interest in remote
sensing as they provide rich information to be used independently
or together with optical data sources such as aerial imagery.
However, their non-structured and sparse nature make them difficult
to handle, conversely to raw imagery for which many efficient tools
are available. To overcome this specific nature of LiDAR point
clouds, standard approaches often rely in converting the point
cloud into a digital elevation model, represented as a 2D raster.
Such a raster can then be used similarly as optical images, e.g.
with 2D convolutional neural networks for semantic segmentation. In
this letter, we show that LiDAR point clouds provide more
information than only the DEM, and that considering alternative
rasterization strategies helps to achieve better semantic
segmentation results. We illustrate our findings on the IEEE DFC
2018 dataset.},
hal_id = {hal-02399410},
hal_version = {v1},
pdf = {https://hal.archives-ouvertes.fr/hal-02399410/file/grsl.pdf},
keywords = {deep learning,lidar,mine},
annotation = {0 citations (Crossref) [2021-06-10] 00000},
file = {/home/florent/.zotero/data/storage/FEUUXDVN/Guiotte et al. - 2020 -
Semantic segmentation of łd points clouds Rasteri.pdf},
}
@article{GuiotteStrategies2019,
title = {Stratégies de rastérisation pour la classification de données LiDAR
aéroportées par profils d'attributs morphologiques},
author = {Guiotte, Florent and Lefèvre, Sébastien and Corpetti, Thomas},
date = {2019},
journaltitle = {Colloque GRETSI sur le Traitement du Signal et des Images},
shortjournal = {GRETSI},
pages = {5},
abstract = {Cet article traite de rastérisation par représentations
hiérarchiques (en particulier via les profils d'attributs
mor-phologiques) de nuages de points 3D. Lorsque ces données
proviennent d'appareils LiDAR, il est fréquent de les rastériser
pour fournir une carte d'élévation (exploitée seule ou combinée
avec des images multi-ou hyperspectrales). Bien que certains
travaux utilisent des profils d'attributs sur de telles données
d'élévation, nous mettons ici l'accent sur plusieurs
caractéristiques LiDAR rastérisées (liées aux échos, retours d'onde
, etc.) et sur une description multi-échelle pour produire des
cartes d'occupation du sol précises sur des zones urbaines. Nos
résultats expérimentaux obtenus avec les données LiDAR de
l'université de Houston indiquent de bons résultats de
classification en exploitant nos rasters.},
bibtex_show = {true},
hal_id = {hal-02343958},
langid = {french},
keywords = {lidar,mine},
annotation = {00000},
file = {/home/florent/.zotero/data/storage/BMGP8AJA/Guiotte et al. - 2019 -
Stratégies de rastérisation pour la classification.pdf},
}
@inproceedings{GuiotteVoxelbased2019,
title = {Voxel-Based Attribute Profiles on Lidar Data for Land Cover Mapping},
booktitle = {{{IEEE}} International Geosciences and Remote Sensing Symposium},
author = {Guiotte, Florent and Lefèvre, Sébastien and Corpetti, Thomas},
date = {2019},
shortjournal = {IGARSS},
location = {{Yokohama, Japan}},
doi = {10.1109/IGARSS.2019.8899129},
url = {https://hal.archives-ouvertes.fr/hal-02343963},
abstract = {This paper deals with strategies for LiDAR data analysis. While a
large majority of studies first rasterize 3D point clouds onto
regular 2D grids and then use 2D image processing tools for
characterizing data, our work rather suggests to keep as long as
possible the 3D structure by computing features on 3D data and
rasterize later in the process. By this way, the vertical component
is still taken into account. In practice, a voxelization step of
raw data is performed in order to exploit mathematical tools
defined on regular volumes. More precisely, we focus on attribute
profiles that have been shown to be very efficient features to
characterize remote sensing scenes. They require the computation of
an underlying hierarchical structure (through a Max-Tree).
Experimental results obtained on urban LiDAR data classification
support the performances of this strategy compared with an early
rasterization process.},
hal_id = {hal-02343963},
hal_version = {v1},
keywords = {attribute profiles,land cover mapping,max-tree,mine,multiscale
representation,voxelization},
annotation = {0 citations (Crossref) [2021-06-10] 00000},
file = {/home/florent/.zotero/data/storage/65K47AUD/Guiotte et al. - 2019 -
Voxel-based attribute profiles on LiDAR data for l.pdf},
}
@article{LeLearning2022,
title = {Learning {{Digital Terrain Models From Point Clouds}}: {{ALS2DTM
Dataset}} and {{Rasterization-Based GAN}}},
shorttitle = {Learning {{Digital Terrain Models From Point Clouds}}},
author = {Lê, Hoàng-Ân and Guiotte, Florent and Pham, Minh-Tan and Lefèvre,
Sébastien and Corpetti, Thomas},
date = {2022},
journaltitle = {IEEE Journal of Selected Topics in Applied Earth Observations
and Remote Sensing},
shortjournal = {JSTARS},
volume = {15},
eprint = {2206.03778},
eprinttype = {arxiv},
pages = {4980--4989},
issn = {2151-1535},
doi = {10.1109/JSTARS.2022.3182030},
abstract = {Despite the popularity of deep neural networks in various domains,
the extraction of digital terrain models (DTMs) from airborne laser
scanning (ALS) point clouds is still challenging. This might be due
to the lack of the dedicated large-scale annotated dataset and the
data-structure discrepancy between point clouds and DTMs. To
promote data-driven DTM extraction, this article collects from open
sources a large-scale dataset of ALS point clouds and corresponding
DTMs with various urban, forested, and mountainous scenes. A
baseline method is proposed as the first attempt to train a deep
neural network to extract DTMs directly from ALS point clouds via
rasterization techniques, coined DeepTerRa. Extensive studies with
well-established methods are performed to benchmark the dataset and
analyze the challenges in learning to extract DTM from point
clouds. The experimental results show the interest of the agnostic
data-driven approach, with submetric error level compared to
methods designed for DTM extraction. The data and source code are
available online at https://lhoangan.github.io/deepterra/ for
reproducibility and further similar research.},
archiveprefix = {arXiv},
eventtitle = {{{IEEE Journal}} of {{Selected Topics}} in {{Applied Earth
Observations}} and {{Remote Sensing}}},
hal_id = {hal-03717178},
pdf = {https://arxiv.org/pdf/2206.03778.pdf},
keywords = {deep learning,gan,lidar,mine,rasterization},
annotation = {00001},
file = {/home/florent/.zotero/data/storage/V7CAY453/Lê et al. - 2022 -
Learning Digital Terrain Models From Point
Clouds.pdf;/home/florent/.zotero/data/storage/BDA5G3YP/9794452.html},
}
@article{MaiaClassification2021,
title = {Classification of {{Remote Sensing Data With Morphological Attribute
Profiles}}: {{A}} Decade of Advances},
shorttitle = {Classification of {{Remote Sensing Data With Morphological
Attribute Profiles}}},
author = {Maia, Deise Santana and Pham, Minh-Tan and Aptoula, Erchan and
Guiotte, Florent and Lefèvre, Sébastien},
date = {2021-09},
journaltitle = {IEEE Geoscience and Remote Sensing Magazine},
shortjournal = {GRSM},
volume = {9},
number = {3},
pages = {43--71},
issn = {2168-6831},
doi = {10.1109/MGRS.2021.3051859},
abstract = {Morphological attribute profiles (APs) are among the most
prominent methods for spatialspectral pixel analysis of remote
sensing images. Since their introduction a decade ago to tackle
land cover classification, many studies have been contributed to
the state of the art, focusing not only on their application to a
wider range of tasks but also on their performance improvement and
extension to more complex Earth observation data.},
eventtitle = {{{IEEE Geoscience}} and {{Remote Sensing Magazine}}},
hal_id = {hal-03199357},
pdf = {https://hal.science/hal-03199357v1/document},
keywords = {attribute profiles,mine},
annotation = {00010},
file = {/home/florent/.zotero/data/storage/6WDRKG9L/Maia et al. - 2021 -
Classification of Remote Sensing Data With
Morphol.pdf;/home/florent/.zotero/data/storage/ZHLN4422/Maia et al. -
2021 - Classification of Remote Sensing Data With
Morphol.pdf;/home/florent/.zotero/data/storage/YASAD9GI/9366293.html},
}