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Publications de 2006
Résultat de la recherche dans la liste des publications :
15 Articles de conférence |
12 - A study of Gaussian approximations of fluorescence microscopy PSF models.
B. Zhang et J. Zerubia et J.C. Olivo-Marin. Dans Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XIII of Proc. SPIE, in press, Vol. 6090, San Jose, USA, janvier 2006.
Copyright : SPIE
@INPROCEEDINGS{zerubia_spie06,
|
| author |
= |
{Zhang, B. and Zerubia, J. and Olivo-Marin, J.C.}, |
| title |
= |
{A study of Gaussian approximations of fluorescence microscopy PSF models}, |
| year |
= |
{2006}, |
| month |
= |
{janvier}, |
| booktitle |
= |
{Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XIII of Proc. SPIE, in press}, |
| volume |
= |
{6090}, |
| address |
= |
{San Jose, USA}, |
| keyword |
= |
{} |
| } |
|
13 - Evaluation des Ressources Forestières à l'aide de Processus Ponctuels Marqués.
G. Perrin et X. Descombes et J. Zerubia. Dans Proc. Reconnaissance des Formes et Intelligence Artificielle (RFIA), Tours, France, janvier 2006.
Mots-clés : Extraction de Houppiers, Geometrie stochastique, Processus ponctuels marques, Extraction d'objets.
@INPROCEEDINGS{perrin_06_a,
|
| author |
= |
{Perrin, G. and Descombes, X. and Zerubia, J.}, |
| title |
= |
{Evaluation des Ressources Forestières à l'aide de Processus Ponctuels Marqués}, |
| year |
= |
{2006}, |
| month |
= |
{janvier}, |
| booktitle |
= |
{Proc. Reconnaissance des Formes et Intelligence Artificielle (RFIA)}, |
| address |
= |
{Tours, France}, |
| pdf |
= |
{ftp://ftp-sop.inria.fr/ariana/Articles/perrin_rfia06.pdf}, |
| keyword |
= |
{Extraction de Houppiers, Geometrie stochastique, Processus ponctuels marques, Extraction d'objets} |
| } |
Résumé :
Les images aériennes et satellitaires jouent un role de plus en plus important dans le domaine de la gestion des ressources naturelles, et en particulier des forêts. Les organismes chargés d'en faire l'inventaire, comme l'Inventaire Forestier National (IFN) en France, s'appuient en effet sur ces images pour observer les différentes espèces d'arbres d'une zone boisée, avant de se rendre sur le terrain pour une étude plus poussée. La résolution submétrique des données permet, en outre, d'entrevoir une étude plus fine, à savoir un comptage à l'arbre près et une classification automatique des houppiers (ensemble des branches et du feuillage d'un arbre). Cette évaluation précise des ressources forestières n'est actuellement pas disponible. Aussi, le développement d'outils automatiques, chargés d'aider les gestionnaires du paysage dans leur travail en leur apportant une connaissance des ressources à l'échelle de l'arbre, se révèle-t-il être d'un intérêt grandissant.L'objectif de notre travail est donc d'extraire des houppiers à partir d'images aériennes de forêts à très haute résolution. Notre approche consiste à modéliser les peuplements forestiers par un processus ponctuel marqué d'ellipses, dont les points représentent les positions des arbres et les marques leurs caractéristiques géométriques. La densité de ce processus comporte une composante de régularisation, dite a priori, qui introduit des interactions entre les objets du processus, ainsi qu'une composante d'attache aux données, afin que les objets du processus se positionnent sur les houppiers que l'on souhaite extraire. Il s'agit de trouver la configuration d'objets, en nombre inconnu a priori, qui maximise cette densité. La simulation de tels processus fait appel aux algorithmes de type Monte Carlo par Chaîne de Markov (MCMC) à sauts réversibles, l'optimisation étant réalisée à l'aide d'un recuit simulé.Nous présentons ici un nouveau modèle d'attache aux données. Contrairement à nos précédents modèles testés sur des plantations, ce modèle n'est plus bayésien puisque le terme d'attache aux données est désormais calculé au niveau des objets et non de l'image. Ceci nous permet de travailler sur des images plus générales, avec des densités d'arbres plus variables. Des résultats obtenus sur des images fournies par l'IFN valident ce modèle. |
Abstract :
Aerial and satellite imagery has a key role to play in natural resources management, especially in forestry application. Indeed, forest inventories, such as the French National Inventory (IFN), refer to these images to analyse the different tree species in a stand, before sending a team on the ground to obtain some more advanced knowledge. Moreover, the submetric resolution of the data enables to study forests at the scale of trees, and also to get a more accurate evaluation of the resources such as the number of stems. It would be also of important economical and environmental concerns to develop automatic tools to analyze and monitor forests.We aim at extracting tree crowns from high resolution aerial images of forests. Our approach consists in modelling the forestry images as realizations of a marked point process of ellipses, whose points are the positions of the trees and marks their geometric features. The density of this process embeds a regularization term (prior density), which introduces some interactions between the objects, and a data term, which links the objects to the features to be extracted. Our goal is to find the best configuration of an unknown number of objects, i.e. the configuration that maximizes this density. To sample the marked point process, we use Monte Carlo dynamics (Reversible Jump Markov Chain Monte Carlo), while the optimization is performed via a simulated annealing algorithm.We present here a new model for the data term. Contrary to our previous models tested on plantations images, this model is not Bayesian anymore : the data term is calculated for each object and not for the whole image. This enables us to work on more general images, with variable tree crown densities. Example results are shown on aerial images provided by the French Forest Inventory (IFN). |
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14 - Galaxy filament detection using the Quality candy model.
P. Gernez et X. Descombes et J. Zerubia et E. Slezak et A. Bijaoui. Dans Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2006.
Mots-clés : Processus ponctuels marques, Quality Candy model, Galaxy Filaments.
@INPROCEEDINGS{gernez06,
|
| author |
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{Gernez, P. and Descombes, X. and Zerubia, J. and Slezak, E. and Bijaoui, A.}, |
| title |
= |
{Galaxy filament detection using the Quality candy model}, |
| year |
= |
{2006}, |
| booktitle |
= |
{Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, |
| pdf |
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{ftp://ftp-sop.inria.fr/ariana/Articles/2006_gernez06.pdf}, |
| keyword |
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{Processus ponctuels marques, Quality Candy model, Galaxy Filaments} |
| } |
|
15 - Point process of segments and rectangles for building extraction from DEM.
M. Ortner et X. Descombes et J. Zerubia. Dans Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2006.
Mots-clés : Geometrie stochastique, Batiments.
@INPROCEEDINGS{ortner06,
|
| author |
= |
{Ortner, M. and Descombes, X. and Zerubia, J.}, |
| title |
= |
{Point process of segments and rectangles for building extraction from DEM}, |
| year |
= |
{2006}, |
| booktitle |
= |
{Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, |
| pdf |
= |
{ftp://ftp-sop.inria.fr/ariana/Articles/2006_ortner06.pdf}, |
| keyword |
= |
{Geometrie stochastique, Batiments} |
| } |
|
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7 Rapports de recherche et Rapports techniques |
1 - Hierarchical finite-state modeling for texture segmentation with application to forest classification.
G. Scarpa et M. Haindl et J. Zerubia. Research Report 6066, INRIA, INRIA, France, décembre 2006.
Mots-clés : Texture, Segmentation, Co-occurrence matrix, Approche structurelle, MCMC, Synthesis.
@TECHREPORT{scarparr06,
|
| author |
= |
{Scarpa, G. and Haindl, M. and Zerubia, J.}, |
| title |
= |
{Hierarchical finite-state modeling for texture segmentation with application to forest classification}, |
| year |
= |
{2006}, |
| month |
= |
{décembre}, |
| institution |
= |
{INRIA}, |
| type |
= |
{Research Report}, |
| number |
= |
{6066}, |
| address |
= |
{INRIA, France}, |
| url |
= |
{https://hal.inria.fr/inria-00118420}, |
| keyword |
= |
{Texture, Segmentation, Co-occurrence matrix, Approche structurelle, MCMC, Synthesis} |
| } |
Abstract :
In this research report we present a new model for texture representation which is particularly well suited for image analysis and segmentation. Any image is first discretized and then a hierarchical finite-state region-based model is automatically coupled with the data by means of a sequential optimization scheme, namely the Texture Fragmentation and Reconstruction (TFR) algorithm. The TFR algorithm allows to model both intra- and inter-texture interactions, and eventually addresses the segmentation task in a completely unsupervised manner. Moreover, it provides a hierarchical output, as the user may decide the scale at which the segmentation has to be given. Tests were carried out on both natural texture mosaics provided by the Prague Texture Segmentation Datagenerator Benchmark and remote-sensing data of forest areas provided by the French National Forest Inventory (IFN). |
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2 - A higher-order active contour model of a `gas of circles' and its application to tree crown extraction.
P. Horvath et I. H. Jermyn et Z. Kato et J. Zerubia. Research Report 6026, INRIA, France, novembre 2006.
Mots-clés : Extraction de Houppiers, Aerial images, Ordre superieur, Contour actif, Gaz de cercles, Forme.
@TECHREPORT{Horvath05,
|
| author |
= |
{Horvath, P. and Jermyn, I. H. and Kato, Z. and Zerubia, J.}, |
| title |
= |
{A higher-order active contour model of a `gas of circles' and its application to tree crown extraction}, |
| year |
= |
{2006}, |
| month |
= |
{novembre}, |
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{INRIA}, |
| type |
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{Research Report}, |
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{6026}, |
| address |
= |
{France}, |
| url |
= |
{http://hal.inria.fr/inria-00115631}, |
| pdf |
= |
{ftp://ftp-sop.inria.fr/ariana/Articles/2006_Horvath05.pdf}, |
| keyword |
= |
{Extraction de Houppiers, Aerial images, Ordre superieur, Contour actif, Gaz de cercles, Forme} |
| } |
Abstract :
Many image processing problems involve identifying the region in the image domain occupied by a given entity in the scene. Automatic solution of these problems requires models that incorporate significant prior knowledge about the shape of the region. Many methods for including such knowledge run into difficulties when the topology of the region is unknown a priori, for example when the entity is composed of an unknown number of similar objects. Higher-order active contours (HOACs) represent one method for the modelling of non-trivial prior knowledge about shape without necessarily constraining region topology, via the inclusion of non-local interactions between region boundary points in the energy defining the model. The case of an unknown number of circular objects arises in a number of domains, \eg medical, biological, nanotechnological, and remote sensing imagery. Regions composed of an a priori unknown number of circles may be referred to as a `gas of circles'. In this report, we present a HOAC model of a `gas of circles'. In order to guarantee stable circles, we conduct a stability analysis via a functional Taylor expansion of the HOAC energy around a circular shape. This analysis fixes one of the model parameters in terms of the others and constrains the rest. In conjunction with a suitable likelihood energy, we apply the model to the extraction of tree crowns from aerial imagery, and show that the new model outperforms other techniques. |
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3 - A structural approach for 3D building reconstruction.
F. Lafarge et X. Descombes et J. Zerubia et M. Pierrot-Deseilligny. Research Report 6048, INRIA, novembre 2006.
Mots-clés : Reconstruction en 3D, Approche structurelle, Building, RJMCMC, Viterbi.
@TECHREPORT{Lafarge_rr_6048,
|
| author |
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{Lafarge, F. and Descombes, X. and Zerubia, J. and Pierrot-Deseilligny, M.}, |
| title |
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{A structural approach for 3D building reconstruction}, |
| year |
= |
{2006}, |
| month |
= |
{novembre}, |
| institution |
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{INRIA}, |
| type |
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{Research Report}, |
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{6048}, |
| url |
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{https://hal.inria.fr/inria-00114338}, |
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{ftp://ftp-sop.inria.fr/ariana/Articles/2006_Lafarge_rr_6048.pdf}, |
| keyword |
= |
{Reconstruction en 3D, Approche structurelle, Building, RJMCMC, Viterbi} |
| } |
|
4 - Tree Crown Extraction using a Three States Markov Random Field.
X. Descombes et E. Pechersky. Research Report 5982, INRIA, septembre 2006.
Mots-clés : Champs de Markov, Extraction de Houppiers.
@TECHREPORT{Descombes-Pechersky,
|
| author |
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{Descombes, X. and Pechersky, E.}, |
| title |
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{Tree Crown Extraction using a Three States Markov Random Field}, |
| year |
= |
{2006}, |
| month |
= |
{septembre}, |
| institution |
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{INRIA}, |
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{Research Report}, |
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{ftp://ftp-sop.inria.fr/ariana/Articles/2006_Descombes-Pechersky.pdf}, |
| keyword |
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{Champs de Markov, Extraction de Houppiers} |
| } |
|
5 - Some applications of L infinite norms in image processing.
P. Weiss et G. Aubert et L. Blanc-Féraud. Rapport de Recherche 6115, INRIA, septembre 2006.
Mots-clés : projected subgradient descent, convergence rate, Variation totale, compression bounded noise, meyer G norm, fast l1 minimization.
@TECHREPORT{Some applications of L infinite constraints,
|
| author |
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{Weiss, P. and Aubert, G. and Blanc-Féraud, L.}, |
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{Some applications of L infinite norms in image processing}, |
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{2006}, |
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{ftp://ftp-sop.inria.fr/ariana/Articles/2006_Some applications of L infinite constraints.pdf}, |
| keyword |
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{projected subgradient descent, convergence rate, Variation totale, compression bounded noise, meyer G norm, fast l1 minimization} |
| } |
|
6 - An automatic building extraction method : Application to the 3D-city modeling.
F. Lafarge et P. Trontin et X. Descombes et J. Zerubia et M. Pierrot-Deseilligny. Research Report 5925, INRIA, France, mai 2006.
Mots-clés : Extraction d'objets, Processus ponctuels marques, Reconstruction en 3D, Zones urbaines, Imagerie satellitaire, Modele numerique d'elevation (MNE).
@TECHREPORT{lafarge_rr_may06,
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{Lafarge, F. and Trontin, P. and Descombes, X. and Zerubia, J. and Pierrot-Deseilligny, M.}, |
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{An automatic building extraction method : Application to the 3D-city modeling}, |
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{Extraction d'objets, Processus ponctuels marques, Reconstruction en 3D, Zones urbaines, Imagerie satellitaire, Modele numerique d'elevation (MNE)} |
| } |
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