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The research group is affiliated to the University of Lausanne and mostly supported by Swiss National Science Foundation (SNSF), with also grants from the National Centre for Groundwater Research and Training (NCGRT), and the National ICT Australia (NICTA)

 

·         Gregoire Mariethoz (Professor Assistant, UNIL)

·         Lionel Benoit (PhD Candidate, UNIL) – Rainfall measurement and stochastic space-time simulation/interpolation.

·         Mathieu Gravey (PhD Candidate, UNIL) – GPU-based topography point clouds completion methods, remote sensing images colorization.

·         Luiz Gustavo Rasera (PhD Candidate, UNIL) – geostatistical topography downscaling and data fusion.

·         Inigo Irarrazaval (PhD Candidate, UNIL) – Subglacial channels modeling with inverse methods.

·         Elisa Giaccone (PhD Candidate, UNIL, main supervisor: Christophe Lambiel, part of the Integralp project) – Interactions geomorphology/plants/permafrost in alpine environments.

·         James Thornton (PhD Candidate, University of Neuchatel, main supervisor: Philip Brunner, part of the Integralp project) – Hydrological and hydrogeological modeling in alpine environments.

·         Moctar Dembele (PhD Candidate, UNIL, main supervisor: Bettina Schaefli) – Hydrology and remote sensing for water accounting.

·         Qiyu Chen (PhD Candidate, UNIL / China University of Geosciences) - Geological stochastic modeling method for the Quaternary sedimentary system 3D geological stochastic modeling method for Quaternary sedimentary systems.

·         Juan Carlos Castilla (PhD Candidate, UNSW Australia and researcher at CSIRO) – Agents-based models, uncertainty in hydrogeological models, climate change.

 

Former group members

·         Xue Li (former PhD Candidate, UNIL / University of Science and Technology of China) – Development of geostatistical simulation algorithms.

·         Ehsan Baninajar (former PhD Candidate, UNIL / Sahand University of Technology, Iran) – Automatic parameterization of MPS methods.

·         Fabio Oriani (former PhD Candidate, University of Neuchatel, now postdoc at GEUS Copenhagen) – Climatic time-series modeling with Multiple-point geostatistics.

·         Kashif Mahmud (former Former PhD student at UNSW Australia, now postdoc at University of Western Sydney) – Multiple-point geostatistics, texture synthesis, upscaling, multivariate analysis, karst modeling.

·         Sanjeev Jha (former postdoc at UNSW Australia, now Assistant Professor with IIT Bhopal) – Downscaling of hydrological data, 3D geological modeling under structural heterogeneity and variable connectivity, river sedimentary processes and bathymetry.

 

One of our main research areas is related to Multiple-Point Statistics, and here is a list of references related to MPS

Please check out the book that will tell you everything you always wanted to know about MPS, which is published with Wiley.

 

Below is a (incomplete and not up-to-date) list of some recent and less recent research topics. For a more complete list, please refer to the publications page where links to journal articles are available, except the very recent ones for which there may be an embargo period. You can also send me an email if you need a specific paper (please no researchgate or linkedin messages).

 

Ongoing projects

·         Downscaling of digital elevation models

·         Stochastic models for super-small-scale rainfall generation

·         Colorization of multispectral remote sensing images

·         Analogue-based fusion of different satellite products

·         Inverse modeling of subglacial networks

·         Fundamental development of geostatistical algorithms (without preconceptions: working on both training image-based and covariance-based models)

·         Environmental data acquisition with innovative low-cost sensors – we want to know where the data we model are coming from!

·         Application of the above to real-world questions, mostly in the context of environmental change in alpine regions

 

 

Published stuff

 

Rainfall simulation with multiple-point geostatistics including radar data, elevation and weather types

 

 

   Gap-filling of satellite images using analogues – and other techniques (with particular focus on Landsat-7, but not only)

L7_forshow

 

 

Agent-based models for water resources management – and their use to incorporate social dynamics

 

 

Gap-filling of environmental time series

 

 

Multiple-point simulation using graph cuts

 

 

 

Fusion of radar and rain gauge data (and combining data more in general)

 

 

Space-time rainfall simulation

 

 

Optimal sampling design aided by training images

 

 

Multiple-point simulation with block constraints

 

 

Graph cuts for efficient geostatistical inversion

 

 

Lidar remote sensing in caves and the relationships between cave morphology and water percolation

 

 

MPS with local proportions and trends

 

 

MPS for time series modeling – also for rainfall modeling

 

 

Multiscale MPS modeling

 

 

Training image selection and validation

 

 

Stochastic simulation of meandering structures with satellite-based analogs

 

 

Texture synthesis algorithms – including Image Quilting

 

 

Climate models downscaling – see also rainfall downscaling

 

 

Image Quilting

 

 

Validation of training images by patterns comparison

 

Download the Fortran code for patterns validation

 

 

Probabilistic mapping of buried soil features

 

 

Reconstruction of buried paleovalleys

 

 

River bathymetry modeling

 

 

Meanders generation

 

 

Remote sensing spatio-temporal gaps reconstruction

 

 

Percolation processes in karst environments and chaotic behavior

 

 

Paleoclimate data quantitative analysis

Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: D:\DATA\Documents\Papers\2011_flickering\figures tif\autocorr_vario_BW.tif

 

 

Super-Resolution

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Transform-invariant distances – with applications to subsurface models

Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: 3D_simuls_v2b_continuous_only

 

Spatial inverse problems: Iterative Spatial Resampling

Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: D:\DATA\Documents\Papers\2009_ISR\figures\tif\resampling_with_SGS.tif

 

Direct Sampling multiple-point simulation

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Parallelization

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Image/volume completion

 Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: D:\DATA\Documents\Papers\reconstruction_&_super_resolution\figures\tif\borehole_image_reconstruction.tif

 

 

Probability aggregation

 

 

Plurigaussian simulations