Felipe Santibáñez-Leal

Felipe Santibáñez-Leal

Unraveling a path for Applied Scientific Research

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Pages

Posts

portfolio

FeelIT

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Haptic and VR Interactive platform for visually impaired people

HyClus Viz

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A short Undergraduate Project for HSI Clustering Visualization

publications

SOFI of GABAB neurotransmitter receptors in hippocampal neurons elucidates intracellular receptor trafficking and assembly

Published in Proceddings SPIE, 2013

The assembly of the GABABRs in hippocampal neurons with dual-color, 3D super-resolution optical fluctuation imaging (SOFI) is studied. SOFI is a fluorescence imaging modality which yields superresolved spatial resolution, 3D-sectioning and high image contrast.

Recommended citation: Anja Huss, Omar Ramírez, Felipe Santibáñez, Andrés Couve, Steffen Härtel, and Jörg Enderlein. (2013). "SOFI of GABAB neurotransmitter receptors in hippocampal neurons elucidates intracellular receptor trafficking and assembly." Proc. SPIE 8590, Single Molecule Spectroscopy and Superresolution Imaging VI. 85900N. https://doi.org/10.1117/12.2006215

Computational methods for analysis of dynamic events in cell migration

Published in Current Molecular Medicine, 2014

Image processing approaches for quantitative description of cell migration in 2- and 3-dimensional image series, including registration, segmentation, shape and topology description, tracking and motion fields are presented. We discuss advantages, limitations and suitability for different approaches and levels of description.

Recommended citation: Castañeda V, Cerda M, Santibáñez F, Jara J, Pulgar E, Palma K, Lemus CG, Osorio-Reich M, Concha ML, Härtel S. (2014). "Computational methods for analysis of dynamic events in cell migration." Current Molecular Medicine. 14(2). PMID: 24467201. https://doi.org/10.2174/1566524014666140128113952

Channelized facies recovery based on weighted compressed sensing

Published in 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), 2016

A new image reconstruction algorithm is proposed based on weighted compressed sensing (WCS) for the problem of channelized facies recovery from pixel-based measurements.

Recommended citation: H. Calderón, F. Santibañez, J. F. Silva, J. Ortiz and Á. Egaña. (2015). "Channelized facies recovery based on weighted compressed sensing." 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM). Rio de Janerio, pp. 1-5. https://doi.org/10.1109/SAM.2016.7569627

Sampling Strategies for Uncertainty Reduction in Categorical Random Fields: Formulation, Mathematical Analysis and Application to Multiple-Point Simulations

Published in Mathematical Geosciences, 2019

The task of optimal sampling for the statistical simulation of a discrete random field is addressed from the perspective of minimizing the posterior uncertainty of non-sensed positions given the information of the sensed positions.

Recommended citation: Felipe Santibañez, Jorge F. Silva, and Julián M. Ortiz. (2019). "Sampling Strategies for Uncertainty Reduction in Categorical Random Fields: Formulation, Mathematical Analysis and Application to Multiple-Point Simulations." Mathematical Geosciences . 51. pp 579 - 624 https://doi.org/10.1007/s11004-018-09777-2

Geological Facies Recovery Based on Weighted ℓ1-Regularization

Published in Mathematical Geosciences, 2019

A weighted compressed sensing (WCS) algorithm is proposed for the problem of channelized facies reconstruction from pixel-based measurements.

Recommended citation: Hernan Calderon, Felipe Santibañez, Jorge F. Silva, Julián M. Ortiz, and Alvaro Egaña. (2015). "Geological Facies Recovery Based on Weighted ℓ1-Regularization." Mathematical Geosciences. 52. pp 593 - 617. https://doi.org/10.1007/s11004-019-09825-5

An information-theoretic sampling strategy for the recovery of geological images:modeling, analysis, and implementation

Published in Doctoral dissertation, Universidad de Chile, 2019

In this work, the formulation and experimental analysis of the Optimal Sensor Placement (OSP) problem has been investigated in the context of categorical 2-D models with spatial dependence.

Recommended citation: Santibáñez Leal, Felipe Andrés. (2019). "An information-theoretic sampling strategy for the recovery of geological images:modeling, analysis, and implementation." Doctoral dissertation, Electrical Engineering, Universidad de Chile. pp 1 - 153. http://repositorio.uchile.cl/handle/2250/175050

Ore-Waste Discrimination with Adaptive Sampling Strategy

Published in Natural Resources Research, 2020

In this paper, a method to select sampling locations is proposed in an advanced drilling grid for short-term planning and grade control in order to improve the correct assessment (ore-waste discrimination) of blocks.

Recommended citation: Felipe A. Santibáñez-Leal, Julián M. Ortiz, and Jorge F. Silva. (2020). "Ore-Waste Discrimination with Adaptive Sampling Strategy." Natural Resources Research. 29. pp 3079 - 3102 https://doi.org/10.1007/s11053-020-09625-3

Multi Pixel Stochastic Approach to Mineral Samples Spectral Analysis for Geometallurgical Modeling

Published in Procemin Geomet, 2020

This work proposes a novel approach for analysis of spectra data for the mining industry, that uses multi pixel hyperspectral images and statistical analysis techniques to overcome the effects of ambient conditions and geological context variability to estimate critical geological and geometallurgical interest variables.

Recommended citation: Cristian F. Jara, Alejandro Ehrenfeld, Álvaro F. Egaña, Christian Vidal, Felipe A. Santibáñez-Leal. (2020). "Multi Pixel Stochastic Approach to Mineral Samples Spectral Analysis for Geometallurgical Modeling." Procemin Geomet. pp 1 - 17. https://gecamin.com/procemin.geomet/index.php#home

A Robust Stochastic Approach to Mineral Hyperspectral Analysis for Geometallurgy

Published in Minerals, 2020

This work summarizes the research carried out for the characterization of geometallurgical samples, through the use of signal and image processing tools, with the use of hyperspectral data.

Recommended citation: Alvaro F. Egaña, Felipe A. Santibáñez-Leal, Christian Vidal, Gonzalo Díaz, Sergio Liberman, and Alejandro Ehrenfeld. (2020). "A Robust Stochastic Approach to Mineral Hyperspectral Analysis for Geometallurgy." Minerals, Special Issue: Advanced Spectral Techniques for Mineralogical and Elemental Analysis in Mining and Mineral Processing. Online first. https://www.mdpi.com/2075-163X/10/12/1139

Analysis of seismic tomography and geological data to identifying spatial relationships between large ore deposits in northern Chile using machine learning methods: Preliminary results

Published in AGU Fall Meeting, 2021

This work shows that machine learning techniques are useful to understand the spatial relationships between large porphyry copper deposits within other data sources towards mineral exploration.

Recommended citation: Comte, D., “Analysis of seismic tomography and geological data to identifying spatial relationships between large ore deposits in northern Chile using machine learning methods: Preliminary results”, vol. 2021, Art. no. H35M-1172, 2021. https://ui.adsabs.harvard.edu/abs/2021AGUFM.H35M1172C/abstract

Geometallurgical estimation of mineral samples from hyperspectral images and topic modelling

Published in 18 International Conference on Mineral Processing and Geometallurgy, 2022

The problem of characterizing the spatial-spectral variability of mineral samples is formalized as a topic modelling task, a central technique from the field of natural language processing.

Recommended citation: Felipe A. Santibáñez-Leal, Alejandro Ehrenfeld, Felipe Garrido, Felipe Navarro and Álvaro Egaña (2022). Geometallurgical estimation of mineral samples from hyperspectral images and topic modelling. 18 International Conference on Mineral Processing and Geometallurgy, Sept 2022. https://www.researchgate.net/publication/369708272_Geometallurgical_estimation_of_mineral_samples_from_hyperspectral_images_and_topic_modelling

rollings

Visiting Parque Tumbes

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After several years I have revisited some sectors of my childhood in Talcahuano Chile. I came to visit my girlfriend, Gloria, who lives in this region of Chile.

Detail from my fiancee

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My girlfriend, Gloria, sent me gifts from afar, so as not to forget us.

Sorting ideas

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Attempt to organize the theme related to the thesis.

Habia una vez

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Trying a new place for breakfast.

Improving workspaces

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My advisor sent us a new decoration for the lab.

Accident on my byke

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Hard moorning. A taxi driver reached my bicycle with his vehicle. a slight flight and a strong hit against the pavement is my memory of the event.

Travel to SAM 2016

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2016 IEEE Sensor Array and Multichannel Signal Processing Workshop, SAM 2016.

Donating blood

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Donate blood!!!

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New Portrait

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I am decorating my workspace with memories of my wife and La Bita.

Love portraits

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For a year, together with Gloria, we have started to have personalized portraits made from photographs of our trips and experiences.

The holidays are coming, to work!

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This beautiful time of year is coming, the holidays! Where everyone stops coming to university and I can work alone and calm.

Personal Water Dispenser

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During this month the university is in recess. Students do not come and only minimal essential staff, and I who do not take vacations XD, we stay here.

Community health and safety measures

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Currently I am part of the committee of co-owners of the Don Nicolas Building community. We have been trying to keep the supply of sanitary supplies to a minimum, but it is complex due to the lack of control by the government.

Pandemic Love

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The city regulations have established the mandatory use of masks. So my wife has had different masks made to cope with the situation.

Cleaning the Lab

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Due to the pandemic, the laboratories have been without use for a few months. It is necessary to do a general cleaning and reorder the samples and materials.

Loving Keto Food

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In an attempt to improve our health, we and Gloria have been trying to cut down on carbohydrates for several months.

Now I have my Grade

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Finally, the electrical engineering doctorate process is closed.

Teaching Online Classes

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Due to the pandemic, the medical informatics classes that I teach at the San Sebastian University must be carried out remotely.

The beautiful clays

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We began hyperspectral acquisition of clay samples using the available VNIR and SWIR cameras.

Starting a new batch of experiments

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A new evaluation of our systems for classification and prediction in real time of process variables from hyperspectral images begins.

Taking pictures of gravel

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Continuing with the taking of images of bags 1 and 3. These bags have 20 samples that consider arid material (gravel, fine gravel, coarse sand and fine sand).

Keto Sushi

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Sushi without rice is a low-carb alternative that allows you to continue enjoying the good things in life.

Christmas scene

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Making Christmas preparations for this pandemic year

Little Music Box

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Attempting to assemble small parts for a Christmas present.

Hardware Issues

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Our SWIR hyperspectral camera have some consistent Outliers XD.

Back to the University

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Despite not having a vacation this year, it’s time to go back to school!

Geologic Units Samples

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Just performed the acquisition of Hyperspectral data for a set of 30 samples associated to geological units of a mine under explotation.

Boring and Working

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Continuing with the activities of sample organization and acquisition of hyperspectral images.

Playing with Pellets

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New day, new session of spectral photography. Today to work with copper pellets.

Blue Fingers

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To change the pellet air a bit I will start processing a new data set.

New Device Data

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We are exploring potential collaborations with the pyrometallurgical laboratory of our university.

Easter Eggs

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Free day to share with family.

Second Set of Clays

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New set of clays for hyperspectral charcterization.

Ramen Day

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Resting day attempting a Delivery Ramen!.

Spider Day

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Resting day without any scheduled activity.

New Containers

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Looking for new containers for some samples.

Sampling Cements

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Starting the characterization of our industrial partner’s cement samples.

talks

Talk of my doctoral dissertation defense

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Slides of the presentation associated with the defense of the dissertation of my doctoral thesis, An information-theoretic sampling strategy for the recovery of geological images: modeling, analysis, and implementation.

Talk for Procemin Geomet 2020

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Slides of the presentation associated with the oral presentation for the Conference Procemin Geomet 2020.

teaching

Teaching at Graduate Master Program of Medical Informatics

Graduate course, University of Chile, Department of Anatomical Pathology, 2012

Development of Talks and plenaries related with microscopy, optics and super resolution. Performed activities were oriented to multidisciplinary student groups from health and engineering areas.

Teaching at Graduate Master Program of Medical Informatics

Graduate course, University of Chile, Department of Anatomical Pathology, 2014

Development of Talks and plenaries related with microscopy, optics and super resolution. Performed activities were oriented to multidisciplinary student groups from health and engineering areas.