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A list of all the posts and pages found on the site. For you robots out there is an XML version available for digesting as well.
Pages
Dr. Nelson Díaz
About me
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Posts
PostDoctoral internship in Universidad Industrial de Santander, Colombia, 2023
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PostDoctoral internship at High Dimensional Signal Processing Research Group (HDSP), Universidad Industrial de Santander in Bucaramanga, Colombia
PostDoctoral internship in Université du Québec, Canada, 2023
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Internship 2023 at Laboratory of Applied Computational Imaging (LACI), Université du Québec in Montreal, Canada
IEEE Research and Applications of Photonics in Defense 2023
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Attendance at RAPiD 2023 conference in Destin, Florida, United States of America
Optica Imaging Congress 2023
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Attendance at COSI 2023 conference in Boston, Massachusett, United States of America
Internship 2023 at Universidad de la Frontera in Temuco, Chile
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PostDoctoral and Doctoral internship at Information Processing Laboratory in Temuco, Chile, 2023
Internacional Workshop on Adaptive, Compressive and Computational Imaging – WACCI 2022
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Participation at the WACCI Workshop in Bucaramanga, Colombia
Imaging and Applied Optics Congress 2022
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Attendance at COSI 2022 conference in Vancouver, British Columbia, Canada
8th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2019)
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Attendance at CAMSAP 2019 conference in Guadeloupe, France
27th European Signal Processing Conference (EUSIPCO 2019)
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Attendance at EUSIPCO 2019 conference in A Coruña, Spain
Doctoral internship in France, 2018-2019
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Internship 2018-2019 in Toulouse, France
Computational Optical Sensing and Imaging, COSI 2017
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Attendance at COSI 2017 conference, in San Francisco, California, United States
SPIE Defense + Commercial Sensing 2016
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Attendance at SPIE 2016 conference in Baltimore, MD, United States
Master internship in College Station, Texas USA, 2015
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Internship 2015 in Texas, USA
CoSeRa 2015
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Attendance at CoSeRa 2015 conference in Pisa, Italy
portfolio
Real-time ground filtering algorithm of cloud points acquired using Terrestrial Laser Scanner (TLS)
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This repository contains tools to simulate the ground filtering process of a registered point cloud. The repository contain two filtering methods. The first method uses normal-vector, and fit to plane. The second method utilizes voxel adjacency, and fit to plane. This repository contains the code to reproduce the results presented in the paper following paper:
Adaptive Multisensor Acquisition via Spatial Contextual Information for Compressive Spectral Image Classification
Published:
This repository aims to adaptive design the coded apertures from compressive spectral images acquired with a multisensor camera. The classification is performed using the captured compressive projections. 
publications
High-dynamic range compressive spectral imaging by grayscale coded aperture adaptive filtering
Published in Ingeniería e Investigación, 2015
Recommended citation: N. Diaz, H. Rueda, and H. Arguello. “High-dynamic range compressive spectral imaging by grayscale coded aperture adaptive filtering” Ingeniería e Investigación. vol. 35, pp. 53-60. 2015. [Paper], [DOI],[Open access].
Evaluación de algoritmos bioinspirados para el problema de planificación de trabajos
Published in I+D revista de investigaciones, 2018
Recommended citation: E. Florez, N. Diaz, W. Goméz, L. Bautista and D. Delgado. “Evaluación de algoritmos bioinspirados para el problema de planificación de trabajos” I+D revista de investigaciones. vol. 1, pp. 133-143. 2018. [Paper], [DOI],[Open access].
Adaptive filter design via a gradient thresholding algorithm for compressive spectral imaging
Published in Applied Optics, 2018
Recommended citation: N. Diaz, H. Rueda, and H. Arguello. “Adaptive filter design via a gradient thresholding algorithm for compressive spectral imaging,” Applied Optics, vol. 57, pp. 4890-4900. 2018. [Paper], [DOI].
Adaptive grayscale compressive spectral imaging using optimal blue noise coding patterns
Published in Optics & Laser Technology, 2019
Recommended citation: N. Diaz, C. Hinojosa, and H. Arguello. “Adaptive grayscale compressive spectral imaging using optimal blue noise coding patterns,” Optics & Laser Technology, vol. 117, pp. 147-157. 2019. [Paper], [DOI], [Code].
Adaptive Multisensor Acquisition via Spatial Contextual Information for Compressive Spectral Image Classification.
Published in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Recommended citation: N. Diaz, J. Ramirez, E. Vera and H. Arguello, “Adaptive Multisensor Acquisition via Spatial Contextual Information for Compressive Spectral Image Classification” IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 14, pp. 9254-9266. 2021. [TechRxiv], [DOI], [Code].
Real-time ground filtering algorithm of cloud points acquired using Terrestrial Laser Scanner (TLS)
Published in International Journal of Applied Earth Observation and Geoinformation, 2021
Recommended citation: N. Diaz, O. Gallo, J. Caceres, H. Porras. “Real-time ground filtering algorithm of cloud points acquired using Terrestrial Laser Scanner (TLS)” International Journal of Applied Earth Observation and Geoinformation,vol. 105, pp. 102629, 2021. [arXiv], [DOI], [Code].
Shuffled rolling shutter for snapshot temporal imaging
Published in Optics Express, 2022
Recommended citation: E. Vera, F. Guzmán, and N. Diaz, “Shuffled rolling shutter for snapshot temporal imaging,” Opt. Express, vol. 30, pp. 887-901, 2022. [Paper], [DOI], [Code].
Multispectral Filter Array Design by Optimal Sphere Packing
Published in IEEE Transactions on Image Processing, 2023
Recommended citation: N. Diaz, A. Alvarado, P. Meza, F. Guzmán and E. Vera, “Multispectral Filter Array Design by Optimal Sphere Packing,” IEEE Transactions on Image Processing, vol. 32, pp. 3634-3649, 2023. [DOI],[Paper], [TechRxiv], [Code].
Shuffled Rolling Shutter Camera
Published in Springer International Publishing, 2023
Recommended citation: E. Vera, F. Guzmán and N. Diaz, “Shuffled Rolling Shutter Camera,” Springer International Publishing, pp. 499-513, 2023. [DOI].
talks
Algoritmo Inmune de Selección Clonal para el problema de Job Shop Scheduling
Published:
Recommended citation: N. Diaz, J. Luna, W. Gomez, and L. Bautista. “Algoritmo Inmune de Selección Clonal para el problema de Job Shop Scheduling,” Infornor Chile 2013 IV Congreso Internacional de Computación e Informática del Norte de Chile, Coquimbo. 2013. [Paper].
High-dynamic range compressive spectral imaging by adaptive filtering
Published:
Recommended citation: N. Diaz, H. Rueda, and H. Arguello. “High-dynamic range compressive spectral imaging by adaptive filtering,” 2015 3rd International Workshop on Compressed Sensing Theory and its Applications to Radar, Sonar and Remote Sensing (CoSeRa). 2015. [Paper], [Link], [Slides].
Adaptive uniform grayscale coded aperture design for high dynamic range compressive spectral imaging
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Recommended citation: N. Diaz, H. Rueda, and H. Arguello. “Adaptive uniform grayscale coded aperture design for high dynamic range compressive spectral imaging,” Hyperspectral Imaging Sensors: Innovative Applications and Sensor Standards 2016. 2016. [Paper], [Link], [Slides].
Gradient thresholding algorithm for adaptive colored coded aperture design in compressive spectral imaging
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Recommended citation: N. Diaz, J. Bacca, and H. Arguello. “Gradient thresholding algorithm for adaptive colored coded aperture design in compressive spectral imaging,” in Imaging and Applied Optics 2017 (3D, AIO, COSI, IS, MATH, pcAOP), OSA Technical Digest (online) (Optica Publishing Group, 2017), paper JTu5A.4. [Paper], [Link], [Poster].
Compressive light field spectral imaging in a single-sensor device by using coded apertures
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Recommended citation: M. Marquez, N. Diaz, J. Bacca, S. Pertuz, and H. Arguello. “Compressive light field spectral imaging in a single-sensor device by using coded apertures,” in Imaging and Applied Optics 2017 (3D, AIO, COSI, IS, MATH, pcAOP), OSA Technical Digest (online) (Optica Publishing Group, 2017), paper CTh1B.5. [Paper], [Link], [Slides].
Cardiac Motion Estimation Using Convolutional Sparse Coding
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Recommended citation: N. Diaz, A. Basarab, J. -Y. Tourneret and H. A. Fuentes. “Cardiac Motion Estimation Using Convolutional Sparse Coding,” 2019 27th European Signal Processing Conference (EUSIPCO), 2019, pp. 1-5, doi: 10.23919/EUSIPCO.2019.8903163. [Paper], [Link], [Slides].
Adaptive Coded Aperture Design by Motion Estimation using Convolutional Sparse Coding in Compressive Spectral Video Sensing
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Recommended citation: N. Diaz, C. Noriega-Wandurraga, A. Basarab, J. -. Tourneret and H. Arguello. “Adaptive Coded Aperture Design by Motion Estimation using Convolutional Sparse Coding in Compressive Spectral Video Sensing” 2019 IEEE 8th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2019 pp. 445-449. [Paper], [Link], [Slides].
Compressive Classification via Deep Learning using Single-Pixel Measurements
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Recommended citation: J. Bacca, N. Diaz and H. Arguello, “Compressive Classification via Deep Learning using Single-Pixel Measurements,” 2020 Data Compression Conference (DCC), 2020, pp. 359-359, doi: 10.1109/DCC47342.2020.00084. [Paper], [Link].
Improved compressive temporal imaging using a shuffled rolling shutter
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Recommended citation: F. Guzmán, N. Díaz, and E. Vera. “Improved Compressive Temporal Imaging using a Shuffled Rolling Shutter,” in OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES), paper JTh6A.9. [Paper], [Link], [Poster].
Multispectral mosaic design using a sphere packing filter array
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Recommended citation: A. Alvarado, N. Díaz, P. Meza, F. Guzmán, , and E. Vera. “Multispectral mosaic design using a sphere packing filter array,” in Imaging and Applied Optics Congress 2022 (3D, AOA, COSI, ISA, pcAOP), paper CTh4C.1. [Paper], [Link], [Presentation].
Compressive spectral video by optimal 4D-sphere packing
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Recommended citation: N. Díaz, A. Alvarado, P. Meza, and E. Vera. “Compressive spectral video by optimal 4D-sphere packing,” in Optica Imaging Congress (3D, COSI, DH, FLatOptics, IS, pcAOP), paper CM1E.4. [Paper], [Link], [Presentation].
A sphere packing approach to design multiplexed multispectral filter arrays
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Recommended citation: A. Alvarado, N. Díaz, P. Meza, and E. Vera. “A sphere packing approach to design multiplexed multispectral filter arrays,” in Optica Imaging Congress (3D, COSI, DH, FLatOptics, IS, pcAOP), paper CTh2A.6. [Paper], [Link], [Presentation]
Compressive Spectral-Video by Optimal 3D-Sphere Packing
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Recommended citation: N. Díaz, and E. Vera. “Compressive Spectral-Video by Optimal 3D-Sphere Packing,” in 2023 IEEE Research and Applications of Photonics in Defense Conference (RAPID), TuE2: Spectral, Polarimetric, and Multimodal Imaging. [Paper], [Link], [Presentation].
teaching
Numerical Analysis (Laboratory Assistant)
Undergraduate course, Universidad Industrial de Santander, Department of Computer Science Engineering, 2015
Digital Image Processing
Undergraduate course, Universidad Industrial de Santander, Department of Electrical Engineering, 2016
Structure Programming
Undergraduate course, Universidad de Investigación Y Desarrollo, Department of System Engineering, 2020
Programming Fundamentals
Undergraduate course, Universidad de Investigación Y Desarrollo, Department of System Engineering, 2020
Information and Communications Technology
Undergraduate course, Universidad de Investigación Y Desarrollo, Department of System Engineering, 2020