Alfonso López Ruiz

Alfonso López Ruiz

he/him

Assistant Professor at University of Zaragoza

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A list of all the posts and pages found on the site. For you robots out there, there is an XML version available for digesting as well.

Pages

Posts

Acceleration of Non-Line-of-Sight reconstructions

less than 1 minute read

Published:

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portfolio

publications

A framework for registering UAV-based imagery for crop-tracking in Precision Agriculture

Published in International Journal of Applied Earth Observation and Geoinformation, 2021

Q1 (Impact Factor: 7.5)

Recommended citation: López, A., Jurado, J. M., Ogayar, C. J., & Feito, F. R. (2021). A framework for registering UAV-based imagery for crop-tracking in Precision Agriculture. International Journal of Applied Earth Observation and Geoinformation, 97, 102274. https://doi.org/10.1016/j.jag.2020.102274.
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Remote sensing image fusion on 3D scenarios: A review of applications for agriculture and forestry

Published in International Journal of Applied Earth Observation and Geoinformation, 2022

Q1 (Impact Factor: 7.5)

Recommended citation: Jurado, J. M., López, A., Pádua, L., & Sousa, J. J. (2022). Remote sensing image fusion on 3D scenarios: A review of applications for agriculture and forestry. International Journal of Applied Earth Observation and Geoinformation, 112, 102856. https://doi.org/10.1016/j.jag.2022.102856.
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Guided Modeling of Natural Scenarios: Vegetation and Terrain

Published in Congreso Español de Informática Gráfica (CEIG), 2022

National

Recommended citation: Collado, J. A., López, A., Pérez, J. R. J., Ortega, L. M., Feito, F. R., & Jurado, J. M. (2022). Guided Modeling of Natural Scenarios: Vegetation and Terrain. In Spanish Computer Graphics Conference (CEIG) (pp. 39–43). The Eurographics Association. https://doi.org/10.2312/CEIG.20221144.
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Kalathos+: Construcción de datasets para la clasificación automática de fragmentos de vasijas cerámicas de torno

Published in Congreso Español de Informática Gráfica (CEIG), 2022

National

Recommended citation: Segura, R. J., Rueda, A. J., Ogáyar, C. J., Fuertes, J. M., García-Fernández, Á. L., Lucena, M. J., López, A., Moreno, I., & Molinos, M. (2022). Kalathos+: Construcción de datasets para la clasificación automática de fragmentos de vasijas cerámicas de torno. In Spanish Computer Graphics Conference (CEIG) (pp. 45–48). The Eurographics Association. https://doi.org/10.2312/CEIG.20221145
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GPU-based Mapping of Thermal Imagery for Generating 3D Occlusion-Aware Point Clouds

Published in IGARSS - IEEE International Geoscience and Remote Sensing Symposium, 2022

CORE:C

Recommended citation: López, Alfonso and Jurado, Juan M. and Ogayar, Carlos J. and Feito, Francisco R. (2022). GPU-based Mapping of Thermal Imagery for Generating 3D Occlusion-Aware Point Clouds. IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium 1460-1463.
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Nested spatial data structures for optimal indexing of LiDAR data

Published in ISPRS Journal of Photogrammetry and Remote Sensing, 2023

Q1 (Impact Factor: 12.7)

Recommended citation: Ogayar-Anguita, C. J., López-Ruiz, A., Rueda-Ruiz, A. J., & Segura-Sánchez, R. J. (2023). Nested spatial data structures for optimal indexing of LiDAR data. ISPRS Journal of Photogrammetry and Remote Sensing, 195, 287–297. https://doi.org/10.1016/j.isprsjprs.2022.11.018.
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Detection of landscape features with visible and thermal imaging at the Castle of Puerta Arenas

Published in Archaeological and Anthropological Sciences, 2023

Q2 (Impact Factor: 2.1)

Recommended citation: Collaro, C., Enríquez-Muñoz, C., López, A., Enríquez, C., & Jurado, J. M. (2023). Detection of landscape features with visible and thermal imaging at the Castle of Puerta Arenas. Archaeological and Anthropological Sciences, 15(10). https://doi.org/10.1007/s12520-023-01831-3.
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SAM-Based Detection of Structural Anomalies in 3D Models for Preserving Cultural Heritage

Published in 19th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2024), 2024

Core:B

Recommended citation: Jurado-Rodríguez, D., López, A., Jiménez, J., Garrido, A., Feito, F., & Jurado, J. (2024). SAM-Based Detection of Structural Anomalies in 3D Models for Preserving Cultural Heritage. In Proceedings of the 19th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (pp. 741–748). 19th International Conference on Computer Vision Theory and Applications. SCITEPRESS - Science and Technology Publications. https://doi.org/10.5220/0012464000003660
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Eye-tracking on virtual reality: a survey

Published in Virtual Reality, 2024

Q1 (Impact Factor: 4.4)

Recommended citation: Moreno-Arjonilla, J., López-Ruiz, A., Jiménez-Pérez, J. R., Callejas-Aguilera, J. E., & Jurado, J. M. (2024). Eye-tracking on virtual reality: a survey. Virtual Reality, 28(1). https://doi.org/10.1007/s10055-023-00903-y
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Change Detection in Point Clouds Using 3D Fractal Dimension

Published in Remote Sensing, 2024

Q1 (Impact Factor: 4.1)

Recommended citation: Casas-Rosa, J. C., Navarro, P., Segura-Sánchez, R. J., Rueda-Ruiz, A. J., López-Ruiz, A., Fuertes, J. M., Delrieux, C., & Ogayar-Anguita, C. J. (2024). Change Detection in Point Clouds Using 3D Fractal Dimension. Remote Sensing, 16(6), 1054. https://doi.org/10.3390/rs16061054
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Automatic Agrivoltaic Site Selection: a User-Friendly Interface powered by AHP Multicriteria Decision-Making

Published in 41st European Photovoltaic Solar Energy Conference and Exhibition, 2024

Non-rated

Recommended citation: de Sousa Cardoso, A., López Ruiz, A., Ramos Galán, M. I., Jurado, J. M., & Feito Higueruela , F. R. (2024). Automatic Agrivoltaic Site Selection: a User-Friendly Interface powered by AHP Multicriteria Decision-Making. In 41st European Photovoltaic Solar Energy Conference and Exhibition (pp. 020422-001-020422–006). WIP-Munich. https://doi.org/10.4229/EUPVSEC2024/4DO.3.4
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Virtualized Point Cloud Rendering

Published in IEEE Transactions on Visualization and Computer Graphics, 2025

Q1 (Impact Factor: 6.5)

Recommended citation: Collado, J. A., López, A., Jurado, J. M., & Jiménez, J. R. (2025). Virtualized point cloud rendering. IEEE Transactions On Visualization And Computer Graphics, 31(10), 8026-8039. https://doi.org/10.1109/tvcg.2025.3562696
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supervision

talks

teaching

Computer Systems Applied to Financial Analysis

Undergraduate course, University of Jaén, Department of Computer Science, 2021

This course covers the fundamentals of computer systems and their application to financial analysis. Topics include data management, financial modeling, and the use of Microsoft Excel for financial computations.

At first, I expected the course to be somewhat boring, but it turned out to be quite interesting. For example, Microsoft Excel offers powerful features, such as genetic algorithms for solving optimization problems. We also implemented a simple recommender system based on a database of user ratings for films.

The slides I prepared for the course were published in the institutional repository (CREA).

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Development of Graphic Applications

Undergraduate course, University of Jaén, Department of Computer Science, 2022

Development of Graphic Applications teaser

This course covers the fundamentals of computer graphics and the development of graphic applications. Topics include 3D graphics, rendering techniques, user interaction, and the use of graphics libraries such as OpenGL 4.5, GLM and GLEW.

Besides covering basic concepts, the course also includes advanced topics such as shader programming with GLSL, texture mapping, lighting models, and generation of profile-based 3D objects. We also briefly covered optimization techniques for real-time rendering.

The slides I prepared for the course were published in the institutional repository (CREA).

Download Slides

Geometric algorithms

Undergraduate course, University of Jaén, Department of Computer Science, 2023

Geometric algorithms teaser

This course introduces the fundamentals of geometric algorithms and their practical applications. Topics include computational geometry, geometric data structures, convex hulls, Voronoi diagrams, Delaunay triangulations, and geometric searching algorithms.

As many students may have no prior background in computer graphics or geometry, we developed a baseline programming project in C++ using OpenGL 4.5 to support the interactive visualization of geometric concepts and algorithms. The project repository is available on GitHub. Installation and usage instructions have been published in the institutional repository (CREA). An up-to-date version of the installation guide is also maintained in my Overleaf project.

In addition, we designed a more advanced final assignment in which students implemented a 3D convex hull algorithm using the gift-wrapping method. The full assignment description and instructions are available in the institutional repository (CREA).

The lecture slides prepared for the course are provided below.

Download Slides

Computer Graphics & Visualization

Undergraduate course, University of Jaén, Department of Computer Science, 2023

Computer Graphics & Visualization teaser

This course introduces the fundamentals of computer graphics and visualization. Topics include 3D graphics, rendering techniques, user interaction, and the use of graphics libraries such as OpenGL 3.0. Note that this an introductory course, so no prior knowledge of computer graphics is assumed, and students further interested in the topic can take more advanced courses, such as Development of Graphic Applications and Geometric Algorithms.

The slides I prepared for the course were published in the institutional repository (CREA).

Download Slides

Management of Software Projects

Undergraduate course, University of Jaén, Department of Computer Science, 2023

This course introduces the fundamentals of software project management. Topics include project planning, risk management, quality assurance, team collaboration, and the use of project management tools such as Jira.

Data Structures (30213)

Undergraduate course, University of Zaragoza, Department of Computer Science & Engineering Systems, 2025

Data Structures teaser

This course introduces the fundamentals of data structures and their applications in computer science. Topics include arrays, linked lists, stacks, queues, trees, graphs, hash tables, and algorithms for searching. The assignments involve implementing various data structures in C++ and optimizing their performance for an specific set of operations.

I am planning on releasing soon the slides and materials I prepared for the course :).

Introduction to Programming (29804)

Undergraduate course, University of Zaragoza, Department of Computer Science & Engineering Systems, 2025

Introduction to Programming teaser

This course introduces the fundamentals of programming using Java. Topics include basic syntax, control structures, data types, object-oriented programming, and array manipulation. The assignments involve writing simple Java programs to solve various problems, with an emphasis on good coding practices and code readability.

I am planning on releasing soon the slides and materials I prepared for the course :).

Foundations of Computer Science (30717)

Undergraduate course, University of Zaragoza, Department of Computer Science & Engineering Systems, 2026

This course covers a few topics related to computer science, from programming Processing sketches to understanding the basics of the Java programming language. Given that this subject is part of the curriculum of the Bachelor’s Degree in Architecture, the course also focuses on learning how to use a few software tools commonly used in the field, such as Grasshopper.