Investigaciones: Envíos recientes
Mostrando ítems 21-40 de 1465
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Hybrid lighting enhances color accuracy in DLP-based 3D imaging
(Cartagena de IndiasIngeniería, 2024-08)Color accuracy is of immense importance in various fields, including biomedical applications, cosmetics, and multimedia. Achieving precise color measurements using diverse lighting sources is a persistent challenge. Recent ... -
Windthrows Detection With Satellite Remote Sensing Data: A Comparison Among Sentinel-2, Planet, And Cosmo Sky-Med Data
(Cartagena de IndiasCiencias Básicas, 2023-10-20)Wind disturbances represent a great source of damage in forests, and an assessment of such damage is very important for adequate forest management. Remote sensing is an effective tool for this purpose and can be used by ... -
Rapid Mapping of Waterbody Variations in the Central Rift Valley, Ethiopia, Using the Digital Earth Africa Open Data Cube
(Cartagena de IndiasCiencias Básicas, 2023-10-20)Mapping waterbodies variations through time is only possible thanks to the use of in-situ hydrometric sensors or remotely sensed data. Few areas around the world count with a functional in-situ sensor’s network, but all ... -
Individual Tree Crown Delineation and Biomass Estimation from LiDAR Data in Gorgona Island, Colombia
(Cartagena de IndiasCiencias Básicas, 2023-10-20)Biomass estimation is a crucial component in the areas of carbon storage and forest management. Biomass can be analyzed rather at forest or at Single Tree Level (STL) and studies in both directions can be found in literature. ... -
Land cover classification of Andean sub-basins in Colombia based on Sentinel-2 satellite images and deep learning
(Cartagena de IndiasCiencias Básicas, 2023-06-15)The Las Piedras River sub-basin, located in the department of Cauca, Colombia, is very important for the region, especially for the capital (Popayán). This is because this sub-basin contributes around 68.17% of the water ... -
Mapping dispersed houses in rural areas of Colombia by exploiting planet satellite images with convolutional neural networks
(Cartagena de IndiasCiencias Básicas, 2023-06-15)The Sustainable Development Goal (SDG) number 11 aims at making cities and human settlements more inclusive, safe, resilient, and sustainable. Complying with SDG 11 is a difficult task, especially when considering rural ... -
Detection of Different Crop Growth Stages by Applying Deep Learning Over Sentinel-2 Images of Bahía, Brazil
(Cartagena de IndiasCiencias Básicas, 2024-07-12)This study delves into the agricultural landscape of Bahia, Brazil, employing the Mask R-CNN deep learning model with satellite imagery to detect three crop growth stages (early, mid-growth and maturity stage). This model ... -
Fire Scars Mapping Over Brazilian Amazon Forest by Exploiting Sentinel-2 Data and Deep Learning
(Cartagena de IndiasCiencias Básicas, 2024-07-12)Wildfires in the Brazilian Amazon have raised significant concerns owing to the environmental, social, and global impacts associated with these events. They have led to habitat loss for various species and release of ... -
A Deep Learning Approach To Cloud And Shadow Detection In Multiresolution, Multitemporal And Multisensor Images
(Cartagena de IndiasCiencias Básicas, 2024-07-12)Accurate detection of clouds and shadows present in optical imagery is important in remote sensing for ensuring data quality and reliability. This study introduces a deep learning model capable of generating precise cloud ... -
Multitemporal Analysis of Inland Water Bodies in the Context of Water Security: A Colombian Case Study
(Cartagena de IndiasCiencias Básicas, 2024-07-11)This paper presents an analysis of two inland water bodies, Salvajina Reservoir and Sonso’s lagoon, located in the Upper Cauca River Basin, Colombia. Such analysis is carried out in the context of Water Security (WS) by ... -
Impact of land cover variations on the Morroa aquifer (Colombia) static and dynamic levels through remote sensing analysis
(Cartagena de IndiasCiencias Básicas, 2024-06-10)The Morroa aquifer plays a crucial role supplying drinking water to around one million residents across Sucre, Córdoba, and Bolívar departments in Colombia. However, it faces severe water stress, ranking as the second most ... -
Multiannual Change Detection in Long and Dense Satellite Image Time Series Based on Dynamic Time Warping
(Cartagena de IndiasCiencias BásicasCampus Tecnológico, 2024-07-22)High-resolution (HR) satellite image time series (SITS) are a valuable data source for analyzing land cover change (LCC) due to their large amount of spatial, spectral, and temporal information. However, most existing LCC ... -
Exploring out-of-focus camera calibration for improved UAV survey accuracy
(Cartagena de IndiasIngenieríaMaestría en Ingeniería, 2024-06-07)Calibrating large-range vision systems like UAV cameras is a complex task that often involves costly setups and the potential for errors due to inaccuracies in target fabrication. Traditional UAV surveying software typically ... -
Time Series Water Body Analysis Through Planet Satellite Imagery: A Coastal Urban Case Study
(Cartagena de IndiasIngenieríaMaestría en Ingeniería, 2024-06-10)Many water bodies play a crucial role as receiver of several urban basins within the water system of a city, these urban basins often face challenges of pollution and reduction in water flow, such as, the case of the Juan ... -
Improving skin color accuracy in DLP-based 3D reconstruction
(Cartagena de IndiasIngeniería, 2024-06-07)Color accuracy is crucial in several domains such as biomedical imaging, cosmetics, and multimedia. Digital Light Processing (DLP) with LEDs has increasingly become a popular lighting source in 3D scanning systems. Although ... -
Toward a target-free calibration of a multimodal structured light and thermal imaging system
(Cartagena de IndiasIngenieríaCampus Tecnológico, 2024-06-07)Current calibration methods for multimodal systems consisting of structured light and thermography use calibration targets with physical characteristics. However, defects in the manufacturing of these targets are common. ... -
Perchlorate in antarctica, origin, effects, treatments, environmental fate, and astrobiological perspectives: a review
(Cartagena de IndiasCiencias BásicasCampus Tecnológico, 2022-08-19)Perchlorate (ClO4−), which is a powerful endocrine disruptor affecting iodine fixation in the thyroid gland in humans and in biota, is a pollutant of natural and anthropogenic origin. For this reason, this pollutant must ... -
Familias diversas conformadas por sujetos expulsados de sus familias biológicas: una propuesta hermenéutica de protección constitucional
(Cartagena de IndiasDerechoCasa Lemaitre, 2024-08)Como consecuencia de las relaciones familiares de subordinación basadas en la dependencia, algunas personas son expulsadas de sus familias biológicas por ser sexualmente diversas, auto reconocidas con géneros divergentes ... -
Machine learning models for predicting geomagnetic storms across five solar cycles using Dst index and heliospheric variables
(Cartagena de IndiasCiencias BásicasCampus Tecnológico, 2024-08-14)This study aims to improve the understanding of geomagnetic storms by utilizing machine learning models and analyzing several heliophysical variables, such as the interplanetary magnetic field, proton density, solar wind ... -
Calibration method based on virtual phase-to-coordinate mapping with linear correction function for structured light system
(Cartagena de IndiasIngeniería, 2024-08-16)Structured light systems are crucial in fields requiring precise measurements, such as industrial manufacturing, due to their capability for real-time reconstructions. Existing calibration models, primarily based on stereo ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.
