Search results for "image"

showing 10 items of 6818 documents

En un lugar del Lower East Side

2013

Prólogo al libro de Rebeca Romero Escrivá, Las dos mitades de Jacob Riis. El texto reflexiona sobre los componentes literarios, fotográficos, testimoniales y reformistas de la obra del fotógrafo afincado en Nueva York Jacob Riis y sobre su destino en los museos y en la vida social norteamericana posterior. Preface to the Rebeca Romero's book, Las dos mitades de Jacob Riis, the essay takes into account the Riis' heritage in portraying, denouncing and fighting the state of some neighbourhoods in New York City. The article points at the life of Riis' works in museums and other media supports.

fotografía socialUNESCO::HISTORIANueva Yorkimagen e historia:HISTORIA [UNESCO]
researchProduct

Tecniche per la misura e il monitoraggio della superficie del fondo di un modello fluviale

2009

L’impiego di modelli fluviali per lo studio delle variazioni della morfologia del fondo è un argomento oggetto di interesse nel campo dell’idrologia a causa dei molteplici fenomeni interconnessi alla evoluzione di alvei naturali. Presso il laboratorio del Dipartimento di Ingegneria Idraulica e Applicazioni Ambientali dell’Università di Palermo, già da diversi anni, viene utilizzato un modello fluviale a fondo mobile per studiare i metodi di previsione della deformazione planimetrica ed altimetrica di un alveo naturale. Le ricerche condotte nel corso degli anni sono state finalizzate a ricostruire la configurazione di equilibrio del fondo deformato per effetto del deflusso della corrente. A …

fotogrammetria DSM modello idraulico image matchingSettore ICAR/06 - Topografia E Cartografia
researchProduct

Fast Photomosaic

2005

Photomosaic is a technique which transforms an input image into a rectangular grid of thumbnail images preserving the overall appearance. The typical photomosaic algorithm searches from a large database of images one picture that approximates a block of pixels in the main image. Since the quality of the output depends on the size of the database, it turns out that the bottleneck in each photomosaic algorithm is the searching process. In this paper we present a technique to speed-up this critical phase using the Antipole Tree Data Structure. This improvement allows the use of larger databases without requiring much longer processing time.

fotomozaikanefotorealistické vykreslováníComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONphotomosaicPhotomosaic Antipole tree non-photorealistic rendering image processing and enhancementzpracování obrazunon-photorealistic renderingimage processing
researchProduct

ESPERIMENTO DI SIMULAZIONE DELLA FORMAZIONE DEI RILL A SCALA DI PARCELLA

2016

Nella memoria sono riportati i risultati di un esperimento di simulazione della formazione del canale di un rill condotto in una parcella avente una dimensione 2x7 m2 ed una pendenza del 14% realizzata dal Dipartimento di Scienze Agrarie e Forestali dell’Università di Palermo. Una rete di solchi, costituita da due canali principali, è stata, dapprima incisa sul suolo manualmente e successivamente modellata utilizzando una corrente idrica limpida. Sui solchi modellati è stato effettuato, in corrispondenza di 11 sezioni trasversali della parcella, il rilievo delle caratteristiche geometriche e idrauliche utilizzando un profilometro. L’indagine ha inoltre previsto la realizzazione sia di un mo…

fotoricostruzione 3Derosione rilltecniche image-basedSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliDEM.
researchProduct

VERIFICA DI UNA TECNICA FOTOGRAFICA PER IL RILIEVO DELLA GEOMETRIA DI UN CANALE IN TERRA

2016

Nella memoria sono riportati i risultati delle verifiche di applicabilità di una tecnica image-based per il monitoraggio dei processi di erosione canalizzata. L’indagine, in particolare, ha avuto lo scopo di testare l’uso di modelli tridimensionali del terreno (DTM) ottenuti con l’impiego di un numero elevato di fotografie della stessa scena acquisite da differenti punti di vista (Tecnica “Structure-From Motion” SFM e “Multi-View-Stereo MVS). Il DTM tridimensionale (3D) è stato generato utilizzando il software open source Autodesk 123D Catch mentre per la creazione del Digital Elevation Model DEM (2.5D) è stato impiegato il software CloudCompare. Dei due canali in terra utilizzati nella spe…

fotoricostruzione 3Dtecniche image-basedDEMSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali
researchProduct

The effects of image compression on quantitative measurements of digital panoramic radiographs

2012

WOS: 000314401800026

fractal dimensionPanoramic radiographOdontologíaangular measurementsMandibular first molarFractal dimensionstomatognathic systemClinical and Experimental DentistryRadiography PanoramicHumansGonial angleDigital panoramic radiographyeducationGeneral DentistryMathematicsObserver VariationOrthodonticseducation.field_of_studyRadiography Dental DigitalRepeatabilitycomputer.file_formatData Compression:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludJPEGimage compressionTagged Image File FormatOtorhinolaryngologyUNESCO::CIENCIAS MÉDICASlinear measurementsResearch-ArticleSurgerycomputerData compressionMedicina Oral Patología Oral y Cirugia Bucal
researchProduct

Imagen, lugar de memoria y mito. En torno al Alcázar de Toledo

2009

El presente texto analiza la función de la producción de imágenes (fotográficas, pictóricas, cinematográficas, arquitectónicas) en la mitología franquista que se refiere a la guerra civil. El Alcázar de Toledo fue un escenario emblemático de la guerra, un lugar de memoria por su resistencia, pero también un edificio aureolado de historia. A través del estudio del tratamiento arquitectónico que se dio al edificio (mantenimiento de las ruinas, restauración...), así como de su vida ceremonial, es posible analizar la visión épica que alimentó la memoria franquista y la relación entre el pasado imaginado y el presente.This paper analyzes the role of the images in the Francoist mythology concerni…

francoismmedia_common.quotation_subjectEPICimagenlcsh:D1-2009Historiaimagelcsh:1789-franquismomedia_commonlugares de memorialcsh:History (General) and history of Europecinespanish civil warArtMythologysites of memorylcsh:History (General)Spanish Civil Warlcsh:DcinemaFortress (chess)lcsh:D299-475//udcdata.info/068273 [http]Humanitiesguerra civil española
researchProduct

An interactional ‘live eye tracking’ study in autism spectrum disorder : combining qualitative and quantitative approaches in the study of gaze

2017

Recent studies on gaze behaviours in individuals with autism spectrum disorder (ASD) have utilised “live eye tracking.” Such research has focused on generating quantitative eye tracking measurements, which provide limited (if any) qualitative contextual details of the actual interactions in which gaze occurs. This article presents a novel methodological approach that combines live eye tracking with qualitative interaction analysis, multimodally informed conversation analysis. Drawing on eye tracking and wide-angle video recordings, this combination renders visible some of the functions, or what gaze “does,” in interactional situations. The participants include three children with ASD and th…

functions of gazeconversation analysisgenetic structuresComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONDevelopmental psychology03 medical and health sciencessilmänliikkeet0302 clinical medicineInformationSystems_MODELSANDPRINCIPLESautismimedicine0501 psychology and cognitive sciencesAutism spectrum disorderGeneral Psychologyta515keskustelunanalyysi05 social sciencesmedicine.diseaseGazelive eye trackingConversation analysisgaze shiftsAutism spectrum disorderEye trackingkatsePsychology030217 neurology & neurosurgery050104 developmental & child psychologyCognitive psychologyQualitative Research in Psychology
researchProduct

A Performance Evaluation of Fusion Techniques for Spatio-Temporal Saliency Detection in Dynamic Scenes

2013

International audience; Visual saliency is an important research topic in computer vision applications, which helps to focus on regions of interest instead of processing the whole image. Detecting visual saliency in still images has been widely addressed in literature. However, visual saliency detection in videos is more complicated due to additional temporal information. A spatio-temporal saliency map is usually obtained by the fusion of a static saliency map and a dynamic saliency map. The way both maps are fused plays a critical role in the accuracy of the spatio-temporal saliency map. In this paper, we evaluate the performances of different fusion techniques on a large and diverse datas…

fusionComputer scienceComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION02 engineering and technology[ INFO.INFO-CV ] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]Image (mathematics)Visual salincy[INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]Salience (neuroscience)0202 electrical engineering electronic engineering information engineeringComputer visionSaliency mapcontext informationFusionImage fusionbusiness.industry[INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]020207 software engineeringPattern recognitionSpatio-temporal saliencyperformance evaluationKadir–Brady saliency detector020201 artificial intelligence & image processingArtificial intelligenceFocus (optics)business
researchProduct

deaR-Shiny: An Interactive Web App for Data Envelopment Analysis

2021

In this paper, we describe an interactive web application (deaR-shiny) to measure efficiency and productivity using data envelopment analysis (DEA). deaR-shiny aims to fill the gap that currently exists in the availability of online DEA software offering practitioners and researchers free access to a very wide variety of DEA models (both conventional and fuzzy models). We illustrate how to use the web app by replicating the main results obtained by Carlucci, Cirà and Coccorese in 2018, who investigate the efficiency and economic sustainability of Italian regional airport by using two conventional DEA models, and the results given by Kao and Liu in their papers published in 2000 and 2003, wh…

fuzzy deaOperations researchComputer scienceGeography Planning and Development0211 other engineering and technologiesTJ807-83002 engineering and technologyManagement Monitoring Policy and LawTD194-195Fuzzy logic:CIENCIAS ECONÓMICAS [UNESCO]R softwareRenewable energy sourcesmalmquist indexSoftwareMalmquist indexDEA0202 electrical engineering electronic engineering information engineeringData envelopment analysisFuzzy numberWeb applicationGE1-350fuzzy DEAMeasure (data warehouse)021103 operations researchEnvironmental effects of industries and plantsRenewable Energy Sustainability and the Environmentbusiness.industryshinydear packageUNESCO::CIENCIAS ECONÓMICASMissing dataVariety (cybernetics)Environmental sciencesdeaefficiency020201 artificial intelligence & image processingdata envelopment analysisdeaR packagebusinessr softwareSustainability
researchProduct