Search results for "Vision algorithms"

showing 3 items of 3 documents

A cultural heritage experience for visually impaired people

2020

Abstract In recent years, we have assisted to an impressive advance of computer vision algorithms, based on image processing and artificial intelligence. Among the many applications of computer vision, in this paper we investigate on the potential impact for enhancing the cultural and physical accessibility of cultural heritage sites. By using a common smartphone as a mediation instrument with the environment, we demonstrate how convolutional networks can be trained for recognizing monuments in the surroundings of the users, thus enabling the possibility of accessing contents associated to the monument itself, or new forms of fruition for visually impaired people. Moreover, computer vision …

Cultural heritagePotential impactComputer scienceVisually impairedHuman–computer interactionSettore ING-INF/03 - TelecomunicazioniMediationComputer vision algorithmsImage processingnavigation visually impaired computer vision augmented reality cultural context convolutional neural network machine learning hapticPhysical accessibility
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Comparison of stereo vision techniques for cloud-top height retrieval

2007

This paper presents an ongoing study for the estimation of the cloud-top height by using only geometrical methods. In agreement with some recent studies showing that it is possible to achieve reliable height estimations not only with the classical methods based on radiative transfer, this article includes a comparison of performances of a selected set of vision algorithms devoted to extract dense disparity maps or motion fields from Infra Red stereo image pairs. This collection includes both area-based techniques and an optical flow-based method and the comparison is accomplished by using a set of cloudy scenes selected from the Along-Track Scanning Radiometer (ATSR2) database. The first gr…

RadiometerSettore INF/01 - Informaticabusiness.industryCloud topComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONOptical flowSet (abstract data type)GeographyStereopsisRadiative transferCloud-top height multi view stereo matching algorithms satellite infra red images optical flow.Computer visionArtificial intelligencebusinessVision algorithmsComputer stereo visionRemote sensing
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3D Map Computation from Historical Stereo Photographs of Florence

2018

The analysis of early photographic sources is fundamental for documenting and understanding the evolution of a city so rich in history and art as Florence. Indeed, by the 1860s several photographers used to work in town, and their images (often obtained through stereoscopic set-ups) can help us to reconstruct Florence in 3D as it was by the time of the Italian unification. The first and most delicate part of such reconstruction process is the computation of disparity maps from the historical stereo pairs. This is a very challenging task for fully-automatic computer vision algorithms, since XIX century photographs are affected by several problems—ranging from superficial damages to asynchron…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniSettore INF/01 - InformaticaUnificationComputer scienceComputationComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONProcess (computing)020207 software engineeringStereoscopy02 engineering and technologyPhotography Computer vision algorithms Disparity map Florence Reconstruction process Semiautomatic methods Stereo pair Stereo-photographs User input Stereo image processingUser inputlaw.inventionAsynchronous communicationlawComputer graphics (images)0202 electrical engineering electronic engineering information engineering3D Stereo Historical Photographs Cultural Heritage Computer VisionComputer vision algorithms020201 artificial intelligence & image processingComputingMethodologies_COMPUTERGRAPHICSIOP Conference Series: Materials Science and Engineering
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