Search results for " Images."
showing 10 items of 193 documents
«Per lo più senza desideri e un poco infelici». Ritratto della madre perduta in Wunschloses Unglück di Peter Handke
2020
In this work Wunschloses Unglück is read as if it were an impressionistic biography in images. The tale was born out of an attempt to give Handke’s fifty-year-old mother, who died of suicide, back a story and an identity. A way to give content and contours to the woman and to neutralize the depersonalizing effect of the news of the event in the pages of the local newspaper. The story of the mother is actually, from the very beginning, a reflection of the writer on his own work, on the difficulty of writing ‘true’ stories, on the tormented search for a precarious balance between description and documentation, between narration and image, between truth and fiction. Handke would seem to be gui…
Tecnologie digitali per la visibilità del patrimonio culturale. L'immagine di Tarragona nella prospettiva dell'offerta
2023
This work aims to contribute to the debate on the role of new technologies in the process of urban image construction, presenting as a case study the digital offering of the UNESCO site of Tarragona. Inclusion on the World Heritage List may represent a decisive event in the definition of an urban image, which new technologies can promote and project to the outside world. By making the winning narrative visible, technologies offer spaces for tourist desire and consumption and show us how cities are told by highlighting some aspects and excluding others. After explaining the dynamics of the context under study, the paper demonstrates how digital tools can convey a brand, mediate or transfigur…
Gestalt Theory, Data Decomposition and Functional Architecture in Visual Neuroscience
2013
Attempts to introduce Gestalt theory into the realm of visual neuroscience are discussed on both theoretical and experimental grounds. To define the framework in which these proposals can be defended, this paper outlines the characteristics of a standard model, which qualifies as a received view in the visual neurosciences, and of the research into natural images statistics. The objections to the standard model and the main questions of the natural images research are presented. On these grounds, this paper defends the view that Gestalt psychology and experimental phenomenology provide a contribution to the research into perception by the construction of phenomenological models for an ecolo…
Disease Biomarkers: Modelling MR Spectroscopy and Clinical Applications
2012
Clinical MRS has become a reference technique for in vivo evaluating the metabolism of different tissues, with special application to brain and prostate lesion characterization and tumour’s follow-up. It allows detecting relevant changes that cannot be appreciated in the conventional MR images. Nowadays, MRS has been widely applied in many different brain pathologies with excellent results as a disease biomarker. Since the different diseases and grades have different manifestations in the spectroscopic profile, a deep understanding of the subjacent biology is needed for the signal interpretation. The development of high-field (≥3 T) scanners has permitted the acquisition of high-quality MRS…
An attention-based weakly supervised framework for spitzoid melanocytic lesion diagnosis in whole slide images
2021
[EN] Melanoma is an aggressive neoplasm responsible for the majority of deaths from skin cancer. Specifically, spitzoid melanocytic tumors are one of the most challenging melanocytic lesions due to their ambiguous morphological features. The gold standard for its diagnosis and prognosis is the analysis of skin biopsies. In this process, dermatopathologists visualize skin histology slides under a microscope, in a highly time-consuming and subjective task. In the last years, computer-aided diagnosis (CAD) systems have emerged as a promising tool that could support pathologists in daily clinical practice. Nevertheless, no automatic CAD systems have yet been proposed for the analysis of spitzoi…
Multispectral images-based background subtraction using Codebook and deep learning approaches
2020
This dissertation aims to investigate the multispectral images in moving objects detection via background subtraction, both with classical and deep learning-based methods. As an efficient and representative classical algorithm for background subtraction, the traditional Codebook has first been extended to multispectral case. In order to make the algorithm reliable and robust, a self-adaptive mechanism to select optimal parameters has then been proposed. In this frame, new criteria in the matching process are employed and new techniques to build the background model are designed, including box-based Codebook, dynamic Codebook and fusion strategy. The last attempt is to investigate the potent…
Salient Pixels and Dimensionality Reduction for Display of Multi/Hyperspectral Images
2012
International audience; Dimensionality Reduction (DR) of spectral images is a common approach to different purposes such as visualization, noise removal or compression. Most methods such as PCA or band selection use either the entire population of pixels or a uniformly sampled subset in order to compute a projection matrix. By doing so, spatial information is not accurately handled and all the objects contained in the scene are given the same emphasis. Nonetheless, it is possible to focus the DR on the separation of specific Objects of Interest (OoI), simply by neglecting all the others. In PCA for instance, instead of using the variance of the scene in each spectral channel, we show that i…
Pictures of Nature. Mineral Imagery in Modern French Aesthetics
2016
Thus, from antiquity to the twentieth century, figured stones have changed so many times their ontological status. They were considered collectibles, emblems of prodigiousness or of curiosity; they have been interpreted as works of art attributed to nature or to a supreme creator, in competition with the works of the artists; they were finally gazed at as case or guardians of a secret revealed in the underground and overt (at the meantime) „stone writing”. This study is devoted to the forms of mineral imagery. It is interested in enlightening the contacts between visual arts and arts of speech, between sensitive image and immaterial images, and the difficult journeys, and the indispensable …
BEFORE THE EARTHQUAKE: RECONSTRUCTION AND PRESENTATION OF LOST SITES AND BUILDINGS
2021
Abstract. The paper presents the results of a research aiming at proving the efficacy of perspective restitution from photos for the reconstruction of buildings and sites that disappeared in the past century. The case study is the town of Messina, sited at the north-eastern corner of Sicily (Italy), facing the homonymous strait that divides Sicily from the Italian peninsula; in 1908 Messina and Reggio Calabria, at the opposite side of the strait, were levelled to the ground by a powerful earthquake, followed by a tsunami.No building or monument survived the destruction: a new town with the same name took the site of Messina. Except for few strongly reshaped buildings, the memory of the stre…
Canopy Architecture Appraisal by Fractal Dimension of 'Flordastar' Peach Trees Grafted onto Different Rootstocks
2007
The objective of this research was to evaluate the modification of canopy architecture of ''Flordastar'' peach (Prunus persica L. Batsch) grafted onto rootstocks with different vigour, by the use of fractal dimension (D). The hypothesis was that different vigour rootstocks are able to modify the complexity of the branching pattern and that this effect can be assessed by a geometric parameter such as the fractal dimension (D) of the 2D projection of tree branching structure. The observations were carried out in a four-year-old experimental orchard of cv. ''Flordastar'' peach trees grafted onto Ishtara, Barrier, GF677 and MrS 2/5 rootstocks. On digital pictures of leafless, dormant peach tree…