Search results for " RENDERING"
showing 10 items of 82 documents
Il Gran Caffè di Giuseppe Damiani Almeyda
2015
Il testo affronta lo studio di un’opera giovanile di Giuseppe Damiani Almeyda (1834-1911), figura di spicco del panorama architettonico in Sicilia tra la seconda metà dell’Ottocento ed i primi del Novecento. Il progetto del Gran Caffè, vincitore di prestigiosi riconoscimenti, anche se realizzato quando Damiani non era ancora trentenne, risulta molto maturo e segna una tappa importante nella formazione dell’architetto. Se ne ritroveranno richiami progettuali nel Politeama, edificio a cui il suo nome è legato, e in una grandiosa opera didattica, la Scuola Italiana di Architettura Civile, che, purtroppo, non è mai stata pubblicata. I disegni originali, a matita, inchiostro ed acquerello su car…
Il progetto di una chiesa cattedrale di Giuseppe Damiani Almeyda. Analisi delle fonti documentarie e ricostruzione congetturale
2022
La ricchissima produzione di Giusppe Damiani Almeyda (Capua 1834 – Palermo 1911) comprende, tra le sue opere giovanili il Progetto per una chiesa cattedrale, presentato all’Esposizione di Belle Arti di Palermo del 1856. Il presente studio è il frutto dell'analisi delle fonti documentarie presenti nell'Archivio Damiani di Palermo, che hanno consentito l'analisi del manufatto architettonico e la ricostruzione congetturale del modello.
Parallel macro pipelining on the intel SCC many-core computer
2013
In this paper we present how Intel's Single-Chip-Cloud processor behaves for parallel macro pipeline applications. Subsets of the SCC's available cores can be arranged as a pipeline where each core processes one stage of the overall workload. Each of the independent cores processes a small part of a larger task and feeds the following core with new data after it finishes its work. Our case-study is a parallel rendering system which renders successive images and applies different filters on them. On normal graphics adapters this is usually done in multiple cycles, we do this in a single pipeline pass. We show that we can achieve a significant speedup by using multiple parallel pipelines on t…
Importance of force feedback for following uneven virtual paths with a stylus
2021
It is commonly known that a physical textured path can be followed by indirect touch through a probe also in absence of vision if sufficiently informative cues are delivered by the other sensory channels, but prior research indicates that the level of performance while following a virtual path on a touchscreen depends on the type and channel such cues belong to. The re-enactment of oriented forces, as they are induced by localized obstacles in probe-based exploration, may be important to equalize the performance between physical and virtual path following. Using a stylus attached to a force-feedback arm, an uneven path marked by virtual bars was traversed while time and positions were measu…
Integrated prototyping and rendering system for the display of ceramic finds
2017
The project, carried out in collaboration between the Department of Architecture of Palermo and the Archaeological Museum Antonino Salinas of Palermo, proposes a system of integration and reconstruction of ceramic artefacts, using modeling, 3D printing and rendering processes for an integrated museum exhibition system, which the viewers can observe the fragment nearing the re-reconstructed fragment that reconstructs the original morphology and an interactive digital model in which the viewers can also observe the metric aspect and, where present, the decorative apparatus.
Software for automated application of a reference-based method fora posterioridetermination of the effective radiographic imaging geometry
2005
Objectives: Presentation and validation of software developed for automated and accurate application of a reference-based algorithm (reference sphere method: RSM) inferring the effective imaging geometry from quantitative radiographic image analysis. Methods: The software uses modern pattern recognition and computer vision algorithms adapted for the particular application of automated detection of the reference sphere shadows (ellipses) with subpixel accuracy. It applies the RSM algorithm to the shadows detected, thereby providing threedimensional Cartesian coordinates of the spheres. If the three sphere centres do not lie on one line, they uniquely determine the imaging geometry. Accuracy …
Regularized multiresolution spatial unmixing for ENVISAT/MERIS and landsat/TM image fusion
2011
Earth observation satellites currently provide a large volume of images at different scales. Most of these satellites provide global coverage with a revisit time that usually depends on the instrument characteristics and performance. Typically, medium-spatial-resolution instruments provide better spectral and temporal resolutions than mapping-oriented high-spatial-resolution multispectral sensors. However, in order to monitor a given area of interest, users demand images with the best resolution available, which cannot be reached using a single sensor. In this context, image fusion may be effective to merge information from different data sources. In this letter, an image fusion approach ba…
The impact of irreversible image data compression on post-processing algorithms in computed tomography
2020
PURPOSE: We aimed to evaluate the influence of irreversible image compression at varying levels on image post-processing algorithms (3D volume rendering of angiographs, computer-assisted detection of lung nodules, segmentation and volumetry of liver lesions, and automated evaluation of functional cardiac imaging) in computed tomography (CT). METHODS: Uncompressed CT image data (30 angiographs of the lower limbs, 38 lung exams, 20 liver exams and 30 cardiac exams) were anonymized and subsequently compressed using the JPEG2000 algorithm with compression ratios of 8:1, 10:1, and 15:1. Volume renderings of CT angiographies obtained from compressed and uncompressed data were compared using objec…
Studies of methods and tools for the really mixed visual coherence applied to the patrimony
2013
The work described in this report has as a target the mixed reality device ray-on, developed by the on-situ company. This device, dedicated to cultural heritage and specifically architectural heritage, is meant to be installed on-site and shows the user an uchronic view of its surroundings. As the chosen stance is to display photo-realistic images, two trails were followed: the improvement of the real-virtual merging by reproducing accurately the real lighting on the virtual objects, and the development of a real-time segmentation method which is resilient to lighting changes.Regarding lighting reproduction, an image-based rendering method is used in addition to a high dynamic range capture…
Architecture-Driven Level Set Optimization: From Clustering to Sub-pixel Image Segmentation
2016
Thanks to their effectiveness, active contour models (ACMs) are of great interest for computer vision scientists. The level set methods (LSMs) refer to the class of geometric active contours. Comparing with the other ACMs, in addition to subpixel accuracy, it has the intrinsic ability to automatically handle topological changes. Nevertheless, the LSMs are computationally expensive. A solution for their time consumption problem can be hardware acceleration using some massively parallel devices such as graphics processing units (GPUs). But the question is: which accuracy can we reach while still maintaining an adequate algorithm to massively parallel architecture? In this paper, we attempt to…