Search results for " image processing."
showing 10 items of 2265 documents
Measuring trunk orientation with a CMOS camera: feasibility and accuracy.
2007
International audience; The purpose of this study was to develop and validate a new tool to objectively quantify trunk orientation at the bedside, especially dedicated to the measurement of the lateropulsion in acute and subacute stroke patients. We developed software to analyze 2D movement with a CMOS camera (Logitech Quickcam Pro 4000) and to calculate the orientation of a segment defined by two color markers. First, the accuracy, reproducibility and noise when measuring segment orientations were evaluated with the CMOS camera placed in different positions, and second trunk orientation was measured in static and in dynamic conditions both with a CMOS camera and with a gold standard 3D vid…
Fujisawa Sustainable Smart Town: Panasonic’s Challenge in Building a Sustainable Society
2018
La Lucha Cinematográfica entre Oriente y Occidente. Studio Ghibli versus Disney.
2020
El cine de animacion es uno de los elementos, de la cultura visual, con un impacto en la confeccion de la identidad y personalidad de quienes pertenecen a la infancia; transmitiendo y asentando en este grupo una serie de posicionamientos e ideologias que varian dependiendo del contexto geografico del que las peliculas emergen. Por un lado, se cuenta con Disney en el territorio occidental y, por otro lado, con Studio Ghibli en el sector oriental, como estudios cinematograficos de animacion punteros en la industria. Ambas se centran en los mismos temas, pero difieren en la manera de abordarlos. Ademas, se seleccionan para esta investigacion por el gran alcance mediatico que ambas suponen. Por…
Transitando la Ruptura Familiar: Una Aproximación Hacia la Coordinación de Parentalidad.
2020
El modelo tradicional de familia ha sufrido cambios durante los ultimos tiempos, existiendo un incremento de separaciones y divorcios, a la vez que un aumento en la cifra de los procesos de ruptura judicializados. En torno a dicha realidad socio-familiar, es importante garantizar el derecho fundamental de los menores a relacionarse adecuadamente tanto con su padre como con su madre manteniendo todos sus vinculos. Ello se debe a que el problema surge no por el hecho de que los progenitores decidan poner fin a su vida en comun, sino cuando se hace participes a sus hijos de los conflictos que ha generado la separacion o divorcio. Dichos procesos de ruptura familiar con alta conflictividad supo…
Cell state prediction through distributed estimation of transmit power
2019
Determining the state of each cell, for instance, cell outages, in a densely deployed cellular network is a difficult problem. Several prior studies have used minimization of drive test (MDT) reports to detect cell outages. In this paper, we propose a two step process. First, using the MDT reports, we estimate the serving base station’s transmit power for each user. Second, we learn summary statistics of estimated transmit power for various networks states and use these to classify the network state on test data. Our approach is able to achieve an accuracy of 96% on an NS-3 simulation dataset. Decision tree, random forest and SVM classifiers were able to achieve a classification accuracy of…
Optimizing Query Perturbations to Enhance Shape Retrieval
2020
3D Shape retrieval algorithms use shape descriptors to identify shapes in a database that are the most similar to a given key shape, called the query. Many shape descriptors are known but none is perfect. Therefore, the common approach in building 3D Shape retrieval tools is to combine several descriptors with some fusion rule. This article proposes an orthogonal approach. The query is improved with a Genetic Algorithm. The latter makes evolve a population of perturbed copies of the query, called clones. The best clone is the closest to its closest shapes in the database, for a given shape descriptor. Experimental results show that improving the query also improves the precision and complet…
Dynamic Functional Connectivity Captures Individuals’ Unique Brain Signatures
2020
Recent neuroimaging evidence suggest that there exists a unique individual-specific functional connectivity (FC) pattern consistent across tasks. The objective of our study is to utilize FC patterns to identify an individual using a supervised machine learning approach. To this end, we use two previously published data sets that comprises resting-state and task-based fMRI responses. We use static FC measures as input to a linear classifier to evaluate its performance. We additionally extend this analysis to capture dynamic FC using two approaches: the common sliding window approach and the more recent phase synchrony-based measure. We found that the classification models using dynamic FC pa…
Generating Executable Code from High-Level Social or Socio-Ecological Model Descriptions
2019
Agent-Based Modelling has been used for social simulation because of the several benefits it entails. Social models are often constructed by inter-disciplinary teams that include subject-matter experts with no programming skills. These experts are typically involved in the creation of the conceptual model, but not the verification or validation of the simulation model. The Overview, Design concepts, and Details (ODD) protocol has emerged as a way of presenting a model at a high level of abstraction and as an effort towards improving the reproducibility of Agent-Based Models (ABMs) but it is typically written after a model has been completed. This paper reverses the process and provides non-…
A Hybrid Architecture for Tiered Storage with Fuzzy Logic and AutoML
2020
The explosion of storage needs pauses a multifaceted challenge for organizations, not only it exerts a large pressure on precious resources, but also creates a sub-optimal data environment where the noise level may overwhelm the actual signal. However, despite the economies of scale achieved by major cloud platforms, the fundamental issue of storage optimization did not go away.
Reverse-safe data structures for text indexing
2021
We introduce the notion of reverse-safe data structures. These are data structures that prevent the reconstruction of the data they encode (i.e., they cannot be easily reversed). A data structure D is called z-reverse-safe when there exist at least z datasets with the same set of answers as the ones stored by D. The main challenge is to ensure that D stores as many answers to useful queries as possible, is constructed efficiently, and has size close to the size of the original dataset it encodes. Given a text of length n and an integer z, we propose an algorithm which constructs a z-reverse-safe data structure that has size O(n) and answers pattern matching queries of length at most d optim…