Generic system for human-computer gesture interaction: applications on sign language recognition and robotic soccer refereeing

Hand gestures are a powerful way for human communication, with lots of potential applications in the area of human computer interaction. Vision-based hand gesture recognition techniques have many proven advantages compared with traditional devices, giving users a simpler and more natural way to communicate with electronic devices. This work proposes a generic system architecture based in computer vision and machine learning, able to be used with any interface for human-computer interaction. The proposed solution is mainly composed of three modules: a pre-processing and hand segmentation module, a static gesture interface module and a dynamic gesture interface module. The experiments showed that the core of visionbased interaction systems could be the same for all applications and thus facilitate the implementation. For hand posture recognition, a SVM (Support Vector Machine) model was trained and used, able to achieve a final accuracy of 99.4%. For dynamic gestures, an HMM (Hidden Markov Model) model was trained for each gesture that the system could recognize with a final average accuracy of 93.7%. The proposed solution as the advantage of being generic enough with the trained models able to work in real-time, allowing its application in a wide range of human-machine applications. To validate the proposed framework two applications were implemented. The first one is a real-time system able to interpret the Portuguese Sign Language. The second one is an online system able to help a robotic soccer game referee judge a game in real time.

Step towards multiplatform framework for supporting pediatric and neonatology care unit decision process

Children are an especially vulnerable population, particularly in respect to drug administration. It is estimated that neonatal and pediatric patients are at least three times more vulnerable to damage due to adverse events and medication errors than adults are. With the development of this framework, it is intended the provision of a Clinical Decision Support System based on a prototype already tested in a real environment. The framework will include features such as preparation of Total Parenteral Nutrition prescriptions, table pediatric and neonatal emergency drugs, medical scales of morbidity and mortality, anthropometry percentiles (weight, length/height, head circumference and BMI), utilities for supporting medical decision on the treatment of neonatal jaundice and anemia and support for technical procedures and other calculators and widespread use tools. The solution in development means an extension of INTCare project. The main goal is to provide an approach to get the functionality at all times of clinical practice and outside the hospital environment for dissemination, education and simulation of hypothetical situations. The aim is also to develop an area for the study and analysis of information and extraction of knowledge from the data collected by the use of the system. This paper presents the architecture, their requirements and functionalities and a SWOT analysis of the solution proposed.

Caso de demonstração de uma framework para automatização do teste de APIs de aplicações SaaS

Dissertação de mestrado integrado em Engenharia e Gestão de Sistemas de Informação

Hand gesture recognition system based in computer vision and machine learning: Applications on human-machine interaction

Tese de Doutoramento em Engenharia de Eletrónica e de Computadores

BIOMedical search engine framework: lightweight and customized implementation of domain-specific biomedical search engines

The Smart Drug Search is publicly accessible at http://sing.ei.uvigo.es/sds/. The BIOMedical Search Engine Framework is freely available for non-commercial use at https://github.com/agjacome/biomsef

Frame-coherent 3D stippling for non-photorealistic computer graphics

Stipping, non-photorealistic rendering, non-photorealistic computer graphics

Disseny i implementació d'un marc de treball (framework) de presentació per aplicacions J2EE : Jewel Framework

El present projecte tracta sobre el desenvolupament d'un marc de treball o framework per la capa de presentació d'aplicacions J2EE.En un primer bloc, s'analitzen els frameworks més utilitzats al món empresarial a dia d'avui: Struts 2, Spring MVC i JavaServer Faces. S'estudia com funcionen i les característiques principals de cada un, comparant-les per veure quines són comuns a tots i es consideren imprescindibles per un framework d'aquest tipus. A més, es fa un anàlisi exhaustiu dels patrons J2EE i les bones pràctiques que poden aportar al projecte.El segon bloc del projecte és el desenvolupament de Jewel Framework, el marc de treball que s'ha creat. Primer, s'analitza quines són les funcionalitats que ha de complir el framework i es fa un disseny de l'arquitectura i estructura que segueix. Després, s'implementa seguint el disseny i tenint cura que es compleixin tots els requisits, tant funcionals com de qualitat del producte. Finalment, es dissenya i desenvolupa una aplicació d'exemple que demostra la usabilitat i bon funcionament de Jewel.

ServEngine : Framework pel desenvolupament de serveis en línia

En aquest projecte es desenvoluparà ServEngine, un framework per al desenvolupament de serveis de portals, comunitats virtuals i sistemes de comerç electrònic basat en el patró MVC i, com s'elegirà més endavant després d'un procés d'anàlisi i comparació, utilitzant Struts com a base de desenvolupament.

J2EE Framework capa de presentación

El present projecte se centra en la creació d'un framework1 per a la capa de presentació de java J2EE2, així com un generador de codi de suport a aquest.

Disseny i implementació d'un marc de treball (framework) de presentació per aplicacions J2EE

En aquest projecte he dissenyat i implementat un marc de treball (framework) de presentació per aplicacions J2EE. Avui en dia, per desenvolupar aplicacions web, estem obligats a que segueixin una sèrie de qualitats per tal de fer-les útils. Aquestes són eficiència, extensibilitat, reutilització i portabilitat. De no ser així, el nostre programari no tindrà lloc al mercat. Per tal d' aconseguir aquestes qualitats, cal seguir les regles establertes i utilitzar frameworks.

Diseño e implementación de un framework de presentación para J2EE

Diseño de d'jNeko, un framework basado en acciones para la capa de presentación de aplicaciones J2EE.

An information theoretic framework for image segmentation

In this paper, an information theoretic framework for image segmentation is presented. This approach is based on the information channel that goes from the image intensity histogram to the regions of the partitioned image. It allows us to define a new family of segmentation methods which maximize the mutual information of the channel. Firstly, a greedy top-down algorithm which partitions an image into homogeneous regions is introduced. Secondly, a histogram quantization algorithm which clusters color bins in a greedy bottom-up way is defined. Finally, the resulting regions in the partitioning algorithm can optionally be merged using the quantized histogram

Electronic voting system for computer supported collaborative learning

The EVS4CSCL project starts in the context of a Computer Supported Collaborative Learning environment (CSCL). Previous UOC projects created a CSCL generic platform (CLPL) to facilitate the development of CSCL applications. A discussion forum (DF) was the first application developed over the framework. This discussion forum was different from other products on the marketplace because of its focus on the learning process. The DF carried out the specification and elaboration phases from the discussion learning process but there was a lack in the consensus phase. The consensus phase in a learning environment is not something to be achieved but tested. Common tests are done by Electronic Voting System (EVS) tools, but consensus test is not an assessment test. We are not evaluating our students by their answers but by their discussion activity. Our educational EVS would be used as a discussion catalyst proposing a discussion about the results after an initial query or it would be used after a discussion period in order to manifest how the discussion changed the students mind (consensus). It should be also used by the teacher as a quick way to know where the student needs some reinforcement. That is important in a distance-learning environment where there is no direct contact between the teacher and the student and it is difficult to detect the learning lacks. In an educational environment, assessment it is a must and the EVS will provide direct assessment by peer usefulness evaluation, teacher marks on every query created and indirect assessment from statistics regarding the user activity.

A Formal Framework for Specifying, Reusing and Implementing Learning Processes. First level

This file contains the ontology of patterns of educational settings, as part of the formal framework for specifying, reusing and implementing educational settings. Furthermore, it includes the set of rules that extend the ontology of educational scenarios as well as a brief description of the level of patters of such ontological framework.

A Formal Framework for Specifying, Reusing and Implementing Educational Settings. Third level

Aquest fitxer conté la ontologia que descriu un metamodel de l'especificació Open Service Interface Design v.2.0 proposada per OKI. Ha estat creada en OWL i estesa amb un conjunt de regles SWRL. S'adjunta també el conjunt de regles.