Pedro M. B. Torres

Learn More
Three-dimensional reconstruction of images is a fundamental procedure in medical imaging because it allows to build virtual models of anatomical units of the human body, useful in several areas, such as in surgical navigation. This paper presents a non freehand Ultrasound acquisition system for human femur reconstruction where the probe displacement and(More)
Intelligent Robots can take advantage of a distributed, web-based information system deployed in the cloud to perform high level tasks. This paper proposes a robotic control framework suited to be used by low-cost robots, performing teloperated and/or autonomous tasks. The first part is dedicated to the development of an Android based robot control(More)
The objective of this study was to analyze the current views of Portuguese executives on key performance aspects of the e-business interaction. Based on the factor analysis procedure, a thirteen-factor solution was obtained, explaining 73.5 percent of the total variance. According to our interpretation of the factors, the following dimensions emerged:(More)
This paper presents the integration between the Image Guided Surgery Toolkit (IGSTK) and the Point Cloud Library (PCL) to deliver a software tool (SWT) to robotic orthopedic surgery. The application that demonstrates the usefulness of the tool was developed for the registration of 2D ultrasound (US) images of the femur to 3D point clouds obtained from CT or(More)
In this paper, evolving takagi-sugeno fuzzy models are applied to model a dynamic system, e.g. a six degrees of freedom robotic manipulator. In recent years the dynamic model was obtained off-line, but when the robot performs tasks away from the modeled workspace, it fails in achieve the goal. Then, the models must evolve when the robot moves to a(More)
The effect of preexposure to visual stimuli on subsequent discrimination was studied in 17 girls and 23 boys, ages 53 to 61 mo., using a test in which a sample stimulus had to be identified from a set of comparison stimuli. Preexposure significantly facilitated discrimination. This facilitation was more noticeable between stimuli which shared a large(More)
  • 1