Robotic Vision
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Easy, reproducible extraperitoneal pelvic access for robot - assisted radical prostatectomy
ABSTRACT Robot - assisted radical prostatectomy is commonly performed transperitoneally (tRARP), although the extraperitoneal (eRARP) approach is a safe and effective alternative that may be preferred in certain situations. We developed a novel method of direct access into the space of Retzius with a visual obturator port (Visiport™) for laparoscopic or ro
Int. braz j urol.. Publicado em: 2019-01
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2. Editorial Comment: Step-by-step Laparoscopic Vesiculectomy for Hemospermia
In this video Mello et al. (1), the authors highlight the clinical merit of step-step laproscopic vesiculectomy for hemospermia. The authors adopt a robotic minimally invasive surgery to the realm of seminal vesiculectomy, which was first highlighted by Kavoussi et al. in 1993 (2). It depicts an easy step-by step approach and nicely demonstrates how to mange
Int. braz j urol.. Publicado em: 2017-08
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3. Robotic repair of vesicovaginal fistula - initial experience
ABSTRACT Objective The most common acquired fistula of the urinary tract is Vesicovaginal fistulae (VVF) (1) posing social stigmata for the patient as well as a surgical challenge for the urologist. Here we present our initial experience with Robotic assisted laparoscopic repair of VVF, its safety and efficacy. Materials and Methods Seven out of eight fi
Int. braz j urol.. Publicado em: 2016-02
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4. Robotic transmesocolonic Pyelolithotomy of horseshoe kidney
Introduction The purpose of this video is to demonstrate the use of the robot to perform a transmesocolonic pyelolithotomy of a horseshoe kidney. Materials and Methods A 35-year old female presented with vague abdominal pain. CT scan imaging revealed the presence of a left horseshoe kidney with multiple pelvicalyceal stones. The patient was positioned in th
Int. braz j urol.. Publicado em: 2015-02
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5. Uma aplicação de navegação robótica autônoma através de visão computacional estéreo / Autonomous application of robotic navigation using computer stereo vision
O presente trabalho descreve uma técnica de navegação autônoma, utilizando imagens estereoscópicas de câmeras para estimar o movimento de um robô em um ambiente desconhecido. Um método de correlação de pontos em imagens unidimensionais é desenvolvido para a identificação de pontos homólogos de duas imagens em uma cena. Utilizam-se métodos de s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2010
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6. NLOOK: a computational attention model for robot vision
The computational models of visual attention, originally proposed as cognitive models of human attention, nowadays are being used as front-ends to some robotic vision systems, like automatic object recognition and landmark detection. However, these kinds of applications have different requirements from those originally proposed. More specifically, a robotic
Journal of the Brazilian Computer Society. Publicado em: 2009-09
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7. Appearance-based odometry and mapping with feature descriptors for underwater robots
The use of Autonomous Underwater Vehicles (AUVs) for underwater tasks is a promising robotic field. These robots can carry visual inspection cameras. Besides serving the activities of inspection and mapping, the captured images can also be used to aid navigation and localization of the robots. Visual odometry is the process of determining the position and or
Journal of the Brazilian Computer Society. Publicado em: 2009-09
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8. COMPARAÇÃO ENTRE CONTROLES LOOK-AND-MOVE E SERVO-VISUAL UTILIZANDO TRANSFORMADAS SIFT EM MANIPULADORES DO TIPO EYE-IN-HAND / COMPARISON BETWEEN LOOK-AND-MOVE AND VISUAL SERVO CONTROL USING SIFT TRANSFORMS IN EYE-IN-HAND MANIPULATOR SYSTEMS
Computer vision can be used to calibrate and self-localize robots. There are many applications in self-localization and control applied to industrial manipulators and mobile robots. In particular, visual control can be useful in submarine interventions, where a robotic manipulator is mounted on a Remote Operated Vehicle (ROV) to execute tasks at high depths,
Publicado em: 2009
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9. Use of Kalman filter and computational vision for the correction of uncertainties in the navigation of autonomous robots / Uso de filtro de Kalman e visão computacional para a correção de incertezas de navegação de robos autonomos
The work establishes a collection of procedures for image based navigation control of an autonomous robot. Intensity maps obtained from cameras are transformed in depth maps, which provide information about the robot s localization in an environment, comprised of distinct objects. A two wheeled, differential powered robot model is used, allowing the navigati
Publicado em: 2008
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10. Análise comparativa de algoritmos de correlação local baseados em intensidade luminosa. / Comparative analysis of intensity based local correlation algorithm.
Este trabalho apresentou uma análise comparativa de algumas técnicas de correlações locais baseadas em intensidade luminosa, as quais são: Soma das Diferenças Absolutas, Soma dos Quadrados das Diferenças, Correlação Cruzada Normalizada, Transformada Rank e Transformada Censo. Para as comparações foram adotadas imagens estéreos disponíveis em rep
Publicado em: 2008
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11. Arquitetura pipeline reconfigurável através de instruções geradas por programação genética para processamento morfológico de imagens digitais utilizando FPGAs / Reconfigurable pipelined architecture through instructions generated by genetic programming for morphological image processing using FPGAs
Mathematical morphology supplies powerful tools for low level image analysis, with applications in robotic vision, visual inspection, medicine, texture analysis and many other areas. Many of the mentioned applications require dedicated hardware for real time execution. The task of designing manually morphological operators for a given application isnot alway
Publicado em: 2008
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12. Estimação de posição e quantificação de erro utilizando geometria epipolar entre imagens. / Position estimation and error quantification using epipolar geometry between images.
Position estimation is the direct result of scene reconstruction, one of computer visions fields. It is also an important information for the control of mechanical systems - specially the autonomous robotic systems. As an engineering application, those systemsperformance must be evaluated in terms of efficiency and effectiveness, measured by processing costs
Publicado em: 2007