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Summary of João Gomes Mota's site

Introduction

Portuguese, graduated in electrical engineering, contact

Research (Professional)

Mobile robotics, technical publications

Discoveries (Leisure)

Photography, Web design

Main site

Browse all the pages in a "framed" site

Introduction

  My name is João da Silva Gomes Mota, I'm Portuguese, born in 1970 in Lisbon, Portugal, where I live.

  I graduated in Electrical Engineering by IST-Instituto Superior Técnico, in Lisbon, with a specialisation in Telecommunications and Electronics. I'm now concluding the Master of Science in Robotics. I'm working on the Lisbon pole of the ISR-Institute for Systems and Robotics, a research unit of the IST.

  My professional interests include Mobile Robotics, reconstruction of three dimensional spaces, interfaces for remote operation and the integration of these subjects with Internet.Beyond the professional activities I'm interested in the History of Portugal,Nature walks, photography and Web design.

Contact

João Gomes Mota

Instituto de Sistemas e Robótica
Instituto Superior Técnico, Torre Norte, Piso 8
Av. Rovisco Pais
P-1049-001 LISBOA
PORTUGAL

Tel: +351.218418088
Fax: +351.218418291

e-mail: jsgm@isr.ist.utl.pt
http://lrm.isr.ist.utl.pt/jsgm

Research

 I work at the LRM-Mobile Robotics Lab, under the supervision of Professor Maria Isabel Ribeiro. My main area of research on mobile robotics developed within the scope of RESOLV project, for which I designed the laser based localisation system.

  The localisation system computes the position and orientation of a mobile robot on the plane, using a Laser Scanner to acquire a horizontal profile of the surroundings. Two algorithms were developed, the second algorithm refines the results of the first one:

1. Frame Localisation uses feature extraction and matching, without any external initial posture estimate,
2. Approximate Localisation refines an initial posture estimate, which may be supplied by external sensors, such as odometry, by the first algorithm or any other manner.

  The maximum error expected for localisation is below 3cm (1.2in) and 0.2º, in regular indoor environments such as home or offices.

Technical publications

  The publications below present the research work developed. Some are available for download.

  I also created interactive presentations for the papers I presented at conferences. I believe they are a good introduction to the papers, overcoming the constraints of paper explanations.
Note: The presentations were created for versions 4.0 or later of Netscape Navigator e Internet Explorer, or compatible and JavaScript should be enabled in order to see the dynamic content. Notwithstanding, the majority of the contents may be read with a 3.0 browser, skipping the dynamic pages.

Mobile Robot Localisation o Reconstructed 3D Models João Gomes-Mota, Maria Isabel Ribeiro Journal of Robotics and Autonomous Systems 31 (1-2) pp. 17-30, Elsevier Science, April 2000.
This is a revised and extended version of the SIRS'98 paper.
RESOLV: da Robótica à Realidade Virtual João Gomes-Mota, Maria Isabel Ribeiro V Jornadas Tecnico-Científicas, DEE, Escola Superior Tecnologia, Instituto Politécnico de Setúbal, Portugal, Abril 99. written in Portuguese
HTML paper	PostScript(.zip) paper	interactive presentation
Localisation of a Mobile Robot using the Laser Scanner on Reconstructed 3D models João Gomes-Mota, Maria Isabel Ribeiro Proceedings 3rd Portuguese Conference on Automatic Control, Coimbra, Portugal, September 1998.
PostScript(.zip) paper		interactive presentation
A Multi-Layer Robot Localisation Solution using a Laser Scanner on Reconstructed 3D Models João Gomes-Mota, Maria Isabel Ribeiro Proceedings 6th Symposium on Intelligent Robotic Systems, Edinburgh, United Kingdom, July 1998.
PostScript(.zip) paper		interactive presentation

Discoveries

Photography

  As an amateur of photography a created the following albums. The navigation aids are different from album to album. Even if you can't read the language, just follow the arrows and you'll be able to browse the pages.

Note: The albums require different versions of Netscape Navigator, Internet Explorer or compatibles. Activation of JavaScript is also required.

Album subject	Language	Date	Minimum browser	Minimum window size
Photos of Alfama, Lisbon	Portuguese	1998	4.0 recommended	640x480
EXPO'98 by night ... and also by day (in Portuguese).	Portuguese English	1998/1999	4.0 recommended	640x480
Paris la nuit ... et le matin	French with English and Portuguese notes	1999	3.0	800x600

Web design

  Through the years, I visited many Web sites, read several Web design books and on-line columns. I designed two sites, mine and the Mobile Robotics Lab's which have been improved as I acquired new skills. While learning Web Design I took a close look at the capabilities of JavaScript and Dynamic HTML (DHTML), introduced by versions 4.0 of Netscape Navigator e Internet Explorer. Below there are two experiments based on JavaScript and DHTML.

Subject	Language	Date	Minimum window size
Animation with JavaScript How to show an animated sequence on a single page. The script is explained as a tutorial.	English Portuguese	1999	640x480
Aquarium The stacking of layers introduces new and surprising effects.	-	2000	800x600
Lens How to enlarge the images presented in HTML pages, using the mouse as a magnifying lens.	English Portuguese French	2000	800x600
Lantern This lantern (spotlight) is similar to the previous one. A new room is discovered as the user moves the mouse in the scene, just like using a flashlight in a dark room.	English Portuguese	2000	800x600

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Created on 30-April-2000. Last update on 5-September-2000.