Thursday, March 15, 2018
Saturday, November 24, 2012
Inverse Problems book @ Springer from IPRJ/UERJ
The director of my insitute IPRJ/UERJ, Francisco Duarte Moura Neto (Ph.D. in Mathematics from Berkeley), has just published a new book at Springer entitled "An Introduction to Inverse Problems with Applications", with prof. Antonio Jose da Silva Neto (Ph.D. in Mechanical Engineering from North Carolina State University). Both are very bright researchers in the field of applied mathematics and engineering with which I have constant collaboration at the polytechnic institute.
I am very glad to be working with them, and to have helped with the book. You should really go and get the book, of which we're all really proud!
http://books.google.com/books?id=Oc8_N1PmYnYC&dq=an+introduction+inverse+problems&source=gbs_navlinks_s
Wednesday, May 09, 2012
5 bolsas do Google Summer of Code dadas ao IPRJ da UERJ
Cinco alunos ligados ao Instituto Politécnico da UERJ (IPRJ) acabam de ser selecionados pelo programa Google Summer of Code para trabalhar no desenvolvimento de melhorias para o Scilab, um importante software livre utilizado na indústria e academia.
Trata-se
de uma conquista inédita da UERJ e da computação brasileira. "Nossos
alunos realmente mereceram, mas ninguém esperava tantos aprovados de uma
só vez. Captamos quase 50% das vagas destinadas ao Scilab, um resultado
da
competência e dedicação dos nossos alunos. Acredito ser uma vitória
única e muito importante para o Brasil, que possui grande demanda de mão
de obra qualificada em programação" - Diz prof. Ricardo Fabbri, Ph.D.,
professor adjunto do IPRJ, ex-funcionário do Google e um
dos mentores oficiais do Scilab no Google Summer of
Code. Dentre os alunos selecionados pelo Scilab estão Gustavo Libotte, Marcos Cardinot, e
os irmãos Pedro Arthur e Caio Lucas dos Santos Souza, todos
do 5o. período do curso de
Engenharia de Computação do IPRJ, campus regional da UERJ em Nova
Friburgo. Quatro desses alunos irão receber a quantia de $5015,00
dólares do Google durante 3
meses e todos irão realizar o desenvolvimento de software no laboratório
de visualização do IPRJ, sem precisar deixar o país. O IPRJ também foi
especialmente contemplado com o financiamento de um quinto aluno no Google Summer of Code,
o indiano Pallan Madhavan, estudante de matemática aplicada. Madhavan
desenvolverá melhorias voltadas ao pacote SIP de processamento de
imagens do Scilab, de
autoria do prof. Fabbri.
O
Scilab é um software livre para a programação de soluções científicas e
de engenharia, amplamente utilizado na UERJ e em outras universidades
e empresas como alternativa de qualidade ao caríssimo Matlab. O
modelo de software livre tem apresentado bastante sucesso, comprovado
por grandes nomes como o navegador Mozilla Firefox, o LibreOffice (substituição oficial do Estado do Rio de Janeiro ao Microsoft Office), o sistema operacional Linux e o próprio Scilab. O
acesso ao código apresenta vantagens importantes ao meio científico e
de alta tecnologia em relação ao modelo fechado do Matlab, pois qualquer
um pode explorar o código e mesmo ser pago para realizar mudanças, como
está ocorrendo no Google Summer of Code.
Segundo o prof. Fabbri, o grupo brasileiro de programadores conhecido como LabMacambira.sf.net teve um papel chave nessas conquistas. "O ambiente colaborativo do Lab Macambira foi que originou todo esse nosso esforço, tanto que outros alunos e mentores brasileiros desse coletivo também foram aceitos no Google Summer of Code em entidades como a Mozilla e E-Cidadania -- uma sequência de conquistas que traz muita visibilidade e tecnologia ao Brasil", diz o professor do IPRJ. Os alunos, motivados pelo êxito alcançado, pretendem iniciar um grupo de programadores do IPRJ nos moldes do LabMacambira.sf.net. Com isso, pretendem complementar o curso com atividades práticas extra-curriculares além do Google Summer of Code.
Segundo o prof. Fabbri, o grupo brasileiro de programadores conhecido como LabMacambira.sf.net teve um papel chave nessas conquistas. "O ambiente colaborativo do Lab Macambira foi que originou todo esse nosso esforço, tanto que outros alunos e mentores brasileiros desse coletivo também foram aceitos no Google Summer of Code em entidades como a Mozilla e E-Cidadania -- uma sequência de conquistas que traz muita visibilidade e tecnologia ao Brasil", diz o professor do IPRJ. Os alunos, motivados pelo êxito alcançado, pretendem iniciar um grupo de programadores do IPRJ nos moldes do LabMacambira.sf.net. Com isso, pretendem complementar o curso com atividades práticas extra-curriculares além do Google Summer of Code.
Confira tambem a lista completa dos estudantes aprovados, resumos e estatisticas:
http://www.google-melange.com/ gsoc/projects/list/google/ gsoc2012
Veja o conteúdo das propostas aprovadas do IPRJ:
Veja o conteúdo das propostas aprovadas do IPRJ:
- Marcos Cardinot:http://www.google- melange.com/gsoc/proposal/ review/google/gsoc2012/ cardinot/1
- Gustavo Libotte: http://www.google-melange.com/ gsoc/proposal/review/google/ gsoc2012/gustavolibotte/1
- Caio Souza: http://www.google-melange.com/ gsoc/proposal/review/google/ gsoc2012/caioc2/1
- Pedro Souza:http://www.google- melange.com/gsoc/proposal/ review/google/gsoc2012/ grandao/1
- Pallan Madhavan: http://www.google-melange.com/ gsoc/proposal/review/google/ gsoc2012/mady902/8001
- Gustavo Libotte: http://www.google-melange.com/
- Caio Souza: http://www.google-melange.com/
- Pedro Souza:http://www.google-
- Pallan Madhavan: http://www.google-melange.com/
Veja o conteúdo das demais propostas do LabMacambira.sf.net:
Aceitos:
- Vilson Vieira (Mozilla): http://www.google-melange.com/ gsoc/proposal/review/google/ gsoc2012/automata1
Demais propostas enviadas e que permaneceram ativas:
- Renato Fabbri (Pidgin): http://www.google-melange.com/ gsoc/proposal/review/google/ gsoc2012/fabbri/1
- Daniel Penalva (Scilab): http://www.google-melange.com/ gsoc/proposal/review/google/ gsoc2012/haaksync/1
- Daniel Penalva (Scilab): http://www.google-melange.com/
Scilab:
SIP
Lab Macambira
Sunday, December 11, 2011
My made-up zen story
I spent about a decade meditating inside a cave, against a wall.
Other people were waiting for me. I left them almost burried in the cold of the snow.
Now I rise and walk. Threading lightly, steadily.
With other people, I will entertain and enjoy. I will practice more martial arts.
I hope true enlightenment will be reached through everyone, together, performing the true hacking of modern thinking machines. With these hopes I start a new stage in life.
Saturday, October 08, 2011
Ignoring Mortality We Worship Mediocrity (replay)
I am reposting one of the deepest posts in this blog (http://maverickranter.blogspot.com/2009/01/ignoring-mortality-we-worship.html):
This speech from Steve Jobs is a good inspiration for us to gain courage to be innovative and bold
In the same vein, I dedicate this song to Steve:
Bad Religion - In so Many Ways
Friday, March 18, 2011
The new Computer Vision book
Tuesday, June 29, 2010
Brown University has gone Google
Brown switched to Google apps. I mean, the entire Brown University switched to Google (students, professors, and remaining staff):
http://googleblog.blogspot.com/2010/06/brown-university-has-gone-google.html
Wednesday, March 03, 2010
CVPR 2010 paper accepted
Hi, my paper was accepted for the IEEE Conference in Computer Vision and Pattern Recognition. It is one of the major 3 conferences in my field. My paper is entitled "3D Curve Sketch: Flexible Curve-Based Stereo Reconstruction and Calibration".
Wednesday, December 30, 2009
Wednesday, November 18, 2009
Tuesday, November 17, 2009
Fixing EPS bounding box automatically
Writing a paper. Time to put Matlab or Scilab plots in. You go file->
save as EPS to include into Latex.
Surprise: Matlab has an awful bounding box space around the figure.
You want to autocrop it but its a vector graphics format,
so you can't use mogrify -trim +repage <filename> as you would normally
do with an image.
save as EPS to include into Latex.
Surprise: Matlab has an awful bounding box space around the figure.
You want to autocrop it but its a vector graphics format,
so you can't use mogrify -trim +repage <filename> as you would normally
do with an image.
Solution: epstool. It does an autocrop for the EPS file:
epstool --copy --bbox input.eps output.eps
and your final plot will still look crisp.
Another option: save as PDF in matlab. Then use ImageMagick's convert to convert it to eps:
convert file.pdf file.eps
this will keep the vector graphics intact (at least in recent versions of ImageMagick).
Of course, you can always use pdflatex instead and avoid EPS altogether.
Friday, October 02, 2009
Thursday, August 13, 2009
Website back up
My website is back after I took my server out of the lab.
www.lems.brown.edu/~rfabbri
or, during daytime, you can check:
cortex.homelinux.org
www.lems.brown.edu/~rfabbri
or, during daytime, you can check:
cortex.homelinux.org
Friday, May 29, 2009
Applets - the geometry of 2 and 3 views
These are insightful applets to introduce the concept of epipolar
geometry of two and three views.
geometry of two and three views.
http://www.ai.sri.com/~luong/research/Meta3DViewer/EpipolarGeo.html
When you press any key, you can drag the 3D point around and sense how
the geometry changes.
Thursday, May 14, 2009
More action in twitter
http://twitter.com/rfabbri
Because the iphone interfaces to twitter rock. And "twittering" to blogger using gmail — like I'm doing right now — just doesn't sound as cool.
Because the iphone interfaces to twitter rock. And "twittering" to blogger using gmail — like I'm doing right now — just doesn't sound as cool.
Tuesday, May 12, 2009
2 colors are enough
I posted another video like this a while ago, but I always get amazed at them. I can't help but think how shape and boundaries are enough for vision. I'd like to write up what's the role of the contrast sign in producing these effects. For one, the shadows being black helps a lot. The black traces the robots leave on the street make it look like it is covered in snow. Here is a simple inversion of the video (no sound so you can play them together without interference):
Shadows become highlights, and the ground seems to be covered in water instead of snow. It would be cool to have another version of the vid with only the boundaries between the black & white regions.
Monday, April 20, 2009
Google Similar Image Search
This new cool feature allow you to search for images similar to a
given image. Let's say you want to search for "apple" - how to search
only for the Apple, Inc, not the fruit?
Friday, March 13, 2009
Hispanic Immigration & Graphic Design
Here's my wife's newly designed thesis website: www.from-both-sides.org/home
Thursday, March 05, 2009
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