Posts Tagged ‘brazil’

Favela Painting by Jeroen Koolhas and Dre Urhahn in Rio de Janeiro, Brazil

Thursday, June 3rd, 2010


[Editor's note: Geometric mural painted on a neighborhood canvas. Also see Jim Denevan's Art: Three mile wide spiral YouTube video. My earlier tweet inspired Cartogrammer to find geometry charting on satellite images.]

Republished from Space Invading.

Jeroen Koolhas and Dre Urhahn are two artist from Netherlands who started working together in 2005. In 2006, they started developing the idea of creating community-driven art interventions in Brazil. Their efforts yielded two murals which were painted in Vila Cruzeiro, Rio’s most notorious slum, in collaboration with local youth. After both murals were finished, they started their third stage of their project, ‘O Morro’.

View more at Space Invading . . .

Google Massively Automates Tropical Deforestation Detection (

Friday, December 18th, 2009

[Editor's note: Perhaps Wired magazine's Google evil-meter just tipped a bit less negative? In all seriousness, this sounds like a great project!]

Republished from Dec. 11, 2009.

Land cover change analysis has been an active area of research in the remote sensing community for many years. The idea is to make computational protocols and algorithms that take a couple of digital images collected by satellites or airplanes, turn them into land­cover maps, layer them on top of each other, and pick out the places where the land cover type has changed. The best protocols are the most precise, the fastest, and which can chew on multiple images recorded under different conditions. One of the favorite applications of land cover change analysis has been deforestation detection. A particularly popular target for deforestation analysis is the tropical rain forests, which are being chain sawed down at rates which are almost as difficult to comprehend as it is to judge exactly how bad the effects of their removal will be on biological diversity, planetary ecosystem functioning and climate stability.

Google has now gotten itself into the environmental remote sensing game, but in a Google-esque way: massively, ubiquitously, computationally intensively, plausibly benignly, and with probable long-term financial benefits. They are now running a program to vacuum up satellite imagery and apply land cover change detection optomized for spotting deforestation, and for the time being targeted at the Amazon basin. The public doesn’t currently get access to the results, but presumably that access will be rolled out once Google et al are confident in the system. I have to hand it to Google: they are technically careful, but politically aggressive. Amazon deforestation is (or should still be) a very political topic.

Continue reading at . . .

Limitations on Passport Use (Wikipedia)

Monday, September 14th, 2009

[Editor's note: I dug up this interesting list of sovereign states who have passport problems at Wikipedia while working on Natural Earth.]

Most countries accept passports of other countries as valid for international travel and valid for entry. There are exceptions, such as when a country does not recognise the passport-issuing country as a sovereign state. Likewise, the passport-issuing country may also stamp restrictions on the passports of its citizens not to go to certain countries due to poor or non-existent foreign relations, or security or health risks.

Continue reading at Wikipedia . . .

The World, Justified (Strange Maps)

Wednesday, December 3rd, 2008

[Editor's note: Fun take on what the world would look like if all the land masses were jammed together and justified like text in a paragraph: left, center, and right. Thanks Noel!]

Republished from Strange Maps.

Angela Detanico and Rafael Lain are a pair of young Brazilian artists, working in their home country and in France. Some of their work explores fonts and maps. Typography meets cartography in this little work, entitled ‘The World, Justified’.

It shows the world we live in as only one of four possibilities, the others being a left-aligned, centred and right-aligned world. Our world is a justified one, i.e. aligned with both left and right margins.

One could make all sorts of geophilosophical comments about these alternate possibilities. Or about the fact that the world we live in is neither left, right nor centre, but ‘justified’. Could it really be that, as Voltaire’s Candide asserted, tout va pour le mieux dans le meilleur des mondes possibles (’Everything is for the best in the best of possible worlds’)?

Many thanks to Eric Angelini for sending in this map, found in its original context at the aforementioned artists’ website, (click on the red line).