site specific urban installation-intervention - thematizing the complexity around the Paulista Avenue The Avenue represents the second economic center (knot) ofthe city of São Paulo, in which the downtown is still the first important financial sector and Berrini avenue the third. The region between Paulista Av. and Berrini Av hosts the administrative headquarter offices of 46% of the Brazilian national GNP, more specifically in the quarters: Vila Madalena, Lapa, Pinheiros, Itaim, Jardins, Paulista, Moema and Campo Belo. The urban infra-structure presents 22 heliports, 40 telecommunication antennas, the flux of 1.5 million people, 100 thousand vehicles and 100 helicopter takeoffs per day. Guido Carlo Argan quotes Sausurre on his book "Art History as the History of Cities": there are no cities but "urban situations". Therefore, São Paulo consists of a complex of urban situations resulting articulated networks linking multi scenic urban territories.
The region was mapped out with a GPS device and a video camera, not casting aside the interferences of these capture systems and from the environment.  The approaching processes to these new cartographies are achieved through the new electronic devices, using as key components the mapping, the collect and analysis of this information. It is from the analysis that the measuring and indexation mechanisms generate a data bank to build complex systems of visualization, according to strategies for specific readings needs. In this sense, the habitant or user of large cities are confronted at the begin of the third millennium with the concept of "local" in line with the multiple dynamics of the flux made up from contemporaneous articulations between: global and local, macro and micro. Furthermore, dynamics stimulated by the invasion of stock markets, speculations and the implementation of large scale systems of telecommunication and transport, all under the paradigm of new technologies.Based on the collected data, the items were transformed in audiovisual elements controlled by infrared sensors, related to the flux of people in the interior of the gallery. These images were projected on the external glass façade of the gallery giving back to the urban space aesthetic constructions of its own complexity. At the same time, these images were a deconstruction of the concept of a city "on the post card". The interpretation of the "geo localization" of the gallery arose from the "Global Positioning System", which received in real time the information from a GPS device installed and fixed locally. All possible variables that the device offers were used: longitude, latitude, altitude, quantity of visible satellites, oscillations and surrounding atmospheric interferences. GPS interpreted all this information as movements although the device had always been in repose.
An ultrasound sensor was the controlling interface to measure the distance between the public and the projected image. This sensor visited layer by layer of information grab from the GPS fixed on the glass of the gallery and sent to the system via Bluetooth.
technology softwares: Isadora Macromedia Flash 8.0 Final Cut 5.0 Google Earth programming languages and codes used for the installation - serial port communication interface with the data read by Macromedia Flash (communication with USB/Arduino and Bluetooth/GPS) + FlashVideoPlayerJPG >download> license CC 3.0 |
rachel rosalen and rafael marchetti
thanks to: luis duVa teo milena sz marcus bastos priscila arantes
territorios (dot) 2334s4639w (dot) net
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heliports of the Paulista Avenue (satellite photo)  heliports of the City of São Paulo (satellite photo)  |
| representation of the network of artificial satellites orbiting around the Earth. * | |
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| * images generated from the Google Earth application information source: Stratcom - www.stratcom.mil/ |
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