Real-time Data Acquisition

in Blog

22 June 2007

Jonathan Green from the Visualisation Research Unit gives a short presentation on Real-Time Data Acquisition at the AHRC ICT Methods Network conference, 19th June 2007.

By real-time we mean that data is acquired with no noticeable delay in such a way that it is especially useful for art works and performances. We tend to develop interfaces for specific art works rather than for their own sake. However, we always ensure that they are built in a modular way so we can reuse them.

Recent projects that have involved real-time data acquisition processes

Data derived from the physical performance environment (light sensors, faders, game controllers, video cameras etc.) is distinguished from web-based data acquisition (RSS feeds, images etc). The Internet can also be used as a transport facility for data generated by sensors.

One form of data acquisition is from sensors

RSS feeds are excellent for pulling down content from the Internet using tags because it is a standards-based protocol which makes it very reliable and it is also widely used. Present Tense demonstrates the use of RSS feeds in an art work (how we did it…). Using Yahoo! Pipes, we were able to aggregate content from numerous RSS sources in a visual way.

The Networked Mashup is used as an example of how we can combine various different technologies into a single usable interface. It also shows how a networked system can be used to transport ‘sterile’, or media-inspecific, data to and from several nodes (see The Networked Mashup for a more detailed explanation). The distributed system used in the Networked Mashup has been scaled up to an Internet-based system and is being formalised into a project called CODA (Collaborative Online Digital Art).

Data Acquisition in CODA

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