#DigitalArchivesDay: Anti-Aliasing Arcangel
Today is the first official Digital Archives Day. All day, archivists and conservators working in digital archives of all kinds will be sharing their work under the #DigitalArchivesDay hashtag, and blogging at dayofdigitalarchives.blogspot.com
I wanted to take a moment today to briefly talk about an innovation in digital imaging and computing that has become a frustation to many artists that have been experimenting with the web since the early years: Anti-aliasing. Put simply, anti-aliasing is a method of image processing that uses interpolation, to construct "new data points within the range of a discrete set of known data points." This is a function of digital signal processing that has many many important applications, from helping typefaces look good on screen, to making images not look odd when scaled down. The use of anti-aliasing that we are talking about here though, is quite specific: the display of resized digital images and video in web browsers. To illustrate how anti-aliasing has affected an era of web content, we will look at Cory Arcangel's "Data Diaries."
Data Diaries on Turbulence.org
In 2002, when Arcangel created "Data Diaries," if one were set the size of an image or video embedded in a web page larger than it's actual size, the browser would use nearest neighbor interpolation to display the image. In other words – if one were to embed a 50 x 50 px image or video as 100 x 100 px, each pixel would appear to double in size. This default form of nearest neighbor interpolation was exploited to aesthetic ends by many early net artists, including Cory. When Cory made Data Diaries, he rendered the original videos at the dimension of 50 x 25 px - so tiny! He embedded these videos at dimensions of 500 x 266 px ...
Zoë Salditch