Abstraction Today
November 18, 2025
Till A. Heilmann (Media Studies, Ruhr University Bochum)
Sharpness Abstracted
The lecture gives a semi-technical introduction to and historical overview of image processing. Using the example of the Unsharp Mask, an ‘analog’ photographic filtering technique dating back to the 1930s and popularized in digital form by Adobe Photoshop in the 1990s, it will illustrate how the abstraction of pictures to numbers made possible today’s computational photography and AI-powered image synthesis.
Webinar
Date
Tuesday, November 18, 2025
6:15 to 7:45pm (CET)
About Till A. Heilmann
Till A. Heilmann is a postdoctoral researcher at the CRC Virtual Lifeworlds at Ruhr University Bochum where he is part of a project on digital image archives. His recent publications address training data for Large Language Models, historical praxeology of digital media, theories of analog media, the history of CD-ROMs, and the genealogy of image filters.
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