Nick Higham - The Mathematics of Digital Photography

How does a digital camera capture an image?
What is JPEG?
How can a digital image be made bigger, or smaller?
What are colour spaces and which is the best to use when editing images on a computer?
The answers to the these and related questions involve some fundamental mathematical tools---in particular, linear algebra, interpolation, nonlinear mappings, and fast transforms. I will give an overview of the mathematical aspects of digital photography, from capture through editing to output. I will conclude with some ``before and after'' examples of how mathematical thinking can help you to improve your images.

Nick's homepage
A copy of his talk is available here.
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