Today I spent most of the afternoon working on a presentation for the university Image Processing course, to be delivered to the students on 10 October, during the first of their project work face-to-face sessions. The lecturer asked me if I wanted to give a guest lecture as part of the session, and I agreed, thinking I could do one on the Science and Engineering of Photography.
I did an outline of the presentation, then started working on slides. This is the part that takes time, as I have to source images that can be used without violating copyright, or make my own. I got through the camera obscura, pinhole camera, what a lens does, how a camera focuses, circle of confusion, and point spread function. I still need to do slides on convolution, the Fourier convolution theorem, pupil function, optical transfer function, depth-dependent blur, aberrations, camera sensor construction, imaging noise, colour filter arrays, image demosaicing, and other post-capture image processing operations. There’s heaps more that I could go into, but I need to keep it down to about 45 minutes.
The slightly annoying thing is that I had a good presentation on exactly this stuff at work, when I used to work for Canon, which I presented a few times to other staff and to visiting interns and students. But since I made that presentation at work, it was on work machines, and I couldn’t bring it home with me. But at least after I do this, I’ll have one handy for future use. I could even adapt it for use to teach kids about how cameras work on Outschool.
This evening I made a special dinner. I’ve always liked fried cauliflower, but it’s a bit of a mess to make. But today we had most of a cauliflower left over as the remaining vegetable before grocery shopping tomorrow, so I decided to go for it. I cut it into florets, coated them in flour, egg wash, and breadcrumbs, and shallow fried them in a pan until golden brown. I served them with a mix-it-yourself set of sauce ingredients: yoghurt, tahini, sriracha, chutney, and mayonnaise. It turned out great! (Except I left a couple of pieces a bit too long before turning them and produced a bit of smoke, but fortunately it dissipated without setting the alarm off.)
New content today: