Archive for date: August 12, 2009

Volume Rendering: Going boldly where all have gone before…

August 12, 2009 | Computer Graphics | By: Mark VandeWettering

Okay, this is a bit gruesome, but I’ve been dusting off some old papers that I never really understood on Fourier Volume Rendering, and testing my understanding by writing some simple code that takes in a volume dataset and uses the fast Fourier transform to convert it into simulated X-ray pictures. The data set that […]

WSPR signals heard from E51EME

August 12, 2009 | General | By: Mark VandeWettering

I still check my WSPR station logs each morning when I wake up. This morning I spotted the callsign E51EME, coming from grid square BG08. I’ve come to realize that many of these spots which include only a four element grid designator are spurious bad decodes, and I didn’t recognize the prefix (I’m not much […]