The following post is pretty technical, so I posted it to my technical blog so as not to bore you, but if you are interested, I’m sure you enjoy it!
Once upon a time I started to write a post about some night astrophotography I made and before I could post it, the whole thing blew up into an excruciatingly long and technical exposé. This is thus the first post in a series on what I call computational photography, one of my favorite activities with my camera.
I can’t help it – I’m an engineer (yes, you’re born that way, and yes, this Dilbert cartoon is exactly how it goes down in the ER).
What this means is that when I take a picture with my camera, I see numbers. Today’s discussion is about the difference between wanted and unwanted numbers. In this case, we will call the wanted numbers a signal, and the unwanted numbers noise. These are terms from the world of signal processing, which is oh so exciting!
Okay, what is noise and why…
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