I sometimes have difficulty understanding issues when I'm not familiar with the particular artifact/s being discussed. Examples on the Internet centre mostly around compression artifacts but there are many others like sharpening, scaling, denoising etc. Does anyone know of some kind of video artifact library that covers most of these?
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Thread: Video artifact collection
digital noise from a camera:
hanovers bars artifact (the horizontal color stripes):
ringing noise ( see the images at the bottom page)
Have a look at the msu filters click on each one of them there are pictures / explanations