Is there a name that these upscaled releases fall under to easily find them? Star Trek in particular (I was watching voyager yesterday) the quality is always p

Is there a name that these upscaled releases fall under to easily find them? Star Trek in particular (I was watching voyager yesterday) the quality is always pretty depressing when shown on a larger TV. Been recently thinking about trying to find the best quality I can find but it is always a lot of trial and error. But if there is a common name and tag I could look for that would be great.