The question https://dsp.stackexchange.com/questions/24108/what-are-hot-research-topics-in-computer-vision-and-image-processing-for-phd-res doesn't seem appropriate on two accounts:

  1. It is too vast as well as too vague to define "What is HOT" in DSP.
  2. .. but more importantly it is also more of a concern to how to choose subject (which could be so for variety of reasons) but doesn't discuss actual DSP issues.

Should this be closed?

or DO we entertain such questions?

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