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I don't follow. How are they not filtering? edit: I see other comments point to instagram. I think that is giving insta way to much credit. This is filtering a
by tokai 6y ago
I don't follow. How are they not filtering?
edit: I see other comments point to instagram. I think that is giving insta way to much credit. This is filtering as in signal processing. It's a common term in audio, image, and video processing.
https://en.wikipedia.org/wiki/Filter_(signal_processing) https://en.wikipedia.org/wiki/Filter_(signal_processing)
- siltpotato 6y agoFilter means to remove, not to add. Like `filter()` in Python or Swift being given a condition and a list and returning everything that meets the condition.
- contravariant 6y agoI reckon filters were initially intended to remove specific frequencies/noise and the term grew from there. Which is how ffmpeg and other software ended up with video filters that don't actually remove anything. Someone else mentioned lens filters as a possible source for the term but I'm pretty sure the signal processing term is at least partially responsible for the current usage.
- Sharlin 6y agoIn image processing "filtering" has for over 30 years meant any algorithmic manipulation of an image as a whole (exhibit A: Photoshop's "Filters" menu). Simplest filters are also filters in the signal processing sense, but the meaning in this context is considerably broader than that.
- csours 6y agoI ran into something similar with maven builds today. Filtering resources with maven means replacing text in the resource with text from maven properties.
- palencharizard 6y agoSo we should be calling these "face mappers" then >:D