Filter Forge - map to curve... is this even possible?

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CorvusCroax CorvusCroax Posts: 1227 Filters: 18	So, we know how to take a curve and make it into a green component... http://www.filterforge.com/filters/679.html http://www.filterforge.com/filters/1619.html Is it possible to do the same thing, but in reverse? That is, create a curve from a map (or other) input? Is that just impossible?
	Posted: January 21, 2009 11:02 pm	Details E-Mail
ThreeDee Lost in Space Posts: 1672 Filters: 112	Sounds pretty impossible. What are you trying to achieve?
	Posted: January 26, 2009 1:43 pm	Details E-Mail
ThreeDee Lost in Space Posts: 1672 Filters: 112	Okay, let's say a bit more, since nobody else has answered... For instance, if you had a fairly basic curve that you could generate by plugging the image output into curve green inputs, you could so a very rudimentary version of this, but not really the same thing in reverse.
	Posted: January 26, 2009 1:46 pm	Details E-Mail
ThreeDee Lost in Space Posts: 1672 Filters: 112	Another way to approximate this is to do what I did with the Histogram filter. You can take an image input and extract (for instance) Histogram information out of it. You could get any channel histogram approximation that way -- lightness, hue, saturation, etc. And you could blur the curve before thresholding it to smooth it out some. What you get is not a real curve, of course, but a green-component representation of a curve, like the example you have in your first post.
	Posted: April 9, 2009 3:00 am	Details E-Mail

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