Author Topic: B&W mask, need help: fuzzy edges, or expand white parts outwards  (Read 294 times)

Offline Shigawire

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I've got this flow map that was generated by the Erosion plugin.

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The problem is that the flow lines aren't wide enough for my needs. I need to find a way to either widen them, or at least make the edges fuzzy. As you see here, the yellow measuring tape shows the width I need.

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Any tips are welcome.

Offline Shigawire

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #1 on: January 13, 2019, 05:40:48 AM »
Never mind, I eventually found a way on my own using "Intersect Underlying" :)

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Offline Oshyan

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #2 on: January 13, 2019, 06:00:53 PM »
That's definitely a creative use of Intersect Underlying. I'm not sure I'd recommend that as a general solution, so don't "count on it" for future scenes, but if it works here, that's great. :D

You can try the Colour Adjust for this kind of thing, that works sometimes, depending on how high contrast the base mask is. What you really need are min/max image operators which we don't have (the min/max scalar function nodes are not the same thing).

- Oshyan

Offline digitalguru

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #3 on: January 13, 2019, 10:03:09 PM »
Quote
What you really need are min/max image operators

That would be great to have a future version, so many times have needed to do exactly Shigawire is trying to achieve, and it would be great to do this within Terragen.

Offline Shigawire

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #4 on: January 14, 2019, 09:37:18 AM »
That's definitely a creative use of Intersect Underlying. I'm not sure I'd recommend that as a general solution, so don't "count on it" for future scenes, but if it works here, that's great. :D

You can try the Colour Adjust for this kind of thing, that works sometimes, depending on how high contrast the base mask is. What you really need are min/max image operators which we don't have (the min/max scalar function nodes are not the same thing).

- Oshyan

Interesting! Will this min-max function require a bitmap to function? I'm not using a bitmap.

Offline Oshyan

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #5 on: January 14, 2019, 06:05:50 PM »
There is no min/max function (and we don't have specific plans to implement one). But you *are* using a bitmap/raster data if you're using a mask output from the erosion plugin.

- Oshyan

Offline Shigawire

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #6 on: January 14, 2019, 07:51:05 PM »
Ok. Perhaps in a future version of TG? Sounds like it would be quite useful.

Offline Oshyan

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Re: B&W mask, need help: fuzzy edges, or expand white parts outwards
« Reply #7 on: January 14, 2019, 08:29:58 PM »
Perhaps

- Oshyan