Filter Forge - GF Landscape Gen version Rocky Mountains 1.1 by Ghislaine

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DJI

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GF Landscape Gen version Rocky Mountains 1.1 by Ghislaine
http://www.filterforge.com/filters/13307.html

"Art is quite useless." Oscar Wilde

Posted: October 6, 2015 11:20 am

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DJI

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YES!

This is really wonderful stuff Ghislaine. smile:D

"Art is quite useless." Oscar Wilde

Posted: October 6, 2015 11:21 am

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CFandM

ForgeSmith

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This one came out looking good Ghislaine.. smile:)

Stupid things happen to computers for stupid reasons at stupid times!

Posted: October 6, 2015 11:33 am

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DJI

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Indeed.

You used some of the RGB Math components in this filter. I still don't understand most of that stuff. It looks like to me that you used the Derivative components to highlight the contours,yes?

"Art is quite useless." Oscar Wilde

Posted: October 6, 2015 11:55 am

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Ghislaine

Ghislaine

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Thanls all ! Glad that you appreciate this filter.

DJI, the best answer I can give you is to see the difference between the same image with and without this derivative component. That is why I use both images for the results in this filter. With derivative, the Rockies looks like more real, a better relief. You must experiment all math components to see how they work. It is so fantastic to use these nodes.

OK let me show you examples of what I mean... images tlak more than words...

The first example comes without derivative (Canyon 1 to Canyon 2 at 0 = this with the next filter as Landscape version Canyon)

visit https://gisoft.ca

Posted: October 6, 2015 1:40 pm

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Ghislaine

Ghislaine

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This one with 19 on 100 with the same image

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Posted: October 6, 2015 1:41 pm

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Ghislaine

Ghislaine

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Also with the same image, with a 100% of derivative

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Posted: October 6, 2015 1:42 pm

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Ghislaine

Ghislaine

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With the same image,but without deepness

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Posted: October 6, 2015 1:44 pm

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Ghislaine

Ghislaine

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Here again, always with the same image : no deepness with a 0 for derivative

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Posted: October 6, 2015 1:45 pm

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Ghislaine

Ghislaine

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With 19 % derivative

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Posted: October 6, 2015 1:47 pm

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Ghislaine

Ghislaine

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Here with 100 % derivative, same image

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Posted: October 6, 2015 1:47 pm

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Ghislaine

Ghislaine

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Now you can see the difference by using derivative or not. smile:)

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Posted: October 6, 2015 1:48 pm

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DJI

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Thanx for taking the time to do all the examples. smile:D

So the Derivative component is a lot like a built in contrast control. At least that's the way i'm understanding it. smile:)

Quote
DJI, the best answer I can give you is to see the difference between the same image with and without this derivative component. That is why I use both images for the results in this filter. With derivative, the Rockies looks like more real, a better relief. You must experiment all math components to see how they work. It is so fantastic to use these nodes.

Yes,you can learn a lot from working with components and reading the forums. But I wish the company that owns this software would come up with the cash and make a series of videos explaining step by step what all the components are what there for and how to use them properly. There's a lot of us out here that have no computer science training and are not programmers or professional digital artists. I've always been a very visually oriented person. If I just read about something it takes me longer to get it rather than having someone show me what the deal is. So yah,Videos,that's my vote. smile:D

"Art is quite useless." Oscar Wilde

Posted: October 6, 2015 5:33 pm

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Rachel Duim

So Called Tortured Artist

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For the time being, I'll explain what I know.

The Derivative component (with ArcTangent) can provide you with a height map. It can be used for landscapes, shading, and most notably embossing. The Derivative component can also be used with the ArcTangent2 to determine the direction of "brush strokes" for the Bomber.

The derivative that is computed in NOT in the proper range for use as a height map. The range you want is 0 to 1. To fix that, you take the result after the ArcTangent, multiply by 2, then add 0.5.

See here for more on manageable derivatives, see this post.

I agree that FF needs more documentation. I've found that PDF or HTML pages provide a better solution for documentation in the long run. Why? Videos are not easy to find things in, no index etc etc. I don't want to look through a 5 min video for one thing. And good documentation has a lot of detailed snap shots, another plus.

Sorry, Ghislaine, stole your thread for a moment smile:)

Math meets art meets psychedelia.

Posted: October 6, 2015 6:48 pm

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Ghislaine

Ghislaine

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Quote
Sorry, Ghislaine, stole your thread for a moment smile:)

DonT worry Rick, there is no problem.

And yes, there is no or not enough informations for the use of each node and the connection between them with also examples. It is very regretable. I have to find things by myself since I create filters.

I thank all members over here who have create some tuts and also snippets for help.

DJI, I'm also visual and I understand better with images than words. That is why I put here examples for you and also for others users who have difficulties to understand the way of certain nodes. smile:)

visit https://gisoft.ca

Posted: October 6, 2015 9:29 pm

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DJI

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Thanx Ghislaine and Thanx Rick for you help,I really appreciate it. smile:D

"Art is quite useless." Oscar Wilde

Posted: October 6, 2015 11:51 pm

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Ramlyn

Ramlyn