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Thread: [Award Winner] Making Not so Random Coastlines in GIMP - alternative method

  1. #11
      RobA is offline
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    Sure - (and a picture or two being worth 1000 words)

    Here I started with a straight gradient, then used the curves dialog to make it into a bunch of concentric rings. This just maps the input levels to the output levels. The height on the curved line represents output intensity. (I am working here on the "value" channel, which just means brightness.) I just followed the original steps to get the final result...

    -Rob A>
    Attached Thumbnails Attached Thumbnails [Award Winner] Making Not so Random Coastlines in GIMP - alternative method-m4.jpg  
    Last edited by RobA; 04-27-2010 at 01:34 PM.

  2. #12
      Faide is offline
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    For the total GIMP newbie (Like me) I've split this process up more clearly.

    When I first looked at RobA's post I couldn't figure out most of the techniques, so I wrote this as I went along.
    I can recomend the GIMP Help Index files as they helped me to do this from RobA's descriptions.

    So here we go.

    Open new file
    Add a layer and colour it black (Ignore the background layer)
    Use the lassoo (sp?) (and shift key for more than one) to define some blobs
    Bucket fill white.
    Unselect everything
    Filters>Blur>Gaussian Blur
    Set radii to 100ish and apply

    Open a new layer below this one (Helps to make the top layer invisable)
    Filter>Render>Clouds>Solid Noise (Crank the X and Y values to max)

    Tools>Colour Tools>Levels
    Slide the grey arrow in the centre to the left a little (about 1.9) and let go. The dark areas will become greyer.

    Make the white blobs layer visable again and make it the active layer.
    In the layers dialog box is a mode option with a drop down menu, click on the multiply option.
    This should put the noise where the white bits were.
    Then merge the layers together. (Layer>Merge Down)

    Tools>Colour Tools>Threshold
    Fiddling with the black and white arrows adjusts the outlines of the shapes.
    Then press OK

    Filters>Edge Detect>Edge
    Press OK in the pop up box
    This gives you a white outline on black background.

    Layers>Colours>Invert

    This should give you a black outline on a white background.

    I hope this helps, I learned loads doing it.

    Karl
    Last edited by Faide; 10-04-2007 at 08:04 AM. Reason: A little clarification

  3. #13
      RobA is offline
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    I made a quick video tutorial and uploaded it to youtube, but I think the quality is too poor to be really useful (between the resolution decrease and the compression)....

    http://www.youtube.com/watch?v=BlYRWvpj1GE

    It is just as fast to do something like this as using screen grabs (and easier than typing up a tutorial)

    Thoughts?

    -Rob A>

  4. #14
      Faide is offline
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    RobA

    That's brilliant!

    Despite not being able to see exact details it's still incredibly helpful.

    Did it take long to make?


    Karl

  5. #15
      RobA is offline
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    Since I didn't edit the video, it didn't take that long. Just as long as typing in the text, and a couple of play-throughs to make sure the titles lined up to the actions.

    -Rob A>

  6. #16
      pyrandon is offline
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    OMG! Rob, that is incredible!!! Seriously, that didn't take long to make?? Wow--intensely helpful, clear, and all with a beat you could dance to! Thanks!
    Don
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  7. #17
      ravells is offline
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    Excellent! I'm sure there are file sharing sites which give you more bandwidth if you want more definition.

  8. #18
      Airith is offline
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    agreed great vid, doing it right now as well xD

    finished, way better than the plain text ones
    And our time is flyin', see the candle burnin' low
    Is the new world rising, from the shambles of the old
    ~The Rover - Led Zeppelin

  9. #19
      RobA is offline
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    Quote Originally Posted by RobA View Post
    I made a quick video tutorial and uploaded it to youtube, but I think the quality is too poor to be really useful (between the resolution decrease and the compression)....

    http://www.youtube.com/watch?v=BlYRWvpj1GE

    It is just as fast to do something like this as using screen grabs (and easier than typing up a tutorial)

    Thoughts?

    -Rob A>
    OK - I have gone and remixed the video and only downsized it to 800x600 now (Original was 1024x768, guess I should watch that if I do it again...) as much of the noise and compression was due to Microsoft MovieMaker.

    I also looked an an incredible number of "free" file hosting sites and video hosting sites. Revver (which seemed the most promising, and their video quality is quite good) doesn't want to allow uploads today. The rest of the video sharing sites either shrink my video, or compress it so badly that it is as bad as youtube.

    As RAH said, TANSTAAFL! and that is especially true for file hosting sites. Either they limit the download size, delay for minutes, try to infect you with spyware, or require you to install some suspicious software to use them

    Since I have my own server at home, I decided to make the full video available there. It is set up so it is not a hot-link, you will have to visit this downloader page to get the file. This lets me track the number of downloads, and make sure my usage doesn't go through the roof

    Anyway - you can find it here:
    http://ffaat.pointclark.net/blog/ind...cat=15&file=19

    And I apologize in advance for the possibly slow response of both the site and the download rate, as it only allows one downloader at a time

    -Rob A>

  10. #20
      RobA is offline
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    And I finally got it up at Revver. Still downsized, but much clear than YouTube:

    http://one.revver.com/watch/423497/flv

    -Rob A>

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