Meet the GIMP #100: Windtunnels and Tonal Ranges

Posted in Graphics on May 07, 2009

Meet the GIMP #100: Windtunnels and Tonal Ranges

I wanted to do something special - for example an interview with Sven Neumann. But he has had no time - you’ll hear about it in the video.

But I could help out a bit with a scientific project - finding out how much a airplane wing bends in a wind tunnel. This is still work in progress, you can follow it here.

You can find the cross stitch script in the forum.

And then we have a new script out of our secret Script Writers Guild. It’s the tonal range relection script and it can do some very weird stuff. And either Bert has bugged my computer or can read minds - he included the stuff I wanted to have without having seen the video.


00:20 Show 100!
01:00 Congratulations to Sven Neumann!
04:10 The problem - measure wing deformation
06:20 The images
07:00 Stacking images in layers
07:30 Aligning the images
12:20 Cropping
12:50 Saving as XCF
13:20 Calibrating the setup
14:30 Measurement tool
15:20 Making a grid
17:00 Putting lines on the wing tips
19:30 Making a grid with horizontal lines
20:30 Turning the grid into a ruler
21:10 Beware of wrong selections
22:10 Pintin straigth lines
24:30 Save each layer as JPEG
26:20 Recap
28:00 Happy Birthday!
29:30 Cross stich script
30:30 Tonal range selection script
32:20 Simple DRI/HDR with the script
33:10 Installing the script
34:50 Testing the script
43:20 Wrapping up the script
44:50 Selection instead of new layer
46:00 Good bye and spread the word!

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Tags: Design, GIMP, Meet the GIMP, Broadcasting, Screencasts, measurement