Category Archives: Gimp video tutorial

Episode 180: Not for Grown Ups!

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Tuxpaint is a painting software for kids between 3 and 100+. Well, the targeted audience ends at an age of 12, but it is still fun to use when you are older. Tuxpaint is available for Linux, Mac OS X and all Windows flavours. Of course it is under the GPL and so free to get and to be shared. The ease of use beats everything I have seen in the professional educational market and I am considering to get it into my school.

The user interface and availability of tools in Tuxpaint can be configured to adapt to the skill level of the user and the level of annoyance the environment is willing to tolerate. There are nice sound effects, but how often can you stand

“QUAAAAAAAKQUAAAAAAAKQUAAAAAAAK DUCK”?

Also printing can be disabled because space on the fridge and ink cartridges have limits. The configuration is done with a separate program which can be kept outside of the reach of the little end-user.

The show starts and ends with some information about the upcoming GIMP Magazine. I am somehow involved in the team now but I promise to keep my priorities on this project here.

And then there is an invasion of goats int GIMP and 16 bits and more are in reach.

If you want to become a member of the forum, just drop me a mail at info@meetthegimp.org and tell me your intended user name.

The TOC

01:00 GIMP Magazine
02:00 Goat Invasion – GIMP will get a lot of progress soon
03:00 16 and 32 Bit already running in the Goat Invasion branch
05:10 Tuxpaint
05:55 Setting Tuxpaint up
09:00 The Toolset
10:00 Painting and brushes
11:10 Lines
11:45 New canvas
12:20 Shapes
13:35 Stamps
16:40 Text
17:30 Magic! (scripts and filters in a mixed bag)
20:20 Saving and recovering images
20:40 Templates for coloring
22:50 GIMP Magazine

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 179: Corners and Edges

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I am on my way to a class trip an so you get only a short episode about the corners and edges around the canvas. There is a menu button, a zoom mode button, a navigator and the quick mask for selections. And of course there are the rulers with the guides and control points to pull out.

All this after a quick update on the histogram from the last show.

Sorry, no TOC, it’s too late now….

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 178: Lurking in the Shadow

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Download the companion file! (27.4MB)
You are in for a night-time trip to one of the most secret places on the earth – until 23 years ago. The former Stasi headquarter is only 2 subway stations east of my home and I quite like the morbid, spooky atmosphere there. It’s a really huge areal, lots of office space and other buildings. Some of them are used as a museum and as the archive for all the Stasi files. Others are rented out or are simply empty.
My image missed some details in the shadows. I used a modified “burn with a layer in Overlay Mode” technique to get a bit of light into them. Instead of painting on the layer I used the L-part of the LAB colour model. I got the idea for this from the Darktable Blog.

UPDATE Mar 18: There is a nice way to use the histogram with selections. Select the dark region and look at the histogram – it shows only the data from the selection. The histogram tool is “selection-sensitive”.

Thanks to GIMPel for the tip.

The TOC

00:30 The Stasi Headquarter
05:00 Start of the image processing
05:20 Rotate the image – what is vertical?
08:00 Cropping
09:40 Planning where to work on the shadows
10:00 Measure the darkness with curves tool
10:45 A quick try with the curves tool
11:30 A layer in Overlay Mode to brighten shadows up
12:00 Decomposing the image to get the “L” from LAB
14:30 Invert the colours
14:50 Generate a layer mask
15:50 Constructing the “Lighten Only” layer
17:00 Optimizing the effect
17:50 Blurring the overlay layer improves the effect
22:30 Compare to simple burning
24:50 Recap
27:45 http://darktable.org gave the idea to this

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under aCreative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 177: Take 2 and GIMP!

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Download the companion file from Episode 176!
Nachbarnebenan continues his tutorial from the last episode. He isolated his model from the a bit to vivid background by making two images from his RAW file. One is crisp and colourful – best for the model. The other one is soft and a bit dull – this tones the background down.
In this episode he combines them to one image with a layer mask.

Did you know that there is a filter in GIMP to emulate the look of an image for colour blind people? Nachbarnebenan shows how to use it. It’s no so important for photography – but think of all the graphics work done with GIMP. By using this filter you can make a difference in accessibility

If you want to get into programming plugins for GIMP in Python – here is the link to this great HD video from Gimpusers.com.

And for the next episode you’ll need a Trench coat and dark glasses – we’ll enter the Stasi headquaters at night.

Sorry, no TOC up to now, but at around 15:30 is the great segment about GIMP and colour blindness.

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under aCreative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 176: Double Photivo

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Download the companion file! (97.8MB)
It’s time for a guest again. Nachbarnebenan shows how to process a RAW image in the current (well, it was November…) version of Photivo. Photivo has a very different approach to image processing from GIMP and others. It’s more stacking up and tweaking of algorithms instead of making a series of changes one after the other. Fully non destructive and very powerful.

To isolate the model from the a bit to vivid background Nachbarnebenan produces two images from his RAW file. One is crisp and colourful – best for the model. The other one is soft and a bit dull – this tones the background down.
In the next episode he will show how to combine these two images in GIMP into one.

I am still looking for “Bad Good Images” from Phones and other not so good cameras!

Sorry, no TOC up to now.

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under aCreative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 175: Polygonal Blob

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After a visit to Libre Graphics World with a report about the state of GIMP 2.8 and a look into the future.

I tackle a question I was asked at the 28c3. Is there a way to draw geometric figures in GIMP? Well, I found three.

The selection tools provide a variety of ways to make a geometric selection which later can be stroked or filled with a colour or pattern. The paths tool can be handy too, I didn’t cover it in this show.

The Gfig plugin allows the construction and editing of such figures, but there are a lot of drawbacks and some risk of fatal crashes.

And finally – is GIMP the right tool? Why not take Inkscape, dabble a bit and export the result to GIMP? Inkscape is easy to use for simple tasks – they have a really good user interface. For more complicated stuff there are the tutorials at screencasters.com. Long time no show there, but perhaps Richard and heathenx can be pestered into making some more. They haven’t given up but gone into hibernation a bit.

And if you are in or around Toronto – Steve Czajka is holding an interesting course there.

The TOC

00:40 State of GIMP 2.8 – http://libregraphicsworld.org/
01:55 28c3 in Berlin
02:30 Drawing geometric figures – a missing feature?
03:30 Select and stroke
03:35 Rectangle, Ellipse and Free Hand selection tool
04:15 Help from Guides and the Grid
05:00 Stroke
05:50 Combining selections
06:20 Subtracting selections
07:10 gfig plugin
07:30 Lines,rectangles, circles, arcs, polygons, stars and more
08:10 Limits and drawbacks
09:00 Editing
11:00 CRASH!!!!
11:30 Don’t use GIMP! Use Inkscape!
15:30 Getting the work back to GIMP.
16:00 Making a colour transparent
17:00 Choose the right tool
18:00 Version control for GIMP – not yet

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 174: Wilber in a Can

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To get something festive to drink over the holidays I have ordered a special MTG-Beer from a brewery. It’s finest Pils in a can with Wilber on it! (Why a can and not a bottle – there is no “Make a Bottle Filter” in GIMP.)

In this episode I explore the Map to Object filter. It can render an image on a plane, a box, a sphere and a cylinder. The default dimensions of the cylinder are that of a beer can. Quite significant insight into the world of programmers. (BTW, the box preset is a cube, not a pizza box…..)

The image used in the show is stolen from Steve Czajka.

But before that is a look back onto the last show. Saul Goode shows a much easier way to generate patterns with the clipboard and I explain how I got the dots of different sizes in the blog image.

For all of you a happy holiday!

I hope to be back still in this year, so I’ll keep the new year wishes for later. As a distraction the 28c3 is coming up 10 minutes away from my home. I got no tickets but hope to get in there at night and watch some stream on the day.

The TOC

00:30 The Clipboard is a Pattern!
03:45 Create a Layer from a Brush
05:00 Pull things around on the UI
05:10 Pattern with variable dot size
06:55 Gimpressionist – to be explored later
07:10 Steve Czajka’s Calligraphy
08:00 “Map to Object” Filter: Plane, Box, Spere and Cylinder
10:50 Light in the Map to Object filter
11:50 Material in the Map to Object filter
14:30 again Light in the Map to Object filter
17:20 Making a second copy of an image by pulling it on the tool box
18:00 Adding a border to the top and bottom

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 173: Lots of Dots

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Meet the GIMP is on Youtube! Mike AKA Eppic has started this channel and is uploading all the old episodes. Thank You!

I need some dot patterns for a project with Moiré. And so this episode is deveted to building dot patterns out of a grid without grid lines. Misterious? Have a look at the video!

The video ends a bit abrupt. Cinelerra went on strike with the last part of the footage. So some stuff is left as an exercise for you!

The TOC

00:20 We are on YouTube!
01:00 The Importance of Dots
02:00 The Grid filter makes crosses
03:00 Blurr and Threshold to make circles
04:25 Colour to Alpha – making white transparent
04:55 Patterns for the Bucket Fill
05:50 Measurements in the pattern
06:25 Cropping
07:00 Saving as .pat
08:45 Cropping again – same but different
10:00 Moiree demo
11:00 Getting smaller dots
11:15 No Threshold Tool on transparency
11:20 Curves tool on Alpha Channel
13:30 Cinelerra on strike

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 172: Chasing Ducks

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Download the companion file! (67.0MB)

In this show I explore the Color Balance tool to get the right mood into an image shot just after sunrise. These sliders push the colors around in the RGB color space. But how to push?

Then I compare the Curves and Levels tool and give both o them a shot at the image. Both results are fine on some parts of the image – just combine the two parts with a layer mask. An finally cloning out a disturbing sign at the edge of the canal.

After the recording I decided to do a crop of the image. You can see it on 23 and on flickr.

The TOC

00:20 Greetings
01:10 Morning at the Teltow Canal
01:50 Level or not? Measurement and perception
03:50 Mixed lighting by the morning sky
04:15 Colour sample points
06:10 Colour balance tool
12:30 Remove Colour sample points
13:15 Levels or Curves tool?
13:30 Curves applied
15:00 Curves explained
16:10 Levels applied
18:20 Levels explained
20:00 Layer mask for combining the images
22:45 Cloning out a sign
24:30 Good bye

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.

Episode 171: Nightmare Staircase

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Download the companion file! (56.6MB)
Torrents will be back after solving the server problems.

While proofreading a new GIMP book as a “technical reviewer” I came across an interesting deviation of the presented recipe. Making a nightmarish effect.

It’s really easy, very flexible and you can learn a lot about some layer modes while playing around.

The original image is from my new Android phone, the quality is really good. So much progress in the last years. You can find it in the companion file and at Google+. ISO 1250, on a phone…..

The TOC by Kevin:

00:25 Welcome
01:30 The source image
02:24 Use the channel mixer to make a monochrome version of the image
04:05 Instead make the monochrome version using desaturate
04:40 Make blurred Hard Light and blurred Burn layers
07:48 Tidy up using the clone tool
08:45 The theory behind the burn layer mode
09:38 Make a test image to understand the burn layer mode
12:00 The theory behind Hard Light mode
14:00 Why were the layers blurred?
18:00 Remember to save your work
19:15 The End

Creative Commons License
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
Permissions beyond the scope of this license may be available at http://meetthegimp.org.