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.

Pen Pal anyone? ;-)

I need (EDIT: Not now – schedule changes….) some one-time pen pals for my class – more later down in the post.

Fist about the next show. I put way too much time into trying to convert Nachbarnebenan’s Photivo/Gimp video into something that Cinelerra would eat. He has a new microphone, sound is well, tutorial well done – and the framerate changes all the time. No audio sync, wrong sync and at last a version with perfect sync that kills Cinelerra (and the whole system) 5 minutes into the video. I found that out after editing for quite a while – lots to do in the first minutes.

I started to record a show today but put too much on my plate GIMP wise – new try tomorrow.

Pen Pals!

I have to teach English in my class for some weeks. One lesson only per week, so no big deal. But I got the idea to have the kids answer some real letters from real persons – not only these fake ones out of the text book.

If you want to help me, send my class a short letter from your hometown, perhaps with an image or two in it. The kids are 13 to 14, learning English in their 4th year. Most come from migrant families (Turkish, Arab, Vietnamese), English is their third language. Some are starting to tackle French now too. So please don’t torture them with too high brow English, but they should be able to read more than Kindergarten level. And they have the Oxford dictionary….   😉

Most of them know basically only Berlin-Neukölln, TV and perhaps the hometown of their parents. Everyday stuff will be interesting for them, your street, your local attractions, where do the kids hang out….

You can mail your contribution as a text editor file (Libre Office can import a lot) or as a pdf to info@meetthegimp.org . I’ll print that for the kids. Or if you have still envelopes, stamps and so on, write to “Alfred-Nobel-Schule, Klasse 8d, Britzer Damm 164, 12347 Berlin, Germany”.

 

Of course you’ll get an answer from the kids!

Thank You!

Download Server Problems

Status

There are some severe but still unexplored problems at the download server. And not only there, it seems to be a larger problem at the uni. Marcin is on the hunt for people to put the blame on 😉 – and we all will have to wait.

Nightmare show is editied and ready for upload – when we have a server again.

Forum down and no new Episode this week

Status

The forum is the last bit on the old server, I am just now moving it to the new machine. No real ETA as I am also updating the software to the next major version. (Upgrade successful – waiting for the DNS changes to come through to me to finish this. Tomorrow….)(Upgrade finished!)

The DNS record has been updated, but this change takes quite a while to move through the internet.

No voice – no show. I have got a really bad cold, bad enough to keep me a week out of work. So you have to wait for next week. Have a look at Gimptricks YouTube Channel. Perhaps you haven’t seen them all.

Another tip and still no video

I got an invite I couldn’t resist from ex colleagues in Bremen. So I’ll be back on Monday – and then make a video.

My tip: If you have kids (or know some) – point them to the

Tux Paint Kids Summer Drawing Contest
If it wins one of the OLPCs – grab it and send it to me. 😉

TuxPaint is a very good and playful software, not only fun for kids.
Tuxpaint

Episode 160: Photivo

Download the Video! (22:16 42.3 MB)
Download the mobile version (22:16 21.6 MB)
Download the companion file! (13.0 MB)
Download the torrent file!
[flattr /]
Let’s quote the website:

About Photivo

Photivo is a free and open source (GPL3) photo processor. It handles your RAW files as well as your bitmap files in a non-destructive 16 bit processing pipe with gimp workflow integration and batch mode.

Photivo tries to provide the best algorithms available; even if this implies some redundancy. So, to my knowledge, it offers the most flexible and powerful denoise, sharpen and local contrast (fake HDR) algorithms in the open source world. (If not, let’s port them 😉 ) Although, to get the desired results, there may be a quite steep learning curve 😉 .

Photivo is just a developer, no manager and no “Gimp”. It is intended to be used in a workflow together with digiKam/F-Spot/Shotwell and Gimp. It needs a quite strong computer and is not aimed at beginners.

Processed with Photivo

Basically it’s an image processing assembly line. You set the parameters, throw your RAW file in on top, wait for a moment and catch your image when it falls out of the machine.

Today I give it a try and rescue an image of a kite with it. It’s an impressive tool with a quite unique but understandable user interface. I’ll explore this further, perhaps it will enter my workflow.

The companion file contains both used RAW files and all the setting files created by Photivo.

Sorry, there is no TOC up to now.

Kite

JPEG out of camera

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 159: EMERGENCY!

NotsignalDownload the Video! (30:28 57.9 MB)
Download the updated companion file! (18.2 MB)
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[flattr /]
No, no real emergency here, just an emergency switch in a Berlin subway station. It needed some attention concerning colour and contrast to get it a bit more creepy.

I go through the whole image processing with cropping and changing the colours in several layers. Nothing new technically, but the basics about layer masks explained again.

The updated companion file contains also a version for GIMP 2.6. It’s the same, just without layer groups.

The TOC

00:20 Hi! And some comments about the state of this project.
03:25 Cropping inside out
07:50 Automatic white balance
08:40 Adding a layer group
09:50 Curves to make weird colours
11:25 A second layer for colour adjustments
12:10 Generating a layer mask out of a colour channel and basic use of layer masks
20:05 More strange colours with the curves tool colour channels
22:00 New layer, same layer mask
23:50 Adjusting colours again with the curves tool …
25:20 .. but the threshold tool is better here
27:10 Add red to the writing
29:00 Clearing up

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 153: Brocade

Download the Video! (29:02 55.1MB)
Download the new torrent file!

[flattr /] Again a trip to Thailand with a wonderful candid shot made by Peter at a school festival. There is not much to enhance, just a crop, a bit of curves and the mutation of a blue trash bag into a gray one.

Before that I talk about bracketing and “dedicated” vs. “drive by” photography. And I present the next addition to our poor webserver – a Wiki for the collected wisdom of you all. Link sits in the menu box on the top of the right sidebar. Give it a try – reading and writing.

The TOC

01:50 Bracketing to get the right exposure
04:30 Photo Session or Drive by Shooting
06:55 The MTG Wiki
14:15 School in Thailand
15:05 Decisions about blurring the background
16:20 Inside out crop
20:25 Copy the layer for backup
20:30 Curves adjusted
22:25 Removing colour with a saturation layer
25:30 Adjusting brightness with a value layer
26:50 Recap

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.