Archive for July, 2008

I just adopted Rosie! Because Land Mines stink!

Thursday, July 31st, 2008

This is Rosie, a HeroRAT. Rosie is still in training to become a professional land mine detector in Africa, but I expect outstanding performance of her. In one of the Focus Ring talks I already plugged this project, but the adoption link was not working. But now it is. ;-)

From the website:

HeroRATS are trained sniffer rats that detect explosives and diagnose disease. This unusual idea has been developed into a competitive technology by a group of Belgian and Tanzanian researchers and animal trainers under the umbrella organization called APOPO. APOPO was initiated in response to the global landmine problem. In the mid 90’s it was well recognized that most mine clearance techniques in use were slow, expensive, and dependant on foreign expertise.

Bart Weetjens, the founder of APOPO, got his first experience with rats as his childhood pets. Years later he remembered his pet rats when he became discouraged by the scourge of landmines in African countries and the expensive, time consuming, and foreign technologies available to clear them from the land. With their terrific sense of smell and trainability, rats could provide a cheaper, more efficient and locally available means to detect landmines. These would be HeroRATS.

Through partnerships with Antwerp University and Sokoine University of Agriculture, Bart set up laboratories in Belgium and Tanzania to begin training and testing African Giant Pouched Rats in the detection of explosive materials. Bart’s hunch about rats proved correct and the trainings were a tremendous success.HeroRATS can use their highly sensitive and accurate sense of smell to identify the presence of both metal and plastic cased landmines, and can be trained to detect a number of different things like explosives, tuberculosis bacteria, tobacco, contraband, etc.

Working with the Geneva International Center for Humanitarian Demining, accreditation standards have been established to license the mine-detecting HeroRATS and over 30 trained HeroRATS are now working to demine Mozambique. From these beginnings, APOPO has also expanded its HeroRAT programs to detect Tuberculosis. Further uses are being explored, such as the ability to conduct search and rescue operations in rubble after disasters.

I pay 5€ a month for Rosie’s needs and hope she’ll have a long and successful life. BTW, they are too light to set off the mines - the just sniff them out for a bit of banana.

In the video you see one of Rosie’s colleagues at work in a Tanzanian mine field. The area between the two men holding the line is still not demined. The men are walking on strips of land cleared by hand - a slow and dangerous process. The deminer is kneeling on the ground and pushes a steel needle into the ground in front of her. Cautious of course. If she finds something hard, she starts to dig. If it is a mine she retreats and a specialist either defuses the mine or blows it up. This demining by hand takes a very long time.
Metal detectors and these rotating chain drum machines are not of much use against most anti personnel mines. They don’t find 100% and the chains destroy the top soil. Both is acceptable for military use, but not for making an area habitable again.

The rats are trained to sniff out TNT. If the find it they start to scratch the ground (1:11 in the video). Then the handler makes this “knickknack” sound with a toy, the rat comes to him and gets some food. The position of the scratching is marked in a chart. This is repeated with an other rat. Then a deminer takes care of the marked spots. Up to now the rats have not “oversmelled” a mine. There are false alarms, but not many. BTW, the code of honour among deminers requires them to have the first walk over an area they have declared as cleared. So quality of work is assured by simple darwinism. ;-)

Under the week this is the only food for the rats, on weekends they have a feast. On workdays they are either on a real minefield or on an already cleared strip with training mines. So they get enough to eat - but only by working for it. Has some parallels to the human condition…. ;-)

I said once: “No ads here!”, but here is one:

Episode 054: Cakovec Castle and Forum

Tuesday, July 29th, 2008
icon for podpress  Podcast Video (63.1 MB): [42:31m]: Play in Popup | Download (28165)
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Someone in Russia with the IP 23.142.32.11 is constantly downloading this file. More than 10000 times today. :-( I have pulled the video off the server until the situation returns to normal. PLEASE KEEP AN EYE AT YOUR DOWNLOAD DAEMONS! (Download Master in this case).

In this first Epsiode of the second year of Meet the GiMP! I return to Cakovec, Croatia with an image from the old castle. For celebrations I made a double length show. ;-) And to celebrate the Croatian style weather here (30+C), I had the windows open and you get some street noises. Our weather is mostly so cold that only bigger shops have an AC.

Before Croatia there is an update on the Old Ink Challenge from the last show. You can download the new set of images and try your knowledge of GiMP (or any other free software program) on that. Please send the results to info@meetthegimp.org.

Of course the new Forum gets a place too in this show. Have a look!

Then I reveal the secret of painting without gaps or overlaps - to answer a question from Luis in Buenos Aires.

In Cakovec I take you with me while I shoot the image to postprocess and tell you a secret of a lot of better photographers than me: MOVE!

The postprocessing involves mostly stuff I had already covered. New is an enhancement of the sky with a masked layer in multiply mode.

A team of highly trained Penguins in the MTG-Labs invented a new TLA, the TOC. And here it is:

The Old Ink Challenge 0:40
The new forum 7:00
Painting without overlap or gaps 10:50
How to shoot a castle 15:20
Postprocessing the castle image 18:20
Rotate 18:50
Crop 20:30
Clone a powerline out 24:20
Boosting the colours with curves 31:10
Enhance the sky with a masked layer in multiply mode 33:00

Now you can skip the parts of the video you don’t like.

Edit: With an audience like you a podcaster can be lazy:

The image I mentioned in the podcast and two links found by Andrew.

http://news.bbc.co.uk/2/hi/middle_east/5254838.stm
http://en.wikipedia.org/wiki/Adnan_Hajj_photographs_controversy

And another goodie found by Mathias in the Netzzeitung

Creative Commons License This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License.

URGENT with UPDATE: Old Documents Challenge

Friday, July 25th, 2008

There was a misunderstanding between me and Ted, the owner of the documents. These documents are not all for publication because that would violate the rights of the archives and persons.

Free to use are the files with the numbers 2, 4, 7, 8, 9, 10, 11. All others should be deleted!

The download link is working again with a new, smaller archive.

You see, the real challenges are still in there.

Please document your work and send it to me at info@meetthegimp.org

Happy Birthday, “Meet the GiMP!”

Thursday, July 24th, 2008

I thought it would be to- morrow - but I checked and it’s exactly one year ago today that I published the first video.

And for cele- brations i have set up a forum for the dis- cussions that are now hidden in the comments. Let’s try out if this works - I can always close it. ;-)

I think we should keep the discussion about specifics of an episode in the comments and do all the other stuff in the forum.

There is an additional board hidden from guests and normal users, where I’ll plan the episodes.

And of course, if you write something brilliant, I’ll steal it for the show or the blog. ;-)

Episode 053: In the USSR the Posters are watching YOU!

Tuesday, July 22nd, 2008
icon for podpress  Podcast Video (34.3 MB): [22:50m]: Download (8620)
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I have to do some corrections on last weeks episode. As I wrote in the update, I had made a blunder with the last layer.
Then we have another video from Andrew A. Gill, the guy who enlightened us about CYMK. He takes on the Comic style from episode 50 and tries to copy a style used by Soviet propaganda and today by Shepard Fairey. +Link +Link
The image on top of this post has been made by Andrew. It’s not exactly Soviet Propaganda. ;-)
Then I have a challenge for you. I got set of images from Ted. He is researching family history. So he has to work a lot with reproductions of old documents. The rules are easy: You are happy about what you get and you don’t complain about quality. Here is a set of images (11MB) for you to cut your teeth in. The goal is to enhance readability. Please document your steps. Next week I’ll tell you how to report about your results.

Finally there are some news about GiMP 2.5.2.

The TOC

00:22 Update to episode 52 - copy visible
04:09 Burn mode - Gimp documentation
05:53 The old shows
06:00 Video from Andrew A. Gill
06:27 - Poster Art
07:00 - Start image - chopped into pieces
08:00 - Posterizing with more control
08:50 - Colouring
10:17 - Saving in indexed mode
13:00 Make your own video for Meet The Gimp
14:20 Comparing the results of poster art
16:23 The Old Ink Challenge
18:30 Extras
18:53 Gimp 2.5 features
22:50 The End
TOC made by paynekj

Creative Commons License This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License.

Niepce - a new promise for a better workflow under Linux

Sunday, July 20th, 2008

Joel Cornuz has a promising project on his Blog: Niepce. Named after one of the photography pioneers it wants to bring the functionality of Adobe Lightroom or Apple Aperture to the Linux desktop. Non destructive editing is one of the goals.It depends on GEGL, so a GiMP integration is “easy” and planned.

Joel has links and more.

How to install GiMP 2.5.2 on Ubuntu 8.4

Saturday, July 19th, 2008

According to billstei in this comments it should work this way:

(This is a compilation of his three postings, I haven’t tried it.)

I was able to compile and install Gimp 2.5.2 (alongside the normal Ubuntu Hardy Gimp 2.4.5, so I have both at once) by following the instructions here: http://www.gimpusers.com/…

However I did the following differently:

1) I did not find it necessary to compile GLib or GTK+ as the ones already in Ubuntu Hardy were fine. So I only compiled babl, gegl, and gimp.

2) In step #5 the only export that you need for compiling is this one:

export PKG_CONFIG_PATH=/opt/gimp-2.5/lib/pkgconfig

Both the gegl and gimp configure steps will demand that you do that export first, or it will complain that you do not have babl. Make sure that you actually do have the babl you just created installed first, or else it will be correct when it tells you that you don’t have it :)

Then to run the program I made a shell script like this (per the advice on the Gimp website here: http://gimp.org/release-notes/gimp-2.5.html )

#!/bin/sh
 PATH=/opt/gimp-2.5/bin:$PATH
 export PATH
 LD_LIBRARY_PATH=/opt/gimp-2.5/lib
 export LD_LIBRARY_PATH
 /opt/gimp-2.5/bin/gimp-2.5 “$@”

Whatever name you give to that shell script file is the one you use to start Gimp 2.5. Remember to do:

chmod +x [whatever-you-called-it]

so you can execute it.

3) I prefer to use deb packaging where possible and so I use the program “checkinstall” rather than doing the “sudo make install” step for each of the 3 compiles. Checkinstall is a little buggy at times so you may not want to use it, but if you do here is some advice:

3a) Checkinstall will fail until you create some directories ahead of time (there may be some I missed, but checkinstall will let you know):

 sudo mkdir /opt/gimp-2.5/share/locale
 sudo mkdir /opt/gimp-2.5/share/icons
 sudo mkdir /opt/gimp-2.5/share/icons/hicolor
 sudo mkdir /opt/gimp-2.5/share/gimp/2.0/fonts

3b) Checkinstall will list 10 options, and option line #2 is the name of the package itself, which will be by default “gimp”. Since you already have “gimp” installed as Gimp 2.4.5 you will have to change the package name to avoid a conflict, to something like “gimp-2.5″ or similar, just so it’s different.
4) Start checkinstall like this:

sudo checkinstall --install=no

Then when it finishes you will get a deb, which you can install like this (babl package shown, similar for the others):

sudo dpkg -i babl_0.0.22-1_i386.deb

and of course the advantage is that this will show up in Synaptic if you later decide you want to get rid of it (or upgrade it).
I wish I could say all this is “easy”, but perhaps not. If it seems confusing, then just stick with the original instructions and not mine.

According to the weather report I have a lousy weekend in front of me, (my Croatian friends: it’s afternoon and 16°C in front of my window….. ;-) ) so perhaps I’ll give it a try.

Open Thread - 080719

Saturday, July 19th, 2008

Let’s try this - open for any comment, question and so on. Basic rules of human interaction apply.

Oh, an addition: I’ll steal the interesting parts…. ;-)

“Open Thread” postings? Forum? what else?

Saturday, July 19th, 2008

This comment suggested a posting from time to time where you can post any comments, without being bound to the topic of the show or posting. I like the idea. But I can also set up a forum - not that much work and I would hope for some of the interested people to step in as a moderator.

What do you think?

(Comments are closed - this was too attractive for spammers!)

Gimp plugin developers wanted!

Wednesday, July 16th, 2008

For the very cool Gimp Colorize Plugin Christopher Lais is looking for a new maintainer. Don’t let this die.
The same is about the quite good GREYCstoration plugin, volunteers wanted to improve the code of the current GIMP plug-in and implement features of the commandline version.
The third is the JPG2000 plugin, since the GSoC project nothing happens and nobody has seen this working in Gimp on Linux.
So new developers are needed to improve existing plugins and move them to Gimp 2.4 and later to 2.6.
Anybody reading this could help finding the new maintainers and developers.
Post this on your blog and your related boards! If one of your friends could do this ask him!

(I got this from Eckhard M. Jäger  http://my.opera.com/area42/blog/gimp-plugins-developer-wanted)