Episode 167: Exporting Grumpy Bears


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This Blog needed a header image – and it still needs a lot of header images to rotate through. So I created one out of an image of a Berlin Subway station. Nothing much new in here – rotating, cropping to the needed aspect ratio, a bit of curves for better contrast and colours, scaling and sharpening. Finally I added a text layer with the image credits.

If you want your image on top of the blog – make one (1000 × 288 pixels) and send it to me at info@meetthegimp.org!

But before that I took a little excursion into Shotwell again and explored the Flickr export function. On the day of the last show, Shotwell released a new version. So it’s no need to compile the trunk code – just download the full package.

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 166: Shotwell revisited

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Just a short show about the newest version of Shotwell (0.11.1+trunk of September 19, 2011). They got hierarchical tags implemented – the only feature I really missed in comparison to F-Spot.

The features list (which I simply stole from their site…. )

  • Tags can now be organized into hierarchical trees
  • Paired RAW + JPEG images are treated as a single photo when imported from a camera
  • Select different developers for RAW photos: use the development produced by Shotwell or by your camera
  • Shotwell now uses GSettings instead of GConf to store its configuration information
  • “Hide Photos Already Imported” setting persists between imports
  • Several all-new saved search options
  • JPEG mimics of RAW images are no longer stored in your home directory, and are now created on demand
  • Shotwell now supports Windows Bitmap (.bmp) images

Try their precompiled packages or roll your own.

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 160: Photivo

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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.

New Darktable Screencasts and a Release

Over at Pascals’s site are new screencasts about the basics of using Darktable. And they have a new release, 0.7.1. Has it become a bit faster? ;-)

How to modify the F-Spot database

On my new Linux installation I wanted to have all my images in one folder. Due to some mishaps F-Spot had stored the images in three different locations. I looked a bit around and then found a forum post which described an easy way to do this.

Find your photos.db database. It’s usually in ./config/f-spot/. Then use sqlite3 to extract the information into a text file:

sqlite3 ~/.config/f-spot/photos.db .dump > f-spot.dump

If you stare wondering at a “bash: sqlite3: command not found”, just install the package “sqlite3-tools”.

Now open this file in your text editor (not word processor…..) of choice. You’ll see a lot of lines, among them images with paths. Just change these paths with search and replace to the new scheme.

INSERT INTO "photos" VALUES(4243,1243489564,'file:///home/rs/Pictures/Photos/2009/05/28/','RLF_9743.JPG','Rolf Steinort rolf.steinort@gmail.com',38,1,0);

Take care to only change the paths, don’t delete or change any of the other stuff. It can break everything. ;-)

Now make a backup of your database and import the changed data back into the database.


mv ~/.config/f-spot/photos.db photos.db.backup
sqlite3 ~/.config/f-spot/photos.db < f-spot.dump

This is only working when no database is there, so make the backup! If you run into an error, delete the new database.

Of course you should only start F-Spot again if you are sure that all the files have reached their new destinations safely.

Other news: Shotwell imports F-Spot data and images without problems. And #150 has been recorded the third time and is just in the rendering tool chain. I'll know about the result in some moments.

Quality Printing with GIMP

Worldlabel.com is a printer label supplier in the US who is heavily into using and promoting Open Source. They have a blog too, where they just have published an excellent article by Nathan Willis about printing in GIMP. Nathan did also a good writeup about the state of Photography under Open Source some weeks ago.

It’s no fault to check out the other blog posts and informations too, I found a HowTo about Open Office especially helpful.

(With the pointer to this blog I received also a donation of 30€ from the owner of Worldlabel for helping to cover the costs of Meet the GIMP. There were no conditions to this donation, he didn’t ask for linking to his site or blog.)

Episode 148: A Shot at Shotwell

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With Ubuntu 10.10 coming up there will be a change in the standard photo managing program. It will change from F-Spot to Shotwell. I installed the release candidate of Ubuntu in a virtual machine and gave Shotwell a try.

Not bad, really not bad. :-)

I assume there will be more to Shotwell here soon, this was really my very first impression of the current version. The experience with the version in Ubuntu 10.4 was quite, ehm, underwhelming. But they did a lot for the new one.

I had not much time to do this show, so there are some editing gaffes and no TOC.

The TOC by Kevin

00:25 Welcome from Rolf
00:38 Ubuntu 10.10 Maverick Meercat
01:29 Welcome to Shotwell – getting images into Shotwell
02:30 Import from Folder
03:40 Sidebar
05:20 Tagging images
07:30 Menus
08:20 Publishing on the web
08:45 Show in file manager – open file location
09:25 Preferences
10:20 Editing an image
12:50 Rating an image
14:25 Rating and filtering in the browser view
15:50 Full screen mode
17:05 Integration with Gimp
19:30 Does Shotwell understand .xcf files?
20:45 Summary
23:01 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.

Getting the focus distance out of Nikon NEF files

The lensfun tab in UFraw does not read the distance information for Nikon lenses, because the .NEF files do not record a value for SubjectDistance in the EXIF data. But the information is in there – only not in a standard way.

In some circumstances the subject distance is essential for lens corrections. Then you have to enter the value by hand. mac has written a script that can extract the distance information under Linux and perhaps MacOS.

When you run the script by typing FD in a terminal, it asks you for the full path to the folder where your image files are.  It then prints the file names and their focus distances to a file called FocusDistances.txt in the same folder as the images.

As usual, you have to copy the script as root or with “sudo” to /usr/local/bin and make it executable.  It also assumes you have exiftools installed.

And here is the script:


#!/bin/sh
#   This script prints the focus distance for all image files in the specified folder
#   to an output file called 'FocusDistances.txt' in the same folder
echo ""
echo "~*~*~*~*~*~*~*~*~*~*~*~*~*"
echo "Extract Focus Distance information"
echo "~*~*~*~*~*~*~*~*~*~*~*~*~*"
echo ""
echo
echo -n "Enter path to directory with the images, and press Enter"
echo
echo
read directoryname
exiftool -p '$filename Focus Distance = $FocusDistance' $directoryname > /$directoryname/FocusDistances.txt
echo ""
echo "~*~*~*~*~*~*~*~*~*~*~*~*~*"
echo "All done!"
echo ""
echo -n "                Press any key to finish…"
echo
read answer
exit 0
# Save this script as "FD", and, as root, copy it to /usr/local/bin/
# To use it, type "FD", enter the full path to the source directory, press ENTER
# and wait for the script to finish.  Press any key to continue.
#  Last updated 14/7/2010

As you can see by the date this has sat on my mail account for quite a while nd mac had to remind me of posting it. So if I have promised you something, just drop me a line. There was so much to think of here recently that I tend to forget stuff.

State of the Art

There is a nice article about photography and Open Source over at the blog of worldlabel.com. It covers a lot of programs and I think Nathan Willis missed nothing.

Other news: I am just starting to produce the next episode, the first from Berlin. :-)

Episode Pascal001: Darktable

Images by Pascal de BruijnPascal de Bruijn has made his first Video about Darktable, the free virtual lighttable and darkroom for digital photographers. I gave a short intro here some episodes ago, but didn’t go beyond “Oh – I can click here too!”. Pascal has been actively involved in making Darktable and so I assume he really knows what he is talking about.

Edit: Darktable is available for Linux and other *nixes and Mac (which is a *nix too now…). Sorry, no Windows up to now. Nobody wants to do the work of porting it.