I went to the Libre Graphics Meeting 2014 in Leipzig to get either a boost for my motivation or to find an end for this project. It turned out to be a booster.
It was a really good time – even with missing the first day and the (for me) most interesting talks because I had to work that day. Another day was spent at the Zoo with Pat David and his wife, more time in the coffee room, Milchbars and restaurants. All the time having good conversations and learning a lot.
And then I got the honors of shooting the traditional group image. I assume it was not my track record of famous group pictures but the 36 megapixel resolution of my D800 that led to that decision.
In this episode I cover the post processing of the image and how I blended my previously taken image into the group.
00:01:14 The LGM Group Photo
00:04:05 Rotating the image
00:06:05 Adjusting contrast and brightness with the curves tool
00:09:23 Getting myself into the image
00:10:54 Registering the layers
00:14:38 Merging with a layer mask
00:17:55 Ways to change the brush size
00:18:50 Cleaning up the layer mask
00:20:38 Curves adjustments on a selection
00:24:28 Cropping the image
00:25:58 Sampling a fill colour out of the image
00:27:14 Sharpening with wavelets
00:31:12 Adding the SVG logo
00:34:04 Scaling down and exporting
00:36:38 Good bye!
The image in this post has been altered a bit more with the GIMP filter “Old Photo” under /Filters/Decor/Old Photo.
00:02:04 Opening an image from the Web
00:03:02 Loading an image from disk and some mistakes to avoid when making your image
00:03:55 Getting an image into another one
00:04:30 Measure Tool
00:05:00 Scaling to the proper size
00:05:25 Copy and Paste between images
00:06:10 RGB- and Grayscale Mode
00:06:30 Save the image in XCF format!
00:07:54 Isolate the person from the background with a layer mask, the Free Hand Selection and a brush
00:10:10 Free Hand Selection
00:12:15 Tedious paint work
00:17:30 “Optimizing” the mask with the curves tool and a blur
00:19:30 Finding the right position and scaling a layer
00:22:15 Adding the Curves Tool to the Toolbox
00:23:20 The Curves Tool
00:26:30 Adding grit and grain by extracting the grain from the image
00:30:00 Bucket fill tool
00:31:08 Try stuff with a layer copy
00:33:06 Adding light and shadows
00:40:20 Move a stack of layers, keeping them aligned
00:41:10 Saving and exporting the image
Grassmann’s Law gives a clue how to create a color sensation in the brain by mixing up some wavelengths out of the spectrum. The CIE finally defines what is visible for a “Standard Observer” and Microsoft & HP (sRGB) and Adobe (Adobe RGB) build their color spaces on that foundation.
00:00:15 Submit to GIMP Magazine
00:00:50 Light as part of the electromagnetic spectrum
00:01:43 Biology of color vision
00:06:14 World Champion of Color Vision: The Mantis Shrimp!
00:06:40 Grassmann’s Law – mixing colors from spectral primes
00:07:22 CIE 1931 Color Space – the standard observer
00:09:00 Elle Stone’s blog – a lot about color!
00:11:40 D65 – the White Point for sRGB
00:11:56 Black Body Radiation and White Points
00:13:44 Bruce Lindbloom has a Color Space viewer
00:14:30 Adobe RGB (1998)
00:15:50 Why not ProPhoto RGB?
00:16:20 Preparing some test shots in the lab
00:16:59 Comparing sRGB and Adobe RGB camera setting
00:18:42 Conclusion – stick to sRGB
00:19:34 Converting between color spaces
00:20:06 Intent: relative colorimetric or perceptual?
00:23:10 Winding down
Watch on YouTube
This week nachbarnebenan shows how to use the KDE (and Windows) photo organizer digiKam. There is more to it, a second part will follow. I don’t know much about digiKam because I use Gnome Shell as my desktop environment and digiKam is made for KDE. It would run on my system, but I would have to install a lot of other stuff too. Linux users have a lot of desktop environments to choose from.
00:00:40 Linux and the “Desktop Wars” (Gnome, KDE et al)
00:05:10 Setting up digiKam
00:07:18 Starting digiKam
00:08:22 Declutter your screen
00:09:10 Selecting a dark theme
00:10:10 adding image collection paths
00:11:20 templates for image meta data
00:12:00 Kipi plugins
00:14:00 Insert: the 100 day challenge and a confession
00:20:10 Tagging images
00:22:40 The timeline
00:23:22 Fuzzy search – doesn’t work properly now
00:23:50 Face recognition and tagging people – also not now
00:24:10 Geographic search of geotagged images
00:25:15 Nesting albums
00:26:00 Selecting images with buttons – useful for tablets
00:27:20 Rating images and attach colour labels
00:27:30 Filtering images
00:28:20 Good Bye!
After a too long summer break I give you a preview of one feature in the next version of GIMP – the unified transformation tool. It combines the tools for moving, rotating, scaling, shearing and for changing the perspective in one tool with a nice and sleek user interface.
The UI design has been done mostly by Peter Sikking. He has also had his hands in the nice free selection tool design.
This unified transformation tool shall be used with visual feedback on the canvas. The old tool will stay around for work where numbers are important. So this is not a replacement but an addition.
00:00:00 General rumblings
00:01:20 GIMPMagazine 4
00:02:26 GIMP 2.9
00:02:26 The Transform Tools of 2.8
00:04:00 Loss of sharpness – unavoidable with transformation
00:04:35 The new Unified Transform Tool UI
00:07:50 Better results due to only one calculation
00:09:00 Peter Sikking, UI architect
00:10:20 The UI design determines your work flow
00:10:41 No replacement for the traditional tools
00:11:33 Final words
00:11:50 End of video
There was no show for quite some time – and there will be a gap until the end of summer. I move back to Bremen – and that takes a lot of time and creativity away. But in Bremen I will have nearly 2 hours more time each day, because I can walk to school and don’t need to ride the famous Berlin S-Bahn Ring Line.
In the meantime I have a challenge for you! Present the place where you live to us – but look down on the sidewalk for that! The best results will be published in the GIMP Magazine #5 and of course here on the blog. The exact rules are below.
This Challenge is a perfect rip off from a challenge by Andrés (Twitter)(Website), an illustrator from Buenos Aires, in the now closed forum of Tips from the Top Floor. Make a mosaik of images of the sidewalks in your city and try to transport the atmosphere.
This is my take on the Silvio-Meier-Strasse around the corner from my flat in Berlin.
Make a mosaic of at least 3×3 images.
All images have to be shot straight down
All images are in the same scale, use the same distance to the ground and the same focal length.
All images have to be linked to each other in their theme by being from one city, one journey …..
Publish your image online and post a link to it before September 1st in the comments to this blog post.
License your image as CC-BY or better and allow this site and the GIMP Magazine to publish your image under CC-BY (here) or CC-BY-SA (GIMP Magazine).
Rules 1 to 4 may be broken, 5, 6 and 7 have to be followed exactly.
You may download the template for my version from above or build your own one. You are free to make other forms than a square – circles or a spiral anyone?
The video uses chapter marks, you can jump between TOC entrys!
00:00:00 Pause until end of August
00:02:05 A contest for you – introduction
00:03:42 The contest rules
00:04:50 My example
00:06:04 Selecting the images
00:08:00 Scaling down and exporting in Shotwell
00:08:40 Calculating the image size
00:09:30 Create the file
00:10:20 Save as XCF.gz – compressed to save space
00:11:05 Creating a “Contact Sheet” for reference with Imagemagick
00:13:00 Make a movable layer mask with “multiply mode”
00:16:00 Building a stack of layer groups and fill it with images
00:23:00 Filling images into the layer stack
00:26:45 Isolate the layer groups with “lighten only mode”
00:27:55 What do these layer modes do? Blackboard explanation
00:33:08 The last image – a Memory to Edith and Tina Wolff
00:34:30 Fine tuning the mosaic – exchange images
00:36:08 Adjusting contrast between the images with the curves tool
00:39:20 THE CHALLENGE
00:41:05 Variations: Soften the borders between fields
00:43:08 Final words about the Challenge
00:44:15 Exporting and scaling down for publication
00:45:45 End of video
Meet the GIMP and the GimpMagazine have been offline for hours today, because someone needed to download all the content in parallel. I have no idea if this is flattering or an attack. I have blocked the IP and will re-open it after I got a mail from you
This was simply too much load for the machine.
Edit: Now the machine should be able to keep up, I limited the memory consumption of Apache. It will be slow, but will stay up.
The next video is in the works, I can start editing tomorrow after the grades meetings are over. Lots of stuff happening here, more in the show.