Category Archives: GIMP

Linux Raw Image Management

I’ve steered clear of RAW photography for some time. Maybe it’s the extra few steps required to get a finished product, or the very large file size, or just that “it’s not jpeg!”
I changed the quality mode on my 20D to RAW this afternoon and was shocked when it told me that I could only take 79 shots! *gulp*
I fired off a shot, of an old Honda parked in front of my car and as I was in a hurry, forgot to do any more.
Later on I went searching and found a number of sites:

  • Raw Digital Photo Decoding in Linux – Dave Coffin’s dcraw seems to be the basic library that everyone else builds their GUI tools on. He went to the trouble of decoding the various RAW formats in existance.
  • Nikon D70 under Linux – plenty to read here, including a section on noise removal and links to a few GIMP noise removal plugins I must try out!
  • RawPhoto – the author says it’s beta quality code, but it works. I haven’t tried it yet however.
  • UFRaw – you can install this in Debian with apt-get install gimp-ufraw. I tried it. It works, now I have to read the user-manual to figure out what all those controls mean!

I’d post an example RAW photo but the only one I have is nothing to write home about so you’ll just have to wait in line like everyone else!

Corpus Christi on Pana

Here’s a panoramic photo I assembled from 2 shots at the Corpus Christi Procession on Sunday. I created the photo with the help of Panoramic Stitch which I mentioned a few days ago. It did a very good job, especially when you consider the foreground. I can’t imagine what kind of manipulation I would have had to go through to get those lines to match up! Using this GIMP plugin was simple – select a few control points, it figures out how close the points are on each image and then you generate the stitch!
I did try to stitch a 3rd photo to the left of this one, but the distortion became too great and artefacts were very evident. I hope the author is encouraged to continue working on this project as he has come a long way already!
PS. Pana is Cork slang for “St. Patrick’s Street”, the main street running through Cork City.