Thursday, September 10, 2009

Upgrade from OpenOffice 3.0 to 3.1 on Ubuntu 9.04 Jaunty



Issue the following commands inside a terminal:
echo 'deb http://ppa.launchpad.net/openoffice-pkgs/ubuntu jaunty main' >> /etc/apt/sources.list

gpg --keyserver keyserver.ubuntu.com --recv 60D11217247D1CFF
gpg --export --armor 60D11217247D1CFF | sudo apt-key add -

sudo apt-get update
sudo aptitude dist-upgrade
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Wednesday, September 9, 2009

Fix GPG:error in Synaptic



If you get the problem above with Synaptic, enter the following commands in a terminal:

gpg --keyserver keyserver.ubuntu.com --recv 2836CB0A8AC93F7A
gpg --export --armor 2836CB0A8AC93F7A  | sudo apt-key add -

Repeat for every key missing, changing 2836CB0A8AC93F7A with whatever you see in the error dialog box. After doing this, you can click on the reload button in Synaptic.
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Monday, September 7, 2009

Raw file image processing with Raw Therapee

Raw Therapee is a free RAW converter(using DCRaw) and digital photo processing software that is available for 16 bit and 64 bit Linux.

It has the following image processing options:Exposure control, White balance adjustment (in-camera, automatic and spot white balance), Highlight Recovery, Shadows/Highlights, Basic Luminance curve tool, Brightness / Contrast adjustment, curve editor, sharpening tools, Color shift control, Luminance denoising algorithm, Color denoising tool, Image flipping horizontally or vertically, rotation by 90 degrees clockwise or counter clockwise, Arbitrary image rotation (straightening tool), Simple lens distortion correction, Crop tool, Chromatic Aberration correction tool, Channel Mixer for Red, Green and Blue channels, C/A Correction and Vignetting Correction.



Install ?

Download the latest version here. Extract the compressed archive to a location of your choice. Navigate to the extracted folder and double click on the RT executable to run.

Tip:

I highly recommend that you read the manual first before using RT. RT is built for batch processing of images and at first the interface might confuse you. After you configured all your image processing parameters, you can apply them to images. In the file browser dialog there are little icons that you click on to add them to the processing queue. To start the processing, you first click on the icon that looks like a rocket and then you click 'start processing'.



RT is a incredible piece of software and is the best raw converter available on Linux.
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