Free painting software for linux

mtPaint is designed for creating icons and pixel based artwork. mtPaint can edit indexed palette or 24 bit RGB images and offers basic painting and palette manipulation tools.
Its main file format is PNG, although it can also handle JPEG, GIF, TIFF, BMP, XPM and XBM files. Due to its simplicity and lack of dependencies it runs well on GNU/Linux, Windows and older PC hardware.
Main features:
- Edit indexed palette or 24 bit RGB images.
- Load & Save PNG, GIF, JPEG, TIFF, BMP, XPM and XBM files.
- Paint using tools and patterns in one simple main window.
- Protect certain colours on the canvas from being painted over.
- Manipulate digital photos : Crop, scale, rotate, sharpen, soften, emboss, change brightness / contrast / saturation / gamma.
- Up to 100 undo levels.
- Multiple image clipboard.
- View images between 10% and 2000% of their original size.
- English (UK) language by default, Spanish and Czech translations via gettext system (GTK+1: ISO-8859-1 & ISO-8859-2 GTK+2: UTF-8).

CinePaint is painting and retouching software primarily used for motion picture frame-by-frame retouching and dust-busting. CinePaint has been used on many feature films, including THE LAST SAMURAI where it was used to add flying arrows.

CinePaint is different from other painting tools because it supports deep color depth image formats up to 32-bit per channel deep. For comparison, GIMP is limited to 8-bit, and Photoshop to 16-bit.

CinePaint is free open source software. The generosity and commitment of its developers, users and sponsors make CinePaint possible.

Quake III Arena Cell Shadings goal is to add Cell Shading capabilities to the Quake III engine with Real-time performance.

In order to provide such feature we have decided to use Kuwahara filter. Kuwahara filter is a noise-reduction filter that preserves edges.

It uses four subquadrants to calculate the mean and variance and chooses the mean value for the region with the smallest variance.

To increase the hand-painted effect we have decided to apply a simple blur filter to reduce hard-edges on textures and increase the flatness effect.

To produce the cell shading edege effect we use no gfx card shaders, so our implementation could run with almost any gfx card. This effect is produced by painting backface polygons with a thick wireframe without textures and repaint all the scene, but this time, with textures.

To test our modified engine just place our binary in your games folder to frag all day long!

Ensure you have a copy of Quake 3 Arena installed on your PC. Youre going to need the artwork/content from the game because it is not redistributable.

Synfig application is a powerful, industrial-strength vector-based 2D animation software package, designed from the ground-up for producing feature-film quality animation with fewer people and resources.

While there are many other programs currently on the market to aid with the efficient production of 2D animation, we are currently unaware of any other software that can do what our software can.

2D Animation has traditionally been very expensive because every frame must be drawn by hand. Even with todays digital inking and painting software, the process still relies on individuals hand-drawing each frame. This laborious task is called "tweening".

Our animation technology eliminates the task of manual tweening, producing smooth, fluid motion without the animator having to draw out each frame individually.
This allows you to produce 2D animation with fewer people while producing a product of a higher quality.

Please keep in mind that this release of Synfig Studio is considered a developer preview. IE: It is targeted at developers, not end users. That being said, feel free to play around with it -- just be sure to give it another chance later on down the road if you find yourself a bit frustrated.

Piet::Interpreter is a Perl interpreter for the Piet programming language.

SYNOPSIS

use Piet::Interpreter;

my $p = Piet::Interpreter->new(image => my_code.gif);

$p->run;

Piet is a programming language in which programs look like abstract paintings. The language is named after Piet Mondrian, who pioneered the field of geometric abstract art. The language is fully described at http://www.physics.usyd.edu.au/~mar/esoteric/piet.html. A Piet program is an image file, usually a gif, which uses a set of 20 colors and the transitions between blocks of those colors to define a series of instructions and program flow. See the above URL for more details. (Note: some sample programs there may not work, as they were constructed before a working interpreter was available.)

Since Piet is a visual language, an image parsing mechanism is required. This module uses Image::Magick, so it would be to your advantage to download, install, and test that module and its related stuff before trying to use this one.

IMGV is a free Image Viewer that runs on all versions of MS-Windows and Unix-like systems running X Window (Linux, OSX, FreeBSD, etc..)
Main features:
- JPEG, GIF, PNG, TIFF, BMP, PCX, TGA, PPM, PNM, PBM, PGM, XPM, XCF, LBM, IFF, MPEG
- Brings up an options menu that allows you to control imgv with your mouse (middle-click or press c key to close it).
- Allows you to control imgv with your keyboard (click help for key list). Learn these for super-quick operations!
- Allows you to specify files/remote files/directory of files on the command line.
- Allows you to view images in fullscreen mode, you can even configure imgv to launch in fullscreen mode.
- Delay as long as you want. Pause, jump forward/backward an image, optional wrap/auto fit images to screen. Option to slideshow 4 images at a time.
- Effects currently includle "fade in" and "melt". You can even set multiple effects to run at the same time
- You can have as many lists as you want and the files in them can be in any directory and/or drive on your system, even from websites.
- Allows you to view 4 images at a time on your screen. Clicking one of the images enlarges it. Option to slideshow 4 images at a time. Navigate with space/backspace or right-click/middle-click
- Imgv supports the viewing of Exif data (metadata from images that came from digital cameras, scanners, software) on-the-fly and more detailed in the Image Details screen.
- Set gamma control, delete images, set your wallpaper, launch image into an external viewer...
- You can easily set your desktop wallpaper with imgv.
- A file called ".imgv.conf" contains lots of default variables for imgv which you can customize to your needs.
- Loads a page of thumbnails at a time. Click a thumbnail to enlarge it. Navigate with space/backspace or right-click/middle-click. You can adjust the thumbnail sizes in imgv.conf.
- Load individual images from websites or extract all images from a webpage. You can then slideshow, zoom, etc. Option to download.
- Dynamically randomizes the images.
- You can tag multiple directories to load all of their contents at once.
- imgv allows you to optionally load sub-directories of files with the click of a button.
- Allows you to search for and/or filter out certain files.
- Zoom-in, Zoom-out, Rotate Clock-Wise and Counter Clock-Wise, Flip vertically, Flip horizontally, Refresh..
- Imgv now has minimal mpeg movie support.
- imgv has a unique interface that you can customize in imgv.conf
- Allows you to remove an image from your current session without having to delete it permanently from your hard disk.
- This option will hide the image currently being displayed by painting the window black until a keypress or click turns it off. You can password protect this by setting the PASSWORD option in imgv.conf
- Shows an entire screen full of information about the image, including a histogram.
- If an image is larger than the screen you can use your arrow keys to move the image up, down, left or right to bring it into view.
- Allows you to load new directory or drive of images. You can optionally load sub-directories and/or tag multiple directories. You can click directory names or type in their corresponding number to change directories.
- Gives a list of all the currently loaded image names. Clicking an image name will jump to that image.
- Allows you to jump around between 640x480, 800x600, 1024x768, 1280x1024, and custom resolutions as well as fullscreen support.
- Imgv automatically temporarily disables your screensaver while watching movies or viewing slideshows.
- imgv can run on virtually any operating system youre likely to use.
Requierments:
- Python 2.2 or greater
- Pygame
- PIL (python-imaging)

Tmxxine is a linux distribution based on Puppy Linux 2.01.
Main features:
- All standard puppy software included: WP, Spreadsheet, Browser, editors, painting, vector editor, email, ftp, chat etc
- Voice Synthesis At the moment the Operating system is not singing to you but the Symphony code is being used. "Flinger" is being considered for future versions. Right clicking on an icon and opening it as text will give you this. The talk command says the word - change the words to have the computer say what you want
- Audacity sound editor. Very stable. Also available for Windows.
- Xara graphics - 50% complete - very usable. Sadly the enclosed nightly build is unstable (first time) for a stable version try here?
- NVU WSIWYG HTML editor. NVU is more powerful than composer on which it is based. Tmxxine has made a commitment to create its documentation in wiki format. This tool is for temporary deployment.
- 007 blowfish single file encryption. This only works on single files. It is only two lines of code
- Java. Widely used, the third most important language after C and C++ It allows access to java enabled web sites - many scientific sites make use of it.
- Extra codecs for viewing movies through the Internet
- Mplayer - be careful with this - crashed my machine from within dotpup menu
- VYM - View Your Mind. A Mind mapping thought generation tool
- Tuxcard - organise you bits of information
- Xfce Window manager, Shut down / exit to prompt and then type xwin xfce To return reboot Xfce and then type xwin jwm

Karbon is a vector-based drawing application for KOffice. The project allows artists to create complex drawings without losing image quality when zooming in on, or resizing the drawing. You can use Karbon to add finishing touches to diagrams created using Kivio or charts created using KChart. Graphic design ideas can be quickly and easily transformed into high quality illustrations with Karbon.
What makes a vector-based drawing application like Karbon different from a pixel-based drawing application like Krita?
In a vector drawing - such as the drawing shown above - your drawing is stored as geometric shapes such as lines and curves. When the drawing is resized, the image scales smoothly.
However, in a pixel-based drawing, your drawing is stored as many dots (pixels) in rows and columns. When you resize a pixel-based image, the dots will be enlarged. This can result in jagged edges known as pixelation and aliasing and thus the quality of the image will go down. Pixel-based drawings often have larger file sizes compared to simple vector drawings.
For example: Karbon is useful for creating cartoons drawings or editing clip art which often needs to be resized to fit in a document or on a poster. Krita is more suited to painting pictures or editing photographs.
To get started with Karbon quickly, you might want to try opening and modifying some of the images from the Open Clip Art Library.