Fractals/Computer graphic techniques/2D

Direct links

• Color and Color gradient
• 2D plane.
• Quality of the image
• Optimisation
• graphic pipeline
• 2D graphic algorithms

Software

All tasks (image processing) can be done using:

• own programs (GUI or console)
• own programs and graphic libraries
• graphic programs like GIMP
• fractal programs like:
  • fractint
  • xaos
  • mandel by Wolf Jung

One can use free graphic libraries:

• ImageMagick
• GEGL
• DeviL
• FreeImage
• GD
• GraphicsMagick
• OpenCV
• OpenImageIO

Targets in graphics processing

Here are 3 targets / tasks:

• graphic file (saving/ loading image)
• memory array (processing image)
• screen pixels (displaying image)

Memory array

Image in memory is a matrix:

• A 24-bit color image is an (Width x Height x 3) matrix.
• Gray-level and black-and-white images are of size (Width x Height).

The color depth of the image:

• 8-bit for gray
• 24 or 32-bit for color,
• 1-bit for black and white.

Screen pixels

glxinfo | grep OpenGL

glxinfo | grep "direct rendering"

DRI

Direct Rendering Infrastructure (DRI2)