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SERIE_AI
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AI_073
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MGIF_501
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EXAMPLES
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README
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1998-03-14
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54 lines
Here are some examples showing off the MGIF image manipulation functions.
Most of the files were prepared by Eero Tamminen (see manual).
These pictures should really be in an ST-Guide manual supplement, but
that's for a later release of MGIFv5.
Pictures/
Original images for the examples below.
Logo/
How to make you own MGIF logo:
- text explanation
- final GIF
- POV script for nice effects
- example output using the POV script
Functions/
Examples of the functions:
- Rotate (44 degrees)
- Histogram equalization
- Inversion (no offset)
- Log scaling
- Threshold (at 128)
- Contrast expansion (from 128)
- Brightening (by 16)
- Darkening (by 16)
- Blur (size 3) (Median didn't change the image noticebly)
- Lmax (size 3)
- Lmin (size 3)
- Oil (7, 64) (first Lmax 3 as otherwise it became too dark)
- Pixelize (size 5)
Convolut/
Examples of some convolution matrix applications:
- Dirs image contains examples of all the directions using Kirsch.
- Directional matrixes (NE direction):
- Shift difference
- Gradient direction
- Smoothing
- Kirsch
- Sobel
- Line
- Bias (64) with the Kirsch matrix.
- Symmetrical matrixes:
- Low pass 2
- High pass 2
- Laplace 2
Combine/
A pair of image combination examples.
- Intheart: Intel outside image (1/4) overlaid on a heart (3/4)
with an addition of laplace 2.
- Guardian: Combined images with Kirch added on different
accuracies for larger and smoother emboss effect.
(((scale 1/4, Kirch, scale 4, blur) ||
(scale 1/2, Kirch, scale 2)) ||
(Kirch))