Hue Changer: Executable or Text Version

Working with any BMP, JPG or GIF picture, this facility enables you to select a region of the picture and to then alter the colour hue of all sub-regions having a colour within a selected range.

This works very effectively even for example with a car-body with many reflections and shadows (see below).

LOMO: Executable or Text Version

What is LOMO-ised? Around 1990 a St Petersburg company called LOMO launched a cheap camera called the LC-A. The photos it produced were dire quality - but in a certain stylish way; over-exposed in the centre, under-exposed (vignetted) at the edges, out of focus at the edges, much too contrasty, and colours either over or under saturated.
The program here adapts photos to look LOMO-ised, by adding in each of these defects to produce an attractive end-result, despite it being technically dreadful!
You can see many of my photos here: Pictures of England

3-D Fractal: Executable or Text Version

Using a sequence two affine transformations which are chosen according to pre-set probabilities, this program generates fully 3-D fractals. Sometimes they look a bit like ferns or lichen growths, other times somewhat outlandish 3-D splashes of colour.

Once the fractal has been generated, the resultant 3-D pixel-map is rotated in full 3-D perspective, to provide a proper feeling of 3-dimensional depth.

Twister: Executable or Text Version

This program is a bit of trivia I've written today which cuts up any chosen picture into N by N pieces, where N is any multiple of two between 8 and 256. Using the mouse wheel, or the arrow keys, the pieces can be rotated non-linearly. Each of the pieces is a bitmap, in fact, all stored contiguously in a reserved memory space. The chopping-up is carried out in ASM.

The aspect ratio of the original picture is preserved throughout

To save the picture you'll need to use Alt-PrintScrn, since I haven't bothered to include a save facility in the program yet.