# Tag Archives: PGM

## Fraktalismus Outtakes: Sea Monsters

Sea Creature 1 Sea Creature 2

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## Fraktalismus – my presentation at Dublin Maker 2016

A zip archive of my complete Fraktalismus folder (containing all the content for the presentation) can be download here: Fraktalismus.zip (93.9 MB) This is the code I used to create the Julia Set fractal zoom animation above: Pantograph animation is … Continue reading

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## Example code from presentation: Ways of Seeing Julia Sets

I gave a presentation at yesterday’s DIT School of Mathematical Sciences lunchtime research seminar titled Ways of Seeing Julia Sets: Visualizing the forces that shape fractal Julia sets. This was the abstract: Early in the 20th century, work by mathematicians … Continue reading

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## Another Julia Set animation

Click this image to view the Julia Set animation (the gif file is about 5.3MB in size, so I didn’t want to embed it here directly): This is the Python code I used to generate the 200 individual frames in … Continue reading

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## Creating Julia Set images in Python

Today, I’ve been experimenting with creating Julia Set images in Python. Each of the four images above shows the same square region of the complex plane; between -2 and +2 on the real axis and between -2j and +2j on … Continue reading

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## Variable exponent in Mandelbrot algorithm

In my previous two posts, I generated images of the Mandelbrot Set using the conventional iterative mapping function to generate the sequence of complex values for each point in the area of the complex plane that was shown. I’m struggling … Continue reading

## More Mandelbrot

Here’s a modified version of the mandelbrot program from the previous post. This time, the generated images are in colour and output in binary PPM format (which is still uncompressed, but a bit more space efficient than the plain text … Continue reading

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## Visualising the Mandelbrot Set

I suppose it’s about 20 years since I first read about Benoit Mandelbrot and his pioneering work on fractal geometry. Ever since then, I have been intrigued by how fractal images with beautiful and complex textures can emerge from very … Continue reading

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## Creating a shadow template of a PGM image

I’ve just been cleaning up a scanned copy of a line drawing on paper. The background of the scanned image is quite dark and the shadowing is a bit uneven over the full image region, which makes it difficult to … Continue reading

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## Modulo patterns in C (PGM and PPM)

During one my Engineering Computing classes last semester, I was writing an example C program to create a PGM image file when I accidentally produced an interesting pattern. I had been using a simple function of the pixel coordinates x … Continue reading

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