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Histogram Equalisation with Metal Performance Shaders
Histogram equalisation is a quick way to enhance contrast and bring out detail in an otherwise flat image by both stretching and flattening an image's histogram. The operation is available in both...
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Nodality for AudioKit: Node Based Synth for iPad
I've done a fair bit of tinkering with the amazing AudioKit framework and I've also done a fair bit of tinkering with node based user interfaces. Ever since AudioKit introduced nodes, I've been...
View ArticleCore Image for Swift Version 1.3
Simon Gladman - Advanced image processing with Core Image from Daniel Haight on Vimeo.I'm pleased to announce that version 1.3 of my book, Core Image for Swift, is now available through Apple's iBooks...
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Random Numbers in Core Image Kernel Language
I added a new Scatter filter to Filterpedia yesterday. The filter mimics the effect of textured glass with a kernel that randomly offsets its sample coordinates based on a noise texture created with a...
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A Core Image Transverse Chromatic Aberration Filter in Swift
Transverse or lateral chromatic aberration is an optical artefact caused by different wavelengths of light focussing at different positions on a camera's focal plane. It appears as blue and purple...
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Swift 3.0 for Core Image Developers
After reading Paul Hudson's excellent What's new in Swift 3.0 article, I thought I'd take an early dive into Swift 3.0 myself to see how it affects Core Image development. The first step is to install...
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Chaos in Swift! Visualising the Lorenz Attractor with Metal
Inspired by this tweet from Erwin Santacruz, the owner of http://houdinitricks.com, I thought it was high time that I played with some strange attractors in Swift. Strange attractors are equations that...
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Experimenting with Impacts in SideFX Houdini
Now that my working days are spent working purely with Swift, it's a good time to stretch my technical and creative muscles and learn something new in my free time. I've long admired Houdini from...
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Chaos in Houdini! Modeling Strange Attractors with Particles
I recently posted Chaos in Swift! Visualizing the Lorenz Attractor with Metal, which was inspired by a Houdini tweet from Erwin Santacruz. It appears that Erwin's solution creates geometry, so I...
View ArticleSimulating Belousov-Zhabotinsky Reaction in Houdini
The Belousov-Zhabotinsky reaction is an amazing looking chemical reaction that can be simulated with some pretty simple maths. I've written about it several times and recreated it in several...
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Melting Geometry in Houdini
As I explore Houdini, I find myself continually in awe at the ease with which I can create complex and physically realistic effects. This post looks at creating geometry and applying a heat source to...
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Metaball Morphogenesis in Houdini
I posted recently about simulating the Belousov-Zhabotinsky reaction in Houdini. Although it worked, it wasn't particularly aesthetically pleasing, so here's a hopefully prettier version using a...
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Randomly Transforming Scattered Cones in Houdini
This post looks at a super simple Houdini project that scatters cones across the surface of a sphere and uses a Perlin noise function in a VEX wrangle node to randomly transform each cone. The...
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Swarm Chemistry in SideFX Houdini
Hiroki Sayama's Swarm Chemistry is a model I've tinkered with and blogged about for years. Swarm chemistry simulates systems of heterogeneous particles each with genomes that describe simple kinetic...
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Creating a Swarm Chemistry Digital Asset in Houdini
My recent post, Swarm Chemistry in SideFX Houdini, illustrates an interesting effect, but tweaking the values in the swarm chemistry solver is a pain. What would be great is a user interface to vary...
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Using Houdini VOPs to Deform Geometry
Houdini VOPs, or VEX Operators, are networks that use a visual programming paradigm to create operators that can, for example, deform geometry, define material shaders or generate particle systems....
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Stripy Viscous Fluid Impacts in Houdini
My first Houdini blog post, Experimenting with Impacts in SideFX Houdini, discussed viscous fluid impacts. This post looks at how to add a little more detail to the fluid object - specifically, I...
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Simulating Mitosis in Houdini
Here's a quick and easy way to create a procedural simulation of cell mitosis that, in my opinion, looks pretty impressive. The simulation is based on a point cloud which is wrangled inside a solver....
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Creating a Geometric Structure from Mitosis
This post expands upon my previous post, Simulating Mitosis in Houdini. After watching Creating Points, Vertices & Primitives using Vex by Fifty50, I wondered what sort of structure my mitosis...
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More Chaos in Houdini: Simulating a Double Pendulum
I looked at creating strange attractors in Houdini recently and there's a more elegant solution over at Entagma. This post looks at an alternative way of modeling an attractor using SideFX Houdini with...
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