In this page there are images and code to generate them (titles in alphabetical order)
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Avoidance of crossing
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Bump map from image
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The cardioid and the nephroid
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The cascade algorithm
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Caustic at the bottom of a cup
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Central limit theorem and diffusion
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Color spaces
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DCT-II basis functions
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Denoising with wavelets
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Dictionary methods
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Digital low-pass filters
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Digital windows
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Dirichlet, Fejér and more
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Edge detectors
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Edges with wavelets
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Electromagnetic drawings with sagemath
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The finite wavelet expansion
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Fundamental domains
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A fundamental pinch
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GIMP: Alpha to Logo
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Gravitational slingshot
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A Haar wavelet expansion
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Harmonic oscillations
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Histogram manipulation
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Homomorphic filtering
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Huffman trees
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Interference of 1D waves
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Julia & Newton
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The Kuwahara filter
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The Lloyd-Max algorithm
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Maass forms
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Magic cans
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Masking the JPEG Fourier coefficients
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The matrix of the DWT
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Mean vs. median
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The Meyer wavelet
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A miniFIGlet
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Moiré effect
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Morphological filters
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A nonconstant function
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The Parks-McClellan algorithm
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Pencil line drawing effect
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Periodic noise
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"The poetry of analysis" (Ad)
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Ray tracing dodecahedrons
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Ray tracing Rubik's cube skeleton
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Runge's phenomenon
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A sage plotter
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Signal compression
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Simple Fourier series
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Simple image filters
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My snake lemma
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Sound quantization
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A spiraling (or not) exponential sum
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Splines are nearly local
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The strange beat
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A Sugihara illusion
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Where is my pencil?
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Windowed transforms