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