PERLIN NOISE — PROCEDURAL TERRAIN GENERATOR
TERRAIN PARAMETERS
Scale (frequency):
3.0
Octaves:
6
Persistence (amplitude decay):
0.50
Lacunarity (freq multiplier):
2.00
Sea level:
0.38
Vertical exaggeration:
1.0
Animate (pan camera)
New Seed
Regenerate Same Seed
Perlin Noise:
smooth, gradient-based noise with coherent structure across scales.
Fractal Brownian Motion (fBm):
sum of Perlin noise at multiple octaves, each with halved amplitude (persistence) and doubled frequency (lacunarity).
Result: H(x,y) = Σ_{k=0}^{N-1} persistence^k · noise(lacunarity^k · x, lacunarity^k · y)
The Hurst exponent H controls roughness. Mountains, clouds, rivers, planets — all via fBm.