Scale invariant feature transform

Invariant scale criteria

scale descriptor

Spectral feature scale

Affine Invariant Feature

invariant feature

rotation invariant feature

Statistically invariant feature

feature descriptor

(+)Scale

000-Scale

1∶1000 scale map of land use

1∶5 million scale

1-9 scale

①Baumé ②specific gravity scale

250000 scale regional geological survey

②Celsius scale of thermometer

2-D gray Scale Vector

3D multiple scale marginal detection

500000-scale