Pyramid (image processing)
| Feature detection | 
|---|
| Edge detection | 
| Corner detection | 
| Blob detection | 
| Ridge detection | 
| Hough transform | 
| Structure tensor | 
| Affine invariant feature detection | 
| Feature description | 
| Scale space | 
Pyramid, or pyramid representation, is a type of multi-scale signal representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image is subject to repeated smoothing and subsampling. Pyramid representation is a predecessor to scale-space representation and multiresolution analysis.