AI engineering glossary · Computer vision
What is image pyramid?
Image pyramid: A set of copies of one image at progressively smaller resolutions, each usually half the size of the last. Searching every level lets an algorithm find objects or features of different sizes with one fixed-size detector, and it underlies many classic matching methods.
Image pyramid: an example
A 640 x 480 image yields levels of 320 x 240, 160 x 120 and 80 x 60; a face detector with a fixed 24 x 24 window finds large faces at the coarse levels.
Related terms
More Computer vision terms
- Image resizing
- Image segmentation
- ImageNet
- Inception module
- Instance segmentation
- Intersection over union
- Mask R-CNN
- Max pooling
Where you learn it
Image pyramid is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.