[IP3-2-3] Keypoint detection

Keypoints are objects (or locations) on the ground that reveal locally invariant features in images and therefore are easily detectable by automatic algorithms. Methods for this process employ scale-invariant feature transform (SIFT) algorithms for the automatic detection of geospatial objects.

External resources

• Tao, C., Y. Tan, H. Cai, and J. Tian. 2011. 'Airport Detection From Large IKONOS Images Using Clustered SIFT Keypoints and Region Information', IEEE Geoscience and Remote Sensing Letters, 8: 128-32.

Learning outcomes

• 2304 - Discuss algorithms that use the detection of keypoints to identify objects in images

  Discuss algorithms that use the detection of keypoints to identify objects in images

Self assessment

Outgoing relations

• [IP3-2-3] Keypoint detection subclassof [IP3-2] Computer vision in EO

Incoming relations

• [IP3-9-2] Scale invariant feature transformation (SIFT) (proposed relation) [IP3-2-3] Keypoint detection