Multi-scale keypoint hierarchy for Focus-of-Attention and object detection
João M. F. Rodrigues, J. M. H. du Buf · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) · 2005
Hypercolumns in area V1 contain frequency- and orientation-selective simple and complex cells for line (bar) and edge coding, plus end-stopped cells for key- point (vertex) detection. A single-scale (single-frequency) mathematical model of single and double end-stopped cells on the basis of Gabor filter responses was developed by Heitger et al. (1992 Vision Research 32 963-981). We developed an improved model by stabilising keypoint detection over neighbouring micro- scales.