Lecture 9.4: Features [SIFT Part 2]
Lecture 9.4: Features [SIFT part-2]
What is a useful Signature Function f?
Find local maxima in position-scale space
Alternative Kernel
Scale-space
Find local maxima in position-scale space of DoG
Results: Difference-of-Gaussian
SIFT Orientation estimation
SIFT Orientation Normalization
SIFT descriptor formation
SIFT Descriptor Extraction
Reduce effect of illumination
Review: Local Descriptors