Difference of Gaussians (DoG)
This is another way from Structure Matrix to detect features.
Slides: https://www.ipb.uni-bonn.de/html/teaching/photo12-2021/2021-pho1-10-features-keypoints.pptx.pdf
For Keypoint Detection
Difference of Gaussians Keypoints
- A variant of corner detection
- Provides responses at corners, edges, and blobs
- Blob = mainly constant region but different to its surroundings
You basically have different levels of blurriness
