04. Features and Matching

Feature descriptor

  • Local feature, invariance

SIFT descriptor

  • Computing dominant orientation
  • Computing the feature vector
  • Post-processing
  • Property of SIFT

Matching the local descriptors

  • How to match
  • Which threshold
  • Compute affine transformation

RANSAC

  • Robust matching
  • Idea and implementation of RANSAC
  • Rounds and convergence

Homography

  • Why we need homography
  • Warping an image with a global transformation
  • Solving for homographies
  • Panorama stitching
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