Extract and match visual features

Outcome: obtain keypoints, descriptors, ERP coordinates and unit bearings that remain meaningful across the seam and can feed spherical pose estimation.

Start

Use the established face-based pipeline: extract and match spherical features.

Compose

Understand face sampling, bearing lifting and angular deduplication: projected features.

Extend

Detect scale-space extrema directly on the sphere: sphere-native features.

Evaluate

Match two panoramas and inspect descriptor and geometric diagnostics: matching and diagnostics.

The full detector comparison and parameter reference remain in the features tutorial.