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Chapter 4

Feature detection and matching

4.1 Points and patches ................................ 183
4.1.1 Feature detectors ............................ 185
4.1.2 Feature descriptors ........................... 196
4.1.3 Feature matching ............................ 200
4.1.4 Feature tracking ............................ 207
4.1.5 Application: Performance-driven animation .............. 209
4.2 Edges ...................................... 210
4.2.1 Edge detection ............................. 210
4.2.2 Edge linking .............................. 215
4.2.3 Application: Edge editing and enhancement .............. 219
4.3 Lines ...................................... 220
4.3.1 Successive approximation ....................... 220
4.3.2 Hough transforms ............................ 221
4.3.3 Vanishing points ............................ 224
4.3.4 Application: Rectangle detection .................... 226
4.4 Additional reading ............................... 227
4.5 Exercises .................................... 228

R. Szeliski, Computer Vision: Algorithms and Applications, Texts in Computer Science, 181
DOI 10.1007/978-1-84882-935-0_4, © Springer-Verlag London Limited 2011