G PHYSICS
G06 COMPUTING OR CALCULATING; COUNTING
G06V IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
G06V10/00 Arrangements for image or video recognition or understanding
G06V10/70 using pattern recognition or machine learning
G06V10/74 Image or video pattern matching; Proximity measures in feature spaces
G06V10/75 Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries