Fig. 10From: Tendon-motion tracking in an ultrasound image sequence using optical-flow-based block matchingTwo resulting displacements comparing the use of 3 different window sizes with the ground truths. OF 7 × 7, OF 17 × 17, and OF 27 × 27 represent window sizes 7 × 7, 17 × 17, and 27 × 27, respectively. a Case 1, b Case 2Back to article page