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. Author manuscript; available in PMC: 2008 Mar 1.
Published in final edited form as: Ann Biomed Eng. 2006 Dec 7;35(3):387–396. doi: 10.1007/s10439-006-9225-2

FIGURE 5.

FIGURE 5

(a) Comparison of spatially averaged velocity calculated from manually tracked data with that of the correlation algorithm before adaptive filtering, Standard Error of Prediction (SEP) = 0.85 mm/s; (b) Comparison of spatially averaged velocity calculated from manually tracked data with that calculated by the correlation algorithm after modifications were made to improve the algorithm, SEP = 0.50 mm/s; (c) Comparison of maximum velocity calculated from manually tracked data with that calculated by the correlation algorithm after modifications were made to improve the algorithm, SEP = 0.49 mm/s; (d) Comparison of the optimized velocity (V* =W × Vmax + (1 − W) VĖ„) calculated from manually tracked data with that calculated by the correlation algorithm, SEP = 0.43 mm/s.