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. Author manuscript; available in PMC: 2018 Feb 7.
Published in final edited form as: Phys Med Biol. 2017 Jan 12;62(3):966–985. doi: 10.1088/1361-6560/aa5342

Table 3.

The DVF 90 percentile error for IC Demons, SIFT, and Canny DIR methods at 0° and 40° using various DIR methods scenarios for all noise contamination levels. Noise level 1, 2, and 3, correspond to standard deviations of 2.3%, 4.6%, and 11.59% respectively, of the maximum signal intensity.

No Noise noise level 1 noise level 2 noise level 3

40° 40° 40° 40°
zone 1 IC Demons 90% error (μm) 240.3 618.7 255.9 691.1 295.1 754.2 511.1 801.1
SIFT 90% error (μm) 291.4 503.4 300.1 551.1 361.9 602.1 410.2 690.0
Canny DIR 90% error (μm) 258.2 395.5 259.8 403.2 272.1 457.4 301.0 540.1

zone 2 IC Demons 90% error (μm) 248.1 781.8 272.6 779.3 342.2 784.1 522.1 815.0
SIFT 90% error (μm) 279.7 566.2 281.2 591.8 301.9 653.8 367.2 699.9
Canny DIR 90% error (μm) 251.2 442.1 250.2 459.4 283.9 483.5 283.9 501.3

zone 3 IC Demons 90% error (μm) 234.8 738.6 240.1 792.7 369.1 806.1 561.7 810.1
SIFT 90% error (μm) 269.6 703.1 272.2 762.3 347.1 792.6 407.6 808.7
Canny DIR 90% error (μm) 259.3 569.0 260.5 581.2 290.1 604.2 367.2 637.6

zone 4 IC Demons 90% error (μm) 221.8 807.7 241.7 801.9 391.7 810.4 581.1 809.2
SIFT 90% error (μm) 304.5 758.8 321.2 771.2 376.2 790.0 431.9 810.9
Canny DIR 90% error (μm) 232.2 631.9 236.1 657.2 298.9 701.9 389.1 742.8