Table 2.
Experimental results of image processing model (using Blob and ORB detectors in detecting the target point for needle insertion) on 4 mm hair length skin phantom. (Point values are shown in pixel unit).
| Hair graft and target point selection (BLOB&ORB result): Short haircut 4 mm range | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. | Measured Point |
Exact Point |
Error |
Precision (TP/ (TP+FP)) |
|||||||
| x axis | y axis | x axis | y axis | Euclidian distance | x axis | y axis | Euclidean Distance | %Eu_error | TP (%er<2) | Count (TP) | |
| 1 | 175.7743225 | 130.7589417 | 186.613 | 102.609 | 212.9624818 | -10.8387 | 28.14994165 | 30.16448482 | 14.16422488 | FALSE | 0 |
| 2 | 187.6710053 | 98.4940033 | 187.634 | 99.5456 | 212.4049068 | 0.037005 | -1.0515967 | 1.052247598 | 0.495397029 | TRUE | 1 |
| 3 | 171.4871368 | 130.7589417 | 178.48 | 113.987 | 211.7738099 | -6.99286 | 16.77194165 | 18.17135553 | 8.580549001 | FALSE | 0 |
| 4 | 183 | 128 | 189.008 | 91.427 | 209.9593303 | -6.008 | 36.573 | 37.06319459 | 17.65255896 | FALSE | 0 |
| 5 | 167.1999664 | 111.4666443 | 170.96 | 121.508 | 209.7415449 | -3.76003 | -10.04135571 | 10.72225149 | 5.112125731 | FALSE | 0 |
| 6 | 157.3000031 | 107.8000031 | 158.927 | 107.971 | 192.1341411 | -1.627 | -0.17099695 | 1.635958139 | 0.851466652 | TRUE | 1 |
| 7 | 211.2000122 | 100.0999985 | 210.065 | 99.6992 | 232.5236218 | 1.135012 | 0.40079847 | 1.203699352 | 0.517667557 | TRUE | 1 |
| 8 | 171.6000061 | 83.59999847 | 170.96 | 83.9069 | 190.4407768 | 0.640006 | -0.30690153 | 0.709786135 | 0.372707015 | TRUE | 1 |
| 9 | 179.0800018 | 100.4300003 | 179.232 | 101.203 | 205.8304084 | -0.152 | -0.77299969 | 0.787801983 | 0.382743244 | TRUE | 1 |
| 10 | 160.6000061 | 100.0999985 | 159.679 | 99.6992 | 188.2480107 | 0.921006 | 0.40079847 | 1.004435986 | 0.533570571 | TRUE | 1 |
| 11 | 173.6307373 | 132.9025269 | 195.776 | 97.4431 | 218.6856189 | -22.1453 | 35.45942686 | 41.80650205 | 19.11717024 | FALSE | 0 |
| 12 | 174.9000092 | 128.699997 | 174.72 | 128.276 | 216.752879 | 0.180009 | 0.42399695 | 0.460626434 | 0.212512256 | TRUE | 1 |
| 13 | 151.8000031 | 133.1000061 | 163.44 | 110.227 | 197.1360574 | -11.64 | 22.8730061 | 25.66444889 | 13.01864775 | FALSE | 0 |
| 14 | 171.6000061 | 81.40000153 | 170.96 | 81.6508 | 189.4575803 | 0.640006 | -0.25079847 | 0.687391941 | 0.362821028 | TRUE | 1 |
| 15 | 176 | 106 | 174.72 | 105.715 | 204.2124865 | 1.28 | 0.285 | 1.31134473 | 0.642147183 | TRUE | 1 |
| 16 | 188 | 93 | 186 | 91.427 | 207.2556304 | 2 | 1.573 | 2.544470279 | 1.227696576 | TRUE | 1 |
| 17 | 179 | 123 | 178.48 | 122.26 | 216.3391273 | 0.52 | 0.74 | 0.904433524 | 0.418062851 | TRUE | 1 |
| 18 | 131.7690125 | 142.4170075 | 154.415 | 106.467 | 187.5612282 | -22.646 | 35.95000745 | 42.48816056 | 22.65295497 | FALSE | 0 |
| 19 | 210.0717468 | 124.3281784 | 200.288 | 96.6911 | 222.4060515 | 9.783747 | 27.63707841 | 29.31773874 | 13.1820778 | FALSE | 0 |
| 20 | 191.1800079 | 159.7200012 | 204.048 | 127.904 | 240.8215512 | -12.868 | 31.81600122 | 34.3197196 | 14.2510998 | FALSE | 0 |
| 21 | 199.1000061 | 151.8000031 | 199.536 | 152.34 | 251.0420102 | -0.43599 | -0.53999695 | 0.694037021 | 0.276462501 | TRUE | 1 |
| 22 | 156.4820099 | 130.7589417 | 166.448 | 104.211 | 196.3794012 | -9.96599 | 26.54794165 | 28.35690683 | 14.43985808 | FALSE | 0 |
| 23 | 152.1948395 | 117.8974075 | 162.688 | 93.6831 | 187.7336107 | -10.4932 | 24.21430753 | 26.39013276 | 14.05722324 | FALSE | 0 |
| 24 | 157.9825134 | 103.7497177 | 168.704 | 79.3948 | 186.4526049 | -10.7215 | 24.35491771 | 26.61037938 | 14.27192685 | FALSE | 0 |
| 25 | 209 | 122 | 207.808 | 91.427 | 227.0309697 | 1.192 | 30.573 | 30.59622841 | 13.47667609 | FALSE | 0 |
| 26 | 166.1000061 | 122.1000061 | 167.2 | 121.508 | 206.6882533 | -1.09999 | 0.5920061 | 1.249182854 | 0.604380188 | TRUE | 1 |
| 27 | 180.0614929 | 124.3281784 | 186.752 | 98.1952 | 210.9943289 | -6.69051 | 26.13297841 | 26.97583077 | 12.78509755 | FALSE | 0 |
| 28 | 189.199997 | 145.199997 | 189.008 | 145.572 | 238.5691331 | 0.191997 | -0.37200305 | 0.418627636 | 0.17547435 | TRUE | 1 |
| 29 | 199.7032623 | 143.3354034 | 189.76 | 115.492 | 222.142431 | 9.943262 | 27.84340344 | 29.56558102 | 13.3092903 | FALSE | 0 |
| 30 | 202.4000092 | 133.1000061 | 205.552 | 101.955 | 229.4481352 | -3.15199 | 31.1450061 | 31.3040964 | 13.64321239 | FALSE | 0 |