From: Wheat grain width: a clue for re-exploring visual indicators of grain weight
Indices | Original resolution (pixel) | Enhanced resolution (pixel) | SI (mm/ or mm2) | Cross-validation | RES-based RMSE improvement (%) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Slope | Slope | Slope | Slope | Slope | Intercept | R2 | RMSE | Slope | Intercept | R2 | RMSE | Overall RMSE | Micro average RMSE | ||
Area | 0.6876076 | –14.13069 | 0.7639 | 1.39916 | 0.007242 | –11.96377 | 0.8197 | 1.22279 | 3.4546529 | –10.50562 | 0.8197 | 1.22279 | 1.218 ± 0.165 | 1.228 ± 0.000 | 12.61 |
Minor | 11.473872 | –40.04071 | 0.7726 | 1.37308 | 1.206266 | –38.92239 | 0.8478 | 1.12329 | 26.223532 | –37.43548 | 0.8501 | 1.11472 | 1.117 ± 0.121 | 1.123 ± 0.000 | 18.19 |
MinFeret | 11.479164 | –47.28420 | 0.7802 | 1.34983 | 1.185451 | –39.77784 | 0.8389 | 1.15583 | 25.751014 | –38.21530 | 0.8409 | 1.14849 | 1.150 ± 0.134 | 1.157 ± 0.000 | 14.37 |
Area/perim | 43.088447 | –56.75704 | 0.7957 | 1.30144 | 4.580449 | –53.57889 | 0.8763 | 1.01287 | 98.930057 | –51.22634 | 0.8759 | 1.01427 | 1.011 ± 0.143 | 1.020 ± 0.000 | 22.17 |
Area × Circ | 0.7810103 | –9.19948 | 0.7958 | 1.30124 | 0.009157 | –7.648741 | 0.8786 | 1.00327 | 4.3865946 | –6.502854 | 0.8784 | 1.00403 | 1.001 ± 0.135 | 1.009 ± 0.000 | 22.90 |
Minor/Solidity | 11.300208 | –47.78814 | 0.7856 | 1.33331 | 1.189310 | –40.20437 | 0.8371 | 1.16220 | 25.845173 | –38.66377 | 0.8396 | 1.15317 | 1.157 ± 0.126 | 1.163 ± 0.000 | 12.83 |
MinF/Solidity | 11.243958 | –55.24627 | 0.7836 | 1.33950 | 1.166277 | –40.90504 | 0.8259 | 1.20137 | 25.326662 | –39.29586 | 0.8282 | 1.19332 | 1.196 ± 0.139 | 1.203 ± 0.000 | 10.31 |
Area × Solidity | 0.7367298 | –12.03813 | 0.7702 | 1.38042 | 0.007417 | –11.62672 | 0.8298 | 1.18779 | 3.5390870 | –10.18897 | 0.8295 | 1.18879 | 1.183 ± 0.158 | 1.193 ± 0.000 | 13.95 |
Perim. × Circ | 3.3790373 | –54.79264 | 0.7925 | 1.31155 | 0.359924 | –51.66935 | 0.8765 | 1.01190 | 7.7804528 | –49.44107 | 0.8764 | 1.01215 | 1.011 ± 0.121 | 1.017 ± 0.000 | 22.85 |
A1 (Area × Perim. × Circ. × Solidity × MinF) | 0.0017579 | 13.56291 | 0.7996 | 1.28896 | 2.1504E-07 | 14.393318 | 0.8691 | 1.04158 | 0.0505571 | 15.011033 | 0.8685 | 1.04405 | 1.038 ± 0.149 | 1.047 ± 0.000 | 19.19 |
A2 (Area × Perim. × Circ. × Solidity × Minor) | 0.0018807 | 14.06366 | 0.8003 | 1.28685 | 2.2128E-07 | 14.390431 | 0.8748 | 1.01874 | 0.0520301 | 15.005713 | 0.8742 | 1.02147 | 1.016 ± 0.143 | 1.025 ± 0.000 | 20.83 |
Kim index | 0.1306980 | –1.60504 | 0.7644 | 1.39762 | 0.000325 | 0.0399900 | 0.8200 | 1.22159 | 1.1264207 | 1.1437907 | 0.8200 | 1.22156 | 1.216 ± 0.164 | 1.226 ± 0.000 | 12.59 |