Sensitive Wavelengths Selection in Identification of Ophiopogon japonicus Based on Near-Infrared Hyperspectral Imaging Technology

Table 2

Effective wavelengths selected by different methods.

Methods	Number	Wavelengths/nm
SPA	5	889, 1014, 411, 460, 407
RC	7	409, 448, 455, 491, 545, 959, 999
LW	8	550, 990, 433, 1014, 539, 385, 380, 382
UVE	291	408, 410, 417, 425, 428, 430, 432, 444~467, 477~479, 481~517, 519, 524~564, 574, 576~611, 626, 631~639, 642, 644, 650, 652, 659, 664, 667, 676~695, 697, 700, 703, 709, 711, 723, 740, 752, 759, 776, 786, 788~796, 799, 800, 810, 844, 849, 852, 853, 856, 857, 859~929, 934, 937, 940~981, 986, 990~1007, 1009, 1014
UVE-SPA	12	426, 455, 503, 545, 589, 786, 875, 970, 994, 998, 1007, 1014
CARS	105	418, 426, 431, 437, 443, 457, 466, 475~481, 489, 491~495, 497~500, 507, 511, 516, 519, 533, 535, 539, 540, 543~545, 548~551, 555, 558, 565~569, 571, 573, 576, 582, 584, 594~610, 613~618, 624, 637, 640, 643, 648, 653, 661, 668, 675, 681, 685, 687, 689, 719, 735, 738, 750, 751, 795, 806, 813, 816, 831, 856, 862, 874~877, 881, 888~889, 905, 910, 918, 920, 924, 961~964, 968, 973, 976, 987, 992~996, 1023
iPLS	32	942~982
BiPLS	208	418~436, 456~474, 494~513, 534~592, 614~653, 839~879, 963~1023
FiPLS	480	418~1023
GA-PLS	85	431, 466~469, 472, 473, 479~481, 490~494, 506~509, 512~522, 534~550, 551, 580~584, 685~689, 799~801, 875~877, 888, 956~963, 965~978, 983, 985, 990~1000