in Table 1. HU value could be sufficiently predicted using optimal
wavelengths since it has a determination coefficient (R2
p) = 0.87,
RMSEP = 4.01% and RPD = 2.80. The SPA–SVR model increased R2
p
by 2.36%, RPD by 7.69%, and reduced RMSEP by 7.39%. Although
the performance of SPA–SVR model only had a small improvement,
the 13 wavelengths selected by SPA could replace the full spectral
to predict HU value during egg storage, which was beneficial to
industrial application for hyperspec