Table 3 Prediction accuracies of the wooden materials used in Chion-In temple as functions of the spectral pretreatment and spectral range. The predictions were made by employing the discriminant models based on the original and second derivative spectra of the heartwood sample for wavenumbers of 7,300–4,000 cm⁻¹. A schematic illustration is provided on the left to show each spectral region

From: Near-infrared spectroscopy as a potential method for identification of anatomically similar Japanese diploxylons