Research Article

Multivariate Image Analysis Applied to Cross-Laminated Timber: Combined Hyperspectral Near-Infrared and X-ray Computed Tomography

Figure 2

(a) Predicted RGB image; (b) the first principal component analysis (PCA) contour plot component distinguished longitudinal 0° and transverse 90° layers in cross-laminated timber (CLT); and (c) the second PCA contour plot component determined a knot.