Figure 2

Invariant evaluation for spectral reflectance image including dielectric and metal objects. (a) color image of the original spectral reflectances; (b) color image of the proposed invariant representation; (c) 3D view of the component image of spectral reflectance at 550 nm for a small area including metal and dielectrics; (d) 3D view of the invariant representation for the same part at 550 nm.