Fig. 2
From: Visual perception of different wood surfaces: an event-related potentials study
Example of 18 difference kinds of wood original samples reconstructed in the 3D software. Including 3 kinds of wood colors (light, medium, and dark color), 2 kinds of grains (radial, tangential), and 3 kinds of glosses (matt, semigloss, and glossy). Each of them has 2 other samples produced from the same sawn timber under the same condition to eliminate the delicate differences of the stimuli in the test