Evaluation of visual impact of multiple image characteristics observed in edge-grain patterns

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 Multiple regression analysis results

Criterion variable	Predictor variable				Intercept	R ²
Criterion variable	M	F	C _G	C _S	Intercept	R ²
S _Varied
Partial regression coefficient	0.276	0.401	0.045	0.481**	−4.936**	0.859
Standardized partial regression coefficient	0.196	0.211	0.068	0.844	−4.936**	0.859
S _Agreeable
Partial regression coefficient	−0.343**	0.028	−0.095**	0.054*	1.067**	0.798
Standardized partial regression coefficient	−0.758	0.045	−0.448	0.295	1.067**	0.798
S _Vague
Partial regression coefficient	−0.757**	−0.129	−0.375**	−0.059	4.805**	0.892
Standardized partial regression coefficient	−0.632	−0.080	−0.667	−0.121	4.805**	0.892
S _Showy
Partial regression coefficient	0.666**	0.179	0.271**	0.229**	−5.249**	0.918
Standardized partial regression coefficient	0.575	0.115	0.498	0.488	−5.249**	0.918
S _Natural
Partial regression coefficient	−0.277**	0.191	−0.102*	0.065	0.695	0.619
Standardized partial regression coefficient	−0.569	0.291	−0.447	0.330	0.695	0.619

S _Varied, S _Agreeable, S _Vague, S _Showy, and S _Natural correspond to sensory values for varied (Henkani-tonda), agreeable (Kanjino-yoi), vague (Boyatto-shita), showy (Hade-na), and natural (Shizen-na) impressions, respectively (Italics in parentheses is corresponding Japanese.)
M mean growth ring width, F growth ring width fluctuation, C _G growth ring contrast, C _S shading contrast
* p < 0.05, ** p < 0.01