Soybean Saponin Content Detection Based on Spectral and Image Information Combination

Table 3

Correlation analysis between different image feature information and soybean saponin content.

Feature information	Pearson correlation	Significant differences
Area	0.058	0.319
Perimeter	0.056	0.030
Major axis	0.153	0.008
Minor axis	0.007	0.903
Roundness	−0.246	0.000
Eccentricity	−0.209	0.000
Aspect ratio	−0.205	0.000
Rectangle-area ratio	0.289	0.000
Circle-area ratio	−0.233	0.000
Equal-area-circle diameter	0.077	0.183
Edge variation coefficient	−0.276	0.000

Note. significantly correlated at the level.