Accurate Fatigue Detection Based on Multiple Facial Morphological Features

Figure 3

The differences of LBP features between the two groups of samples. (a) For each feature, the averaged value of the fatigue samples minus that of the nonfatigue samples was plotted. (b) The -test value was calculated between the two groups of samples for each feature, and the value –log10( value) was plotted.

(a)

(b)