5.3 Driver, Road, and Car Classification Pipeline
Benchmarks
We now evaluate each of the three classifiers responsible for
monitoring driver, road and car states.
Driver Classification Pipeline. Table 3 reports the precision
and recall for face direction events (FR) and facing.
left (FL)). We find for FR precision is 68% and recall is 68%;
similarly, for FL the precision and recall are 79% and 88%, respectively.
After studying these errors we identified two primary
causes: (1) event loss (i.e., missing events) due to camera switching
(39%); and, (2) “shallow face turnings”, which are difficult to
detect (17%). Errors in these face-based events
can also propagate to the process of recognizing driver inattention
(ID) because these inferences are inputs used to detect this
particular dangerous driving event.