Fig. 5

Sample result and evaluation for people counting. Green, yellow, and red bounding boxes indicate true positives, false negatives, and false positive, respectively. Assuming that the frame is the first in a video, \(t=1\), the actual number of people is five (\(p_1=5\)), from which only three have OTS (\(n_1=3\)). The measures are \(\text {MOE}=0\), \(\text {MPE}=2\); and \(\text {COE}=0\). Note that the person marked with a red bounding, even that his face is visible, we consider he has no OTS as he is walking in a direction opposite to the location of the camera. The frame is cropped