Their method of computing calibration parameters relies on three vanishing points that can be estimated from a set of automatically extracted head-feet pairs in the video.
In [31], authors extract head feature vector using the robust 3-level HOG pyramid and then the partial least square (PLS) regression is used to determine the coefficients modeling the relationship between the head and its pose.
Indeed, we have recently shown that a strategy of decoding both congruent and opposite cells according to their vestibular preferences can provide a near-optimal solution to the problem of marginalizing over object motion in order to extract heading in a robust manner (Kim et al., 2014).
Critically, retinal image motion is determined by the translation and rotation of the eye relative to the world (TEW and REW, Figure 1B), such that extracting heading from optic flow requires compensating for the total rotation of the eye-in-world (where, REW = REH + RHB + RBW).
For examples, Tu et al.[34] constructed a face space for craniofacial reconstruction from the dense skull and face surfaces extracted from head CT images.
We extracted gait, head, and height modalities from the OU-ISIR Gait Database and introduce spatial resolution (SR), temporal resolution (TR) and view as quality measures that significantly affect biometric system performance.
Whole genome DNA was extracted from head and thorax of each bee using a CTAB lysis and single phenol-chloroform extraction [14].
Demographic information was extracted from Head Start records, which were completed at time of registration.
Extract head pose descriptors to obtain a representative feature vector.
