Figure 7: Propagation
mask and tuning of inertia. (a) A slice of the propagation mask superimposed
with the gyral parcellation. (b) Alpha map: alpha is a measure of anisotropy
increasing the influence of the -ball versus the particle inertia. (c)
Zoom on the -ball of the yellow area. (d) Zoom on the -ball of
the yellow area with a global sharpening focusing the distribution weight
around the -ball maximum (it should be
noted that during the tracking, the sharpening is performed locally inside a
half cone of directions defined by the particle inertia).
