Muntaz star and a gallon on his tarboosh, with the base parallel to the lower edge of the hat itself. On the badge there were also marks of long service and merit (the Crown of Savoy) as a badge of merit for promotion in war, and the frieze of specialty (gunner, chosen gunner, musician, trumpeter, drummer, saddler, farrier) and the badge for injury in war. A muntaz of the zaptié in the full dress wore also white and black ostrich feathers on his hat. During the Battle of Gondar distinguished himself a muntaz Unatù Endisciau who refusing to surrender to the
Top-hat filter Top-hat filter The name Top-hat filter refers to several real-space or Fourier space filtering techniques (not to be confused with the top-hat transform). The name top-hat originates from the shape of the filter, which is a rectangle function, when viewed in the domain in which the filter is constructed. In real-space the filter performs nearest-neighbour filtering, incorporating components from neighbouring y-function values. However, despite their ease of implementation their practical use is limited as the real-space representation of a top-hat filter is the sinc function, which has the often undesirable effect of incorporating non-local frequencies. Exact non-digital implementations are only