settings further pictures from such a sliver region may be used for analyzing the degree of parallelization of the slivers the fiber hook number and size the structural influence of the material and the generation of dust based on all these parameters the quality of the drafting process may be determined advantageously pictures are also taken especially of the edge zones for analyzing the guidance of the fibers in the edge zones during the drafting process closed or discontinuous sliver image at the edges by a width wise scanning of the sliver by the camera it may also be determined whether longitudinally extending streaks are present in the sliver such streaks may appear if the slivers are improperly guided into the drafting unit that is the slivers are overlapping or are at an excessive distance from one another based on the analysis of the entire sliver width an evaluation of the initial draft in this region may be performed it is a further advantage of the invention that the orientation of the slivers and fibers may be analyzed since the number and the position of the obliquely and straight running slivers represent a measure for the effective starting draft the starting draft of the calender roll pair is dependent from the following parameters delivery speed draft friction sliver number material soiling and the like in this manner the real starting draft of.