Figure 2

Fragment of the same area of the formulation from the microscope for seven different experienced operators. In their opinion, they set the microscope the best - a). For each image, the algorithm for image analysis and processing must be modified in such a way so that it works properly – e.g. binarization b). This results in significant technical complications. Despite this, due to the various best settings, each of the experts gets different results. The sequence of images is random.