Method and arrangement to find accumulations of particles, for example metaphase plates

摘要

In order to find accumulations of particles, for example metaphase plates, in an image converted into electrical signals by a raster process, a dilation is first carried out in several directions, the parameters of which are selected in such a way that the chromosomes of the metaphase plates grow together into uniform structures. Then erosion is carried out in several directions, the parameters of which are chosen so that cells and contaminants disappear, but the metaphase plates which have grown together are retained. A circuit arrangement is described which essentially consists of length discriminators, decision logics, delay memories and input options for digital default values, in which the entire evaluation process runs at the speed of the scanning process.