Abstract: In a microscope, a position signal is generated in the form of coordinates in a pixel coordinate system by registering microscope images with partly overlapping contents. The position signal can be used to indicate the position of a partial object which has been identified in one of the microscope images. It can also be used to control the displacement of the microscope stage of the microscope, in which case it is possible to use a simple inaccurate drive mechanism for the microscope stage, without necessitating installation of position sensors.

Abstract: A method is disclosed for determining a sought object contour in a digital microscope image, which includes a plurality of image elements and reproduces a biological material. The method includes assigning edge values to at least a first subset of the image elements in the image; assigning values of a first gradient vector component whose values each includes a first linear combination of edge values of some surrounding image elements to at least a second subset of the image elements in the image; assigning values of a second gradient vector component whose values each include a second linear combination of edge values of some surrounding image elements to at least a third subset of the image elements in the image; and calculating an estimate of the sought object contour based upon values of the first and second gradient vector components.

Abstract: Abstract: In a microscope, a position signal is generated in the form of coordinates in a pixel coordinate system by registering microscope images with partly overlapping contents. The position signal can be used to indicate the position of a partial object which has been identified in one of the microscope images. It can also be used to control the displacement of the microscope stage of the microscope, in which case it is possible to use a simple inaccurate drive mechanism for the microscope stage, without necessitating installation of position sensors.