Method for determining errors in parameters derived from digital object representations

A computer-implemented method for determining errors in at least one parameter of the object derived from a digital representation of an object, wherein the digital representation comprises a number of pixels arranged on a grid, wherein at least one item of image information that quantifies a material-specific value of the object at the position of the pixel is assigned to a pixel, wherein the image information results from a metrological mapping of the object, and is overlaid with statistical noise, wherein as a result of the metrological mapping of the object, the image information of a first pixel is correlated to the image information of pixels within a surroundings of the first pixel defined by a correlation length of the image information, wherein the method comprises the following steps:

• ascertainment of the object representation,
• ascertainment of the correlation length of the object representation,
• ascertainment of a first subset of pixels from the number of pixels, wherein the pixels of the first subset of pixels are spaced apart from one another in the object representation by at least the correlation length,
• ascertainment of the at least one parameter from the image information of the first subset of pixels, and
• ascertainment of an error for the at least one parameter ascertained from the image information of the first subset of pixels,
• characterized in that the correlation length is the correlation length of the noise of the image information of the pixels, and
• characterized in that the correlation length of the noise that overlays the image information is ascertained from the image information of pixels of a subregion of the object representation, wherein the image information within the subregion maps a homogeneous region of the represented object.