A method for generating a digital representation of an annulus structure of a valve from a segmented digital representation of a human internal organ, comprising the steps of: a) providing an input segmented digital representation of a plurality of portions of a human internal organ comprising an annulus structure of a valve, wherein the input segmented digital representation provides labels for the portions of the digital representation, which labels indicate specific properties of the respective portion and/or belonging of the respective portion to a specific anatomic structure; wherein the digital representation comprises, and/or is based on, image data for three spatial dimensions for each of at least one effective time point; b) automatically determining, for at least a first effective time point, based on the labels of the provided input segmented digital representation, a candidate plane, and/or a candidate orientation vector together with a candidate center point, arranged with respect to the input segmented digital representation for the first effective time point; c) determining a plurality of selecting cross-sections (120, 130, 140) with respect to the input segmented digital representation at the first effective time point, wherein the selecting cross-sections (120, 130, 140) are arranged essentially orthogonally to the candidate plane and/or essentially comprise the candidate center point and the candidate orientation vector; d) determining a plurality of candidate points (121, 122, 132, 133, 151) within the selecting cross-sections (120, 130, 140) for the annulus structure at the first effective time point; e) automatically generating a candidate spline interpolation for the first effective time point using the determined candidate points (121, 122, 132, 133, 151) as support points; f) automatically adapting the candidate spline interpolation for the first effective time point based on the input segmented digital representation; and g) generating a digital representation of the annulus structure at the first effective time point based on the adapted candidate spline interpolation; wherein the candidate plane and/or the candidate orientation vector together with the candidate center point is automatically determined using a support vector machine trained to separate differently labelled portions. a) providing an input segmented digital representation of a plurality of portions of a human internal organ comprising an annulus structure of a valve, wherein the input segmented digital representation provides labels for the portions of the digital representation, which labels indicate specific properties of the respective portion and/or belonging of the respective portion to a specific anatomic structure; wherein the digital representation comprises, and/or is based on, image data for three spatial dimensions for each of at least one effective time point; b) automatically determining, for at least a first effective time point, based on the labels of the provided input segmented digital representation, a candidate plane, and/or a candidate orientation vector together with a candidate center point, arranged with respect to the input segmented digital representation for the first effective time point; c) determining a plurality of selecting cross-sections (120, 130, 140) with respect to the input segmented digital representation at the first effective time point, wherein the selecting cross-sections (120, 130, 140) are arranged essentially orthogonally to the candidate plane and/or essentially comprise the candidate center point and the candidate orientation vector; d) determining a plurality of candidate points (121, 122, 132, 133, 151) within the selecting cross-sections (120, 130, 140) for the annulus structure at the first effective time point; e) automatically generating a candidate spline interpolation for the first effective time point using the determined candidate points (121, 122, 132, 133, 151) as support points; f) automatically adapting the candidate spline interpolation for the first effective time point based on the input segmented digital representation; and g) generating a digital representation of the annulus structure at the first effective time point based on the adapted candidate spline interpolation;