REFINEMENT OF IMAGE SEGMENTATION

A computer-implemented method comprising: receiving an image including an object depicted in the image; obtaining initial segmentation data defining segmentation of the image, the initial segmentation data comprising a first contour around the object; rendering the image and the first contour on a user display; providing a user-interface tool enabling a user to refine the first contour to define a refined line replacing a part of the first contour to thereby form a second contour around the object, wherein the user uses the tool to draw a user-drawn line on the rendered image and the refined line comprises at least the user-drawn line; and rendering the second contour on the image in place of the first.