1. A system for producing a representation of an anatomical object in image data, based on a template coupled to a model of the object, the system comprising: a model unit for adapting the model to the object in the image data; a template unit for adapting the template to the adapted model on the basis of the coupling between the template and the model, wherein the template unit adapts the template such that a plane of the template is defined by three non co-linear points defined by features of the adapted model; and an image unit for producing an image of the template, wherein the image of the template comprises at least three orthogonal projections of the template along the principal axes of an inertia tensor of the template, wherein the template comprises a first portion and a second portion, and wherein the image unit is arranged for producing a first portion of the image, based on the first portion of the template, using a first visual pattern, and a second portion of the image, based on the second portion of the template, using a second visual pattern.