Per Rønsholt Andresen

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From a set of longitudinal three-dimensional scans of the same anatomical structure, we have accurately modeled the temporal shape and size changes using a linear shape model. On a total of 31 computed tomography scans of the mandible from six patients, 14,851 semilandmarks are found automatically using shape features and a new algorithm called(More)
Assume that only partial knowledge about a non-rigid registration is given: certain points, curves or surfaces in one 3D image are known to map to certain points, curves or surfaces in another 3D image. In trying to identify the non-rigid displacement field, we face a generalized aperture problem since along the curves and surfaces, point correspondences(More)
From a set of temporally separated scannings of the same anatomical structure we w i s h t o i d e n tify and analyze the growth in terms of a metamorphosis. That is, we study the temporal change of shape which m a y provide an understanding of the biological processes which govern the growth process. We subdivide the growth analysis into growth simulation,(More)
An automated system for registration of tail bleeding in rats using a camera and a user-designed PC-based software program has been developed. The live and processed images are displayed on the screen and are exported together with a text file for later statistical processing of the data allowing calculation of e.g. number of bleeding episodes, bleeding(More)
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