“…Our work is influenced by many impressive works in this field, primarily in the geometry-oriented areas of computer vision and medical imaging. Due to space limits, we can mention only a few: [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19]. Most of these works are based on complicated, usually ∞-dimensional, spaces, and the associated representations and computations are, in practice, discretized and/or otherwise approximated.…”