Fig. 2

Multiple surface extraction on a synthetic 3D image. A,B The image contains 3 phantom surfaces (S1, S2, S3) of different shapes (sinusoidal, flat, and paraboloidal, respectively), and different textures (surface S1 has constant intensity, while surfaces S2 and S3 are supported by Voronoi meshes of different cell sizes). C 3D representations of the height maps extracted by Zellige (in green) and of the ground truth (GT, in blue) height maps of surfaces S1, S2, and S3. D Error maps displaying the distance along the z-axis between the reconstructed and GT height maps for surfaces S1, S2, and S3. E Projections of the 3D image localized to the different surfaces S1–S3 (maximum intensity projections over a subvolume of a width δz=1 pixel above or below the corresponding height maps). Upper and lower panels show the projections based on the GT and the reconstructed height maps, respectively