The images of structures captured in a µCT scanner may have a slight bow or warp to them. The process of straightening is especially interesting in case of flat geometries and can be used to make the structure model in the image lie flat again. For this, a surface with a given Surface Degree is fitted through the structure and aligned to a Sheet Plane.

Select the sheet plane to be in X-Y, X-Z, or Y-Z direction or let the direction be estimated Automatically.

If you check Automatic Threshold the structure resulting from the Otsu threshold is straightened. Otherwise enter a Manual Threshold.

Click Apply to straighten the structure with the current settings.

Example: Here, the bow of a granular structure is removed by applying the straightening process. The bow can be observed in the 2D Slice Visualization section. Here, the first and the last X-slice are shown. Observe the bow in both slices and also in the X-direction, by comparing the two slices. Applying Straighten with default settings leads to a straightened structure, shown in 2D and in 3D.