Fig. 13
Example of low to no contrast entities. (a) Slice from sub-volume V6 (3072,7168,0) (see Fig. 11(b)) presumably showing a screw and its corresponding nut. No appreciable grey value and texture differences between the two components can be determined. (b) possible semantic annotation with an orange screw (
) and a light green nut (
) inside a blue structure (
); (c) grey value profile plot along the green dashed section marked in the left subfigure, where the background colours indicate the possible annotation into the semantic segments.
