  In traumatic medical emergencies, the patients heavily depend on cranioplasty
- the craft of neurocranial repair using cranial implants. Despite the
improvements made in recent years, the design of a patient-specific implant
(PSI) is among the most complex, expensive, and least automated tasks in
cranioplasty. Further research in this area is needed. Therefore, we created a
prototype application with a graphical user interface (UI) specifically
tailored for semi-automatic implant generation, where the users only need to
perform high-level actions. A general outline of the proposed implant
generation process involves setting an area of interest, aligning the
templates, and then creating the implant in voxel space. Furthermore, we show
that the alignment can be improved significantly, by only considering clipped
geometry in the vicinity of the defect border. The software prototype will be
open-sourced at https://github.com/3Descape/Cranial_Implant_Design
