Method and apparatus for comparing and determining three-dimensional identity of tool mark

An apparatus for comparing and determining three-dimensional (3D) identity of a tool mark, the apparatus comprising:

• a 3D image acquisition unit configured to obtain a 3D image of a suspect tool and a tool mark;
• a contact portion extraction unit configured to extract a contact portion of the suspect tool contributed to formation of the tool mark from the 3D image of the suspect tool;
• a matching area determination unit configured to compare a shape of the contact portion of the suspect tool with a shape of the tool mark to determine a matching area;
• and
• a matching rate calculation unit configured to calculate a matching rate between the contact portion of the suspect tool and the tool mark.