Extracting grasping cues from tool geometry for digital human models

A system for determining grasping cues for a tool model, the system comprising:

• a processor;
• and
• a memory with computer code instructions stored thereon, the processor and the memory, with the computer code instructions being configured to cause the system to:
• scan a computer-aided design (CAD) model representing a real-world tool to generate a series of sections from the CAD model;
• extract properties of each section of the series of sections;
• automatically identify one or more regions of the CAD model, wherein each identified region is formed of a grouping of successive sections and each region is identified based upon:
• (i) change in extracted properties between successive sections across one or more of the identified regions exceeding a threshold and (ii) a tool family to which the tool represented by the CAD model belongs;
• determine a respective classification for each of the one or more identified regions based upon geometrical properties of the one or more identified regions and the tool family, wherein for each region the tool family indicates the determined respective classifications as a function of expected geometrical properties of real-world tools in the tool family;
• and
• generate grasping cues for the CAD model based upon the determined respective classification for each of the one or more regions.

A non-transitory computer program product for determining grasping cues for a model of a tool, the computer program product executed by a server in communication across a network with one or more clients and comprising:

• a computer readable medium, the computer readable medium comprising program instructions which, when executed by a processor, causes the processor to:
• scan a computer-aided design (CAD) model representing a real-world tool to generate a series of sections from the CAD model;
• extract properties of each section of the series of sections;
• automatically identify one or more regions of the CAD model, wherein each identified region is formed of a grouping of successive sections and each region is identified based upon:
• (i) change in extracted properties between successive sections across one or more of the identified regions exceeding a threshold and (ii) a tool family to which the tool represented by the CAD model belongs;
• determine a respective classification for each of the one or more identified regions based upon geometrical properties of the one or more identified regions and the tool family, wherein for each region the tool family indicates the determined respective classifications as a function of expected geometrical properties of real-world tools in the tool family;
• and
• generate grasping cues for the CAD model based upon the determined respective classification for each of the one or more regions.