System and method for providing personalized transactions based on 3D representations of user physical characteristics

A system for determining fitting characteristics of an item for a user body part, the system comprising a processor and a memory communicably connected to the processor, the memory comprising instructions which, upon being executed by the processor, cause the processor to:

• access a three-dimensional (3D) reconstructed model of the body part;
• access information about one or more 3D reference models of the item, the information for each 3D reference model including respective dimensional measurement, spatial, and geometrical characteristics;
• perform a 3D matching process based on the 3D reconstructed model and the accessed information about the one or more 3D reference models to determine a best-fitting 3D reference model from the one or more 3D reference models;
• integrate the best-fitting 3D reference model with the 3D reconstructed model to provide a 3D best fit representation;
• and
• display, on a display device communicably connected to the processor, the 3D best fit representation along with visual indications of user-item fit characteristics;
• wherein the visual indications of user-item fit characteristics represent local voids and local collisions between the best-fitting 3D reference model and the 3D reconstructed model, a local void being identified by a local gap between the best-fitting 3D reference model and the 3D reconstructed model, a local collision being identified by the 3D reconstructed model locally overlapping the best-fitting 3D reference model;
• wherein areas where the user-item fit characteristics are determined comprise pre-defined target areas associated with the best-fitting 3D reference model or the 3D reconstructed model;
• and
• wherein the visual indications of user-item fit characteristics represent local voids having a corresponding volume above a first threshold, and local collisions having a corresponding volume above a second threshold.