System for determining a three-dimensional position of a testing tool

An injection training system, the system comprising:

• an anatomic training model, the training model configured to receive a tip of a testing tool, the training model comprising an inner cavity;
• a first camera mounted within the cavity, the first camera having a first central viewing axis, wherein the first camera has a first plurality of intrinsic and/or extrinsic parameters;
• and
• a processing unit configured to determine a location of a centroid of emitted light detected in the field of view of the first camera, the light being emitted from the tip of the testing tool at a known three-dimensional position,
• wherein the processing unit is further configured to adjust the first plurality of intrinsic and/or extrinsic parameters based on one or more reference three-dimensional positions and corresponding locations of the centroid of emitted light.

An injection training system, the system comprising:

• a first camera mounted within an anatomic training model, the anatomic training model configured to receive a tip of a testing tool, the first camera having a first central viewing axis;
• a second camera mounted within the anatomic training model, the second camera having a second central viewing axis extending at an angle offset from the first central viewing axis, wherein the first camera is positioned in a superior portion of the anatomic training model and the second camera is positioned in an inferior portion of the anatomic training model, the first and second cameras positioned at a distance from each other, the first central viewing axis extending anteriorly and inferiorly and the second central viewing axis extending anteriorly and superiorly, the first and second cameras each having fields of view configured to detect light emitting from the tip of the testing tool such that relative positions and orientations of the first and second cameras are configured to increase an overlapped region of the field views of the first and second camera;
• and
• a processing unit configured to determine a three-dimensional position of the tip of the testing tool based at least on locations of the centroids of emitted light detected in the fields of view of the first and second cameras.