System and method for measuring viewpoint fidelity in head mounted display

An apparatus comprising:

• at least one processor;
• and
• at least one non-transitory computer readable memory connected to the at least one processor and including computer program code, wherein the at least one non-transitory computer readable memory and the computer program code are configured, with the at least one processor, to cause the apparatus to:
• generate a virtual environment comprising at least a first shape and a second shape in a virtual viewpoint, wherein the first shape is in front of the second shape in the virtual viewpoint, the second shape is configured to adjust in the virtual viewpoint as the virtual viewpoint adjusts, the second shape is positioned in the virtual environment at a determined offset from the first shape along a test axis, and the first shape is affixed to the virtual viewpoint of the virtual environment, and the virtual viewpoint of the virtual environment is configured to adjust in response to movement of a head mounted display (HMD) on a test stand;
• move a position of the virtual viewpoint with respect to the second shape in response to the movement of the HMD on the test stand;
• record reference data associated with the moving of the position of the virtual viewpoint;
• generate a positional displacement vector by at least comparing reference data of the second shape to reference data of the first shape;
• and
• determine a HMD movement tracking error based on the positional displacement vector.

At least one non-transitory computer-readable storage medium having computer program instructions stored thereon that, when executed by at least one processor, causes the at least one processor to perform:

• generating a virtual environment comprising at least a first shape and a second shape in a virtual viewpoint, wherein the first shape is in front of the second shape in the virtual viewpoint, the second shape is configured to adjust in the virtual viewpoint as the virtual viewpoint adjusts, the second shape is positioned in the virtual environment at a determined offset from the first shape along a test axis, and the first shape is affixed to the virtual viewpoint of the virtual environment, and the virtual viewpoint of the virtual environment is configured to adjust in response to movement of a head mounted display (HMD) on a test stand;
• moving a position of the virtual viewpoint with respect to the second shape in response to the movement of the HMD on the test stand;
• recording reference data associated with the moving of the position of the virtual viewpoint;
• generating a positional displacement vector by at least comparing reference data of the second shape with reference data of the first shape;
• and
• determining a HMD movement tracking error based on the positional displacement vector.