Work information projection system and relative information calibration method

A work information projection system, comprising:

• a projector that projects an auxiliary image that assists work onto a workplace;
• a camera that captures the workplace;
• a memory;
• and
• a controller, connected to the memory, that creates the auxiliary image and transmits it to the projector,
• wherein, during a calibration process of calibrating relative information that indicates a relative positional relation between the camera and the projector;
• the camera captures a calibration image projected by the projector onto a calibration jig through a reflector, and
• the controller performs the calibration process of calibrating the relative information based on the calibration image captured by the camera,
• wherein:
• the camera captures the calibration image through the reflector during the calibration process, and
• the camera captures the workplace without the reflector during the work when the auxiliary image is projected onto the workplace.

A work information projection system, comprising:

• a projector that projects an auxiliary image that assists work onto a workplace;
• a camera that captures the workplace;
• a memory;
• and
• a controller, connected to the memory, that creates the auxiliary image and transmits it to the projector,
• wherein, during a calibration process of calibrating relative information that indicates a relative positional relation between the camera and the projector;
• the camera captures a calibration image projected by the projector onto a calibration jig through a reflector, and
• the controller performs the calibration process of calibrating the relative information based on the calibration image captured by the camera,
• wherein, during the calibration process:
• the controller calculates a positional relation between the camera and the reflector based on the reflector included in an image captured by the camera,
• the controller calculates a positional relation between the camera and a virtual camera based on the positional relation between the camera and the reflector, and
• the controller calculates a positional relation between the projector and the virtual camera based on the calibration image reflected in the reflector and calibrates the relative information.