Projection control device converting image data for projection by projector having fisheye lens

A projection control device comprising:

• a controller including one or more processors, the controller being configured to perform:
• an image obtaining process including:
• obtaining first image data captured under an imaging condition;
• a model setting process including:
• obtaining model parameters defining a three-dimensional model represented in a virtual space, the three-dimensional model including a model projection surface, the model projection surface corresponding to a projection surface in a physical space;
• a virtual projector setting process including:
• selecting a target virtual projector from a plurality of virtual projectors based on the imaging condition;
• a pixel-position identifying process including:
• virtually capturing, in the virtual space, second image data representing the model projection surface using a virtual fisheye lens at a virtual lens position, a positional relationship between the virtual lens position and the model projection surface corresponding to a positional relationship between an installation position and the projection surface in the physical space;
• and
• identifying one or more sets of two-dimensional pixel coordinates in the second image data, each of the one or more sets of two-dimensional pixel coordinates corresponding to a portion of the model projection surface;
• a generating process including:
• virtually projecting, in the virtual space, an image based on the first image data onto the model projection surface using the target virtual projector located at a prescribed position;
• and
• generating third image data based on the one or more sets of two-dimensional pixel coordinates and the virtually projected image;
• and
• a projecting process including:
• projecting an image based on the third image data onto the projection surface using a projector including a fisheye lens in a state where the projector is placed at the installation position.

A non-transitory computer readable storage medium having instructions stored thereon that, when executed, cause a controller, which includes one or more processors, to perform:

• an image obtaining process including:
• obtaining first image data captured under an imaging condition;
• a model setting process including:
• obtaining model parameters defining a three-dimensional model represented in a virtual space, the three-dimensional model including a model projection surface, the model projection surface corresponding to a projection surface in a physical space;
• a virtual projector setting process including:
• selecting a target virtual projector from a plurality of virtual projectors based on the imaging condition;
• a pixel-position identifying process including:
• virtually capturing, in the virtual space, second image data representing the model projection surface using a virtual fisheye lens at a virtual lens position, a positional relationship between the virtual lens position and the model projection surface corresponding to a positional relationship between an installation position and the projection surface in the physical space;
• and
• identifying one or more sets of two-dimensional pixel coordinates in the second image data, each of the one or more sets of two-dimensional pixel coordinates corresponding to a portion of the model projection surface;
• a generating process including:
• virtually projecting, in the virtual space, an image based on the first image data onto the model projection surface using the target virtual projector located at a prescribed position;
• and
• generating third image data based on the one or more sets of two-dimensional pixel coordinates and the virtually projected image;
• and
• a projecting process including:
• projecting an image based on the third image data onto the projection surface using a projector including a fisheye lens in a state where the projector is placed at the installation position.