Reference image generation apparatus, display image generation apparatus, reference image generation method, and display image generation method

A reference image generation method by a reference image generation apparatus that generates data of a reference image to be used for generation of a display image when a space including an object of a display target is viewed from any point of view, the reference image representing a picture when the space is viewed from a predetermined reference point of view, comprising:

• displacing the object in the space in accordance with information that defines displacement of the object;
• placing the reference point of view in the space and displacing the reference point of view in response to the displacement of the object;
• and
• generating and outputting the reference image at a predetermined frame rate in a field of view corresponding to the reference point of view to a memory.

A non-transitory computer readable medium having stored thereon a program for a computer, which generates data of a reference image representative of a picture when a space including an object of a display target is viewed from any point of view, the reference image representing a picture when the space is viewed from a predetermined reference point of view, comprising:

• by a space construction unit, displacing the object in the space in accordance with information that defines displacement of the object;
• by a reference point-of-view setting unit, placing the reference point of view in the space and displacing the reference point of view in response to displacement of the object;
• and
• by a reference image data generation unit, generating and outputting the reference image at a predetermined frame rate in a field of view corresponding to the reference point of view.