Image display device, image display method, and computer readable recording device

An image display method that is executed by an image display device that is capable of displaying a screen for allowing a user to perceive a virtual space, comprising the steps of:

• (a) obtaining information related to a real-life space in which the image display device exists;
• (b) recognizing, based on the information, a particular object that exists in the real-life space;
• (c) placing an image of the object in a particular plane within the virtual space;
• (d) providing, in the plane, a plurality of determination points used for recognizing the image of the object and placing, in the plane, a manipulation object that is manipulated by the image of the object and that moves over the plurality of determination points;
• (e) determining whether each of the plurality of determination points is in either a first state, in which the image of the object is superimposed, or in a second state, in which the image of the object is not superimposed;
• and
• (f) updating a position of the manipulation object depending on a determination result in step (e).

A computer-readable recording device having an image display program stored thereon to be executed by an image display device that is capable of displaying a screen for allowing a user to perceive a virtual space, the image display program causing the image display device to execute the steps of:

• (a) obtaining information related to a real-life space in which the image display device exists;
• (b) recognizing, based on the information, a particular object that exists in the real-life space;
• (c) placing an image of the object in a particular plane within the virtual space;
• (d) providing, in the plane, a plurality of determination points used for recognizing the image of the object and placing, in the plane, a manipulation object that is manipulated by the image of the object and that moves over the plurality of determination points;
• (e) determining whether each of the plurality of determination points is in either a first state, in which the image of the object is superimposed, or in a second state, in which the image of the object is not superimposed;
• and
• (f) updating a position of the manipulation object depending on a determination result in step (e).