Three-dimensional image display method, three-dimensional image display device, and recording medium

A three-dimensional image display device comprising:

• a processor comprising hardware, wherein the processor is configured to:
• acquire a first image that is a two-dimensional image of a subject;
• calculate three-dimensional coordinates of a plurality of points on the subject on the basis of the first image;
• display a second image on the display, the second image representing an image of the subject seen in a first direction from a first viewpoint, the second image being one of the first image and a three-dimensional image of the subject generated on the basis of the three-dimensional coordinates of the plurality of points;
• accept input of at least one reference point, the at least one reference point being on a region included in the second image and being included in the plurality of points;
• calculate a reference figure on the basis of three-dimensional coordinates of at least two points that have been set on the basis of the at least one reference point, the at least two points being included in the plurality of points;
• calculate a second direction different from the first direction and a second viewpoint different from the first viewpoint on the basis of the reference figure;
• generate a third image on the basis of the three-dimensional coordinates of the plurality of points, the third image being a three-dimensional image of the subject seen in the second direction from the second viewpoint;
• and
• display the third image and information representing a position of the reference figure on the third, on the display.

A non-transitory computer-readable recording medium saving a program for causing a computer to execute:

• acquiring a first image that is a two-dimensional image of a subject;
• calculating three-dimensional coordinates of a plurality of points on the subject on the basis of the first image;
• displaying a second image on the display, the second image representing an image of the subject seen in a first direction from a first viewpoint, the second image being one of the first image and a three-dimensional image of the subject generated on the basis of the three-dimensional coordinates of the plurality of points;
• accepting input of at least one reference point, the at least one reference point being on a region included in the second image and being included in the plurality of points;
• calculating a reference figure on the basis of three-dimensional coordinates of at least two points that have been set on the basis of the at least one reference point, the at least two points being included in the plurality of points;
• calculating a second direction different from the first direction and a second viewpoint different from the first viewpoint on the basis of the reference figure;
• generating a third image on the basis of the three-dimensional coordinates of the plurality of points, the third image being a three-dimensional image of the subject seen in the second direction from the second viewpoint;
• and
• displaying the third image and information representing a position of the reference figure superimposed on the third image, on the display.

A three-dimensional image display method comprising:

• acquiring a first image that is a two-dimensional image of a subject;
• calculating three-dimensional coordinates of a plurality of points on the subject on the basis of the first image;
• displaying a second image on a display, the second image representing an image of the subject seen in a first direction from a first viewpoint, the second image being one of the first image and a three-dimensional image of the subject generated on the basis of the three-dimensional coordinates of the plurality of points;
• accepting input of at least one reference point, the at least one reference point being on a region included in the second image and being included in the plurality of points;
• calculating a reference figure on the basis of three-dimensional coordinates of at least two points that have been set on the basis of the at least one reference point, the at least two points being included in the plurality of points;
• calculating a second direction different from the first direction and a second viewpoint different from the first viewpoint on the basis of the reference figure;
• generating a third image on the basis of the three-dimensional coordinates of the plurality of points, the third image being an image of the subject seen in the second direction from the second viewpoint;
• and
• displaying the third image and information representing a position of the reference figure superimposed on the third image, on the display.