Image processing device, image processing system, image display method, and image processing program

An image display method for causing a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue, the image display method comprising:

• acquiring, by a computer, tomographic data as the three-dimensional data, the tomographic data including a plurality of cross-sectional images of the biological tissue;
• generating, by the computer, the three-dimensional image based on the plurality of cross-sectional images;
• forming, by the computer, in the three-dimensional data, a cutting region for exposing a lumen of the biological tissue in the three-dimensional image;
• generating, by the computer, a two-dimensional image representing a portion corresponding to the cutting region in one of the plurality of cross-sectional images;
• displaying, by the computer, the two-dimensional image at a position corresponding to a cross-sectional position of the one of the plurality of cross-sectional images in the three-dimensional image;
• setting, by the computer, a viewpoint when the three-dimensional image is displayed by positioning a virtual camera in a three-dimensional space;
• wherein in a case where the virtual camera is not on a plane corresponding to the cross-sectional position in the three-dimensional image, the displaying, on the display, the two-dimensional image on the plane;
• and
• wherein in a case where the virtual camera is on the plane, the displaying, on the display, the two-dimensional image in inclination with respect to the plane.

An image processing device configured to cause a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue, the image processing device comprising:

• a control unit configured to:
• acquire tomographic data as the three-dimensional data, the tomographic data including a plurality of cross-sectional images of the biological tissue;
• generate the three-dimensional image based on the plurality of cross- sectional images;
• form, in the three-dimensional data, a cutting region for exposing a lumen of the biological tissue in the three-dimensional image;
• generate a two-dimensional image representing a portion corresponding to the cutting region in one of the plurality of cross-sectional images;
• display, on the display, the two-dimensional image at a position corresponding to a cross-sectional position of the one of the plurality of cross-sectional images in the three-dimensional image;
• set a viewpoint when the three-dimensional image is displayed by positioning a virtual camera in a three-dimensional space;
• wherein the control unit is configured to display, on the display, the two-dimensional image in inclination obliquely downward with respect to the plane in a case where the virtual camera is above a plane corresponding to the cross-sectional position in the three-dimensional image;
• and
• wherein the control unit is configured to display, on the display, the two-dimensional image in inclination obliquely upward with respect to the plane in a case where the virtual camera is below the plane.

An image display method for causing a display to display, as a three-dimensional image, three-dimensional data representing a biological tissue, the image display method comprising:

• acquiring, by a computer, tomographic data as the three-dimensional data, the tomographic data including a plurality of cross-sectional images of the biological tissue;
• generating, by the computer, the three-dimensional image based on the plurality of cross-sectional images;
• forming, by the computer, in the three-dimensional data, a cutting region for exposing a lumen of the biological tissue in the three-dimensional image;
• generating, by the computer, a two-dimensional image representing a portion corresponding to the cutting region in one of the plurality of cross-sectional images;
• displaying, on the display, the two-dimensional image at a position corresponding to a cross-sectional position of the one of the plurality of cross-sectional images in the three-dimensional image;
• setting, by the computer, a viewpoint when the three-dimensional image is displayed by positioning a virtual camera in a three-dimensional space;
• wherein the computer is configured to display, on the display, the two-dimensional image in inclination obliquely downward with respect to the plane in a case where the virtual camera is above a plane corresponding to the cross-sectional position in the three-dimensional image;
• and
• wherein the computer is configured to display, on the display, the two-dimensional image in inclination obliquely upward with respect to the plane in a case where the virtual camera is below the plane.