JPWO2020044576A1 - Display control device, display control method and display control program - Google Patents

Abstract

Provided are a display control device, a display control method, and a display control program that can easily grasp the three-dimensional positional relationship of a plurality of cut surfaces when displaying a cross-sectional image obtained by cutting an object on a plurality of cut surfaces. The display control device 10 views the first cross-sectional image obtained by cutting the object 100 on the first surface and the second cross-sectional image obtained by cutting the object 100 on the second surface intersecting the first surface in a plan view. The first display control unit 12 to be displayed on the display unit 10f, the first cross-sectional image is displayed on the display unit 10f along the first surface, and the second cross-sectional image is displayed on the display unit 10f along the second surface. 2 The display control unit 13 and a switching unit 15 for switching between a display by the first display control unit 12 and a display by the second display control unit 13 based on the input.

Description

The present invention relates to a display control device, a display control method, and a display control program.

Conventionally, tomography techniques such as X-ray CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) have been used. Computed tomography may be performed on, for example, a body axis cross section, a sagittal section, a coronal section, or the like, and may be displayed side by side on a display unit.

For example, in Patent Document 1 below, the test data of a subject is read, at least one virtual contraband image is inserted into the 3D test image obtained from the test data, and at least one virtual contraband image is inserted in the selected area. A security check CT system that provides feedback on the inclusion of is described.

Further, in Patent Document 2 below, the location of the main tracheal bifurcation is determined from a plurality of CT images, and the x-coordinate, y-coordinate and z-coordinate for each pixel in each CT image with the main tracheal bifurcation as the origin are set for the voxel. A CT alignment system that displays a 3D model as coordinates is described.

Japanese Unexamined Patent Publication No. 2016-8966 Special Table 2017-523826

When displaying cross-sectional images of a plurality of cut surfaces side by side, it may be possible to adjust each cut surface. The user can adjust the cut surface to observe the desired site from multiple directions.

However, when trying to observe the same part on two or more cut surfaces or grasping the three-dimensional positional relationship of a plurality of cut surfaces, adjustment may be difficult.

Therefore, the present invention presents a display control device, a display control method, and a display control that can easily grasp the three-dimensional positional relationship of a plurality of cut surfaces when displaying a cross-sectional image obtained by cutting an object on a plurality of cut surfaces. Provide a program.

The display control device according to one aspect of the present invention has a first cross-sectional image obtained by cutting the object on the first surface and a second cross-sectional image obtained by cutting the object on the second surface intersecting the first surface. The first display control unit that is displayed on the display unit so as to be viewed in a plan view, the first cross-sectional image is displayed on the display unit along the first surface, and the second cross-sectional image is displayed on the display unit along the second surface. It includes a second display control unit and a switching unit that switches between a display by the first display control unit and a display by the second display control unit based on the input.

According to this aspect, a plurality of cuts can be made by switching between a display mode in which a plurality of cross-sectional images obtained by cutting an object on a plurality of surfaces are viewed in a plan view and a display mode in which the cross-sectional images are displayed along the cut surfaces. The three-dimensional positional relationship of the surfaces can be easily grasped.

In the above embodiment, when the switching unit switches between the display by the first display control unit and the display by the second display control unit, the first animation that transitions from the display by the first display control unit to the display by the second display control unit. Alternatively, a third display control unit that causes the display unit to display a second animation that transitions from the display by the second display control unit to the display by the first display control unit may be further provided.

According to this aspect, by displaying the first animation or the second animation, it becomes easier to grasp the three-dimensional positional relationship of the plurality of cut surfaces.

In the above aspect, the second display control unit modifies the first cross-sectional image so as to follow the movement of the first surface based on the input of moving the first surface in the first direction intersecting the first surface. , The second cross-sectional image may be modified to follow the movement of the second surface based on the input of moving the second surface in the second direction intersecting the second surface.

According to this aspect, the three-dimensional positional relationship of the plurality of cut surfaces can be easily grasped by changing the cross-sectional image according to the movement of the cut surface.

In the above aspect, if at least one of the first cross-sectional image and the second cross-sectional image is changed by the second display control unit and then the display is switched by the switching unit, the first display control unit is changed. The first cross-sectional image and the changed second cross-sectional image may be displayed on the display unit so as to be viewed in a plan view.

According to this aspect, when the cross-sectional image is changed by moving the cut surface, it is possible to switch to the display mode in which a plurality of cross-sectional images are viewed in a plane, and the three-dimensional positional relationship of the plurality of cut surfaces can be grasped. While doing so, each cross-sectional image can be confirmed in detail.

In the above aspect, the second display control unit may display a third cross-sectional image obtained by cutting the object on the third surface separated from the first surface in the first direction on the display unit along the third surface. ..

According to this aspect, by displaying the third cross-sectional image along the third surface, the object can be observed from a wider variety of cuts.

In the above aspect, the first direction may be the normal direction of the first surface, and the second direction may be the normal direction of the second surface.

According to this aspect, the moving directions of the first surface and the second surface can be easily grasped, and the first cross-sectional image and the second cross-sectional image can be easily changed to a desired image.

In the above aspect, the first surface and the second surface may be orthogonal to each other.

According to this aspect, the positional relationship between the first surface and the second surface can be easily grasped, and the three-dimensional positional relationship of the plurality of cut surfaces can be easily grasped.

In the display control method according to another aspect of the present invention, a first cross-sectional image obtained by cutting the object on the first surface and a second cross-sectional image obtained by cutting the object on the second surface intersecting the first surface are obtained. The first step of displaying the images on the display unit so as to be viewed in a plane, the first step of displaying the first cross-sectional image on the display unit along the first surface, and displaying the second cross-sectional image on the display unit along the second surface. It includes two steps and a third step of switching between the display by the first step and the display by the second step based on the input.

According to this aspect, a plurality of cuts can be made by switching between a display mode in which a plurality of cross-sectional images obtained by cutting an object on a plurality of surfaces are viewed in a plan view and a display mode in which the cross-sectional images are displayed along the cut surfaces. The three-dimensional positional relationship of the surfaces can be easily grasped.

In the display control program according to another aspect of the present invention, the display control program includes a first cross-sectional image obtained by cutting an object on the first surface of a computer provided in the display control device, and a second surface where the object intersects the first surface. The first display control unit and the first cross-sectional image are displayed on the display unit along the first surface, and the second cross-sectional image is displayed on the display unit so as to display the second cross-sectional image cut in It functions as a second display control unit to be displayed on the display unit along the two surfaces, and as a switching unit for switching between the display by the first display control unit and the display by the second display control unit based on the input.

According to this aspect, a plurality of cuts can be made by switching between a display mode in which a plurality of cross-sectional images obtained by cutting an object on a plurality of surfaces are viewed in a plan view and a display mode in which the cross-sectional images are displayed along the cut surfaces. The three-dimensional positional relationship of the surfaces can be easily grasped.

According to the present invention, when displaying a cross-sectional image obtained by cutting an object on a plurality of cut surfaces, a display control device, a display control method, and a display control that can easily grasp the three-dimensional positional relationship of the plurality of cut surfaces. The program is provided.

It is a figure which shows the functional block of the display control apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the physical structure of the display control device which concerns on this embodiment. This is a first example of a cross-sectional image displayed in the second display mode of the display control device according to the present embodiment. This is a first example of a cross-sectional image displayed in the first display mode of the display control device according to the present embodiment. This is an example of the first animation and the second animation displayed by the display control device according to the present embodiment. This is a second example of a cross-sectional image displayed in the second display mode of the display control device according to the present embodiment. This is a second example of a cross-sectional image displayed in the first display mode of the display control device according to the present embodiment. It is a flowchart of the display control processing executed by the display control apparatus which concerns on this embodiment. This is a first example of a cross-sectional image displayed in the second display mode of the display control device according to the second embodiment. This is a first example of a cross-sectional image displayed in the first display mode of the display control device according to the present embodiment. It is a flowchart of the display control processing executed by the display control apparatus which concerns on this embodiment.

Hereinafter, embodiments according to one aspect of the present invention (hereinafter, referred to as “the present embodiment”) will be described with reference to the drawings. In each figure, those having the same reference numerals have the same or similar configurations.

[First Embodiment]
FIG. 1 is a diagram showing a functional block of the display control device 10 according to the first embodiment of the present invention. The display control device 10 according to the first embodiment includes a communication unit 10d, an input unit 10e, a display unit 10f, a storage unit 11, a first display control unit 12, a second display control unit 13, a third display control unit 14, and switching. The unit 15 is provided.

The imaging device 50 may be an X-ray CT apparatus or an MRI apparatus, and may capture a cross-sectional image of the object 100 by an existing technique. The photographing device 50 captures a cross-sectional image obtained by cutting the object 100 on three planes orthogonal to each other, or performs MPR (Multi Planar Reconstruction) for forming a cross-sectional image obtained by cutting the object 100 on an arbitrary plane. , Curved-MPR that constitutes a cross-sectional image obtained by cutting the object 100 with an arbitrary curved surface may be performed.

The object 100 is an object to be photographed by the photographing device 50, and may be, for example, a person or an animal, or an article to be inspected. Further, the object 100 may be a virtual object, for example, an object composed of polygons. The communication network N may be any communication network such as a LAN (Local Area Network) or the Internet.

The display control device 10 is connected to the photographing device 50 by the communication unit 10d via the communication network N, and acquires a cross-sectional image of the object 100 photographed by the photographing device 50. The storage unit 11 stores the acquired cross-sectional image at least temporarily. When the object 100 is a virtual object, it is not necessary to take a cross-sectional image by the photographing device 50, and the storage unit 11 stores information about the virtual object.

The first display control unit 12 views the first cross-sectional image obtained by cutting the object 100 on the first surface and the second cross-sectional image obtained by cutting the object 100 on the second surface intersecting the first surface, respectively. The display unit 10f is displayed as such. Hereinafter, the display mode by the first display control unit 12 is referred to as the first display mode. The first display control unit 12 may display the first cross-sectional image and the second cross-sectional image side by side on one plane. The first surface and the second surface may be a flat surface or a curved surface. Further, the first surface and the second surface may be orthogonal to each other, and in that case, the positional relationship between the first surface and the second surface can be easily grasped, and the three-dimensional positional relationship of the plurality of cut surfaces can be grasped. It will be easier. The first display control unit 12 may display a third cross-sectional image obtained by cutting the object 100 on a third surface other than the first surface and the second surface on the display unit 10f, or may display four or more cross-sectional images. May be displayed on the display unit 10f. When the object 100 is a virtual object, the first display control unit 12 obtains a first cross-sectional image obtained by cutting the virtual object on the first surface and a second cross-sectional image obtained by cutting the virtual object on the second surface. It may be composed of polygons or the like and displayed on the display unit 10f so as to be viewed in a plane.

The second display control unit 13 causes the display unit 10f to display the first cross-sectional image along the first surface, and causes the display unit 10f to display the second cross-sectional image along the second surface. Hereinafter, the display mode by the second display control unit 13 is referred to as a second display mode. For example, when the first surface is an XY surface that intersects the Z axis at a predetermined position and the second surface is a YZ surface that intersects the X axis at a predetermined position, the second display control unit 13 displays the first cross-sectional image. It may be displayed so as to overlap the XY surface, and the second cross-sectional image may be displayed so as to overlap the YZ surface. The second display control unit 13 may display a third cross-sectional image obtained by cutting the object 100 on a third surface other than the first surface and the second surface on the display unit 10f, or may display four or more cross-sectional images. May be displayed on the display unit 10f. When the object 100 is a virtual object, the second display control unit 13 obtains a first cross-sectional image obtained by cutting the virtual object on the first surface and a second cross-sectional image obtained by cutting the virtual object on the second surface. It may be composed of polygons or the like, the first cross-sectional image may be displayed on the display unit 10f along the first surface, and the second cross-sectional image may be displayed on the display unit 10f along the second surface.

The switching unit 15 switches between the display by the first display control unit 12 and the display by the second display control unit 13 based on the input from the input unit 10e. The user can three-dimensionally grasp the positional relationship between the first cross-sectional image and the second cross-sectional image by displaying the cross-sectional image by the second display control unit 13, and can switch the display mode to display the first display control unit 12 By displaying the cross-sectional image by, the first cross-sectional image and the second cross-sectional image can be viewed in a plan view and the details can be observed. As described above, according to the display control device 10 according to the present embodiment, the first display mode in which a plurality of cross-sectional images obtained by cutting the object 100 on a plurality of surfaces are viewed in a plan view and the cross-sectional images are displayed along the cut surfaces. By switching between the second display mode for displaying, the three-dimensional positional relationship of a plurality of cut surfaces can be easily grasped.

When the switching unit 15 switches between the display by the first display control unit 12 and the display by the second display control unit 13, the third display control unit 14 changes from the display by the first display control unit 12 to the second display control unit. The display unit 10f displays the first animation that transitions to the display by 13 or the second animation that transitions from the display by the second display control unit 13 to the display by the first display control unit 12. By displaying the first animation or the second animation connecting between the display of the three-dimensional cross-sectional image by the second display control unit 13 and the display of the flat cross-sectional image by the first display control unit 12, a plurality of animations are displayed. It becomes easier to grasp the three-dimensional positional relationship of the cut surface.

FIG. 2 is an image showing the physical configuration of the display control device 10 according to the present embodiment. The display control device 10 includes a CPU (Central Processing Unit) 10a corresponding to a calculation unit, a RAM (Random Access Memory) 10b corresponding to a storage unit 11, and a ROM (Read Only Memory) 10c corresponding to the storage unit 11. It has a communication unit 10d, an input unit 10e, and a display unit 10f. Each of these configurations is connected to each other via a bus so that data can be transmitted and received. In this example, the case where the display control device 10 is composed of one computer will be described, but the display control device 10 may be realized by combining a plurality of computers. Further, the configuration shown in FIG. 2 is an example, and the display control device 10 may have configurations other than these, or may not have a part of these configurations.

The CPU 10a is a control unit that controls execution of a program stored in the RAM 10b or ROM 10c, calculates data, and processes data. The CPU 10a is a calculation unit that executes a program (display control program) that controls the display of a cross-sectional image. The CPU 10a receives various data from the input unit 10e and the communication unit 10d, displays the calculation result of the data on the display unit 10f, and stores it in the RAM 10b or the ROM 10c.

The RAM 10b is a storage unit capable of rewriting data, and may be composed of, for example, a semiconductor storage element. The RAM 10b may store a display control program, a cross-sectional image, or the like executed by the CPU 10a. It should be noted that these are examples, and data other than these may be stored in the RAM 10b, or a part of these may not be stored.

The ROM 10c is a storage unit capable of reading data, and may be composed of, for example, a semiconductor storage element. The ROM 10c may store, for example, a display control program or data that is not rewritten.

The communication unit 10d is an interface for connecting the display control device 10 to another device such as the photographing device 50. The communication unit 10d may be connected to a communication network N such as a LAN.

The input unit 10e receives data input from the user, and may include, for example, a keyboard, a pointing device, and a touch panel.

The display unit 10f visually displays the calculation result by the CPU 10a, and may be configured by, for example, an LCD (Liquid Crystal Display). The display unit 10f may display a cross-sectional image acquired from the photographing device 50.

The display control program may be stored in a storage medium readable by a computer such as a RAM 10b or a ROM 10c and provided, or may be provided via a communication network N connected by a communication unit 10d. In the display control device 10, the CPU 10a executes the display control program to realize various operations described with reference to FIG. It should be noted that these physical configurations are examples and do not necessarily have to be independent configurations. For example, the display control device 10 may include an LSI (Large-Scale Integration) in which the CPU 10a and the RAM 10b or ROM 10c are integrated.

FIG. 3 is a first example of a cross-sectional image displayed in the second display mode of the display control device 10 according to the present embodiment. In this example, three cross-sectional images obtained by cutting the object 100 on three different surfaces are displayed along the cut surfaces. Specifically, the upper cross-sectional image T1 obtained by cutting the object 100 on the XY plane intersecting the Z axis at a predetermined position, and the front cross-sectional image F1 obtained by cutting the object 100 on the YZ plane intersecting the X axis at a predetermined position. , The right cross-sectional image S1 obtained by cutting the object 100 on the XZ plane intersecting the Y axis at a predetermined position is displayed.

The upper sectional image T1, the front sectional image F1, and the right sectional image S1 are displayed so as to be orthogonal to each other and intersect with each other. The user arbitrarily adjusts the observation direction (direction of the virtual camera) of the upper sectional image T1, the front sectional image F1 and the right sectional image S1 to obtain the upper sectional image T1, the front sectional image F1 and the right sectional image from various angles. S1 can be observed.

In the figure, a check box CB indicated as "3D" is displayed and checked. When the check box CB is checked, the display control device 10 displays a plurality of cross-sectional images of the object 100 in the second display mode by the second display control unit 13. On the other hand, when the check box CB is unchecked, the display control device 10 displays a plurality of cross-sectional images of the object 100 in the first display mode by the first display control unit 12. The display in the first display mode will be described in detail with reference to the following figure. The switching unit 15 of the display control device 10 switches between the display by the first display control unit 12 and the display by the second display control unit 13 based on the input to the check box CB.

FIG. 4 is a first example of a cross-sectional image displayed in the first display mode of the display control device 10 according to the present embodiment. In this example, the upper sectional image T1, the front sectional image F1 and the right sectional image S1 obtained by cutting the object 100 on three different surfaces are displayed on the same plane so as to be viewed in a plan view. In the figure, the check box CB indicated as "3D" is unchecked, indicating that the cross-sectional image is displayed in the first display mode.

Further, in both the case of the second display mode shown in FIG. 3 and the case of the first display mode shown in FIG. 4, the upper parameter P1 for adjusting the position of the cut surface for capturing the upper cross-sectional image T1 and the front cross-sectional image F1 are set. The front parameter P2 for adjusting the position of the cut surface to be photographed and the right parameter P3 for adjusting the position of the cut surface for capturing the right cross-sectional image S1 are displayed. The user can change the cross-sectional image by moving the slide bars of the upper parameter P1, the front parameter P2, and the right parameter P3 by the input unit 10e such as a pointing device or a touch panel to change the position of the cut surface.

The second display control unit 13 is based on an input that moves the first surface (for example, the XY surface that intersects the Z axis at a predetermined position) in the first direction (for example, the Z axis direction) that intersects the first surface. The first cross-sectional image (for example, the upper cross-sectional image T1) may be changed so as to follow the movement of one surface. Here, the input for moving the first surface may be the input for moving the slide bar of the upper parameter P1. Further, the second display control unit 13 is based on an input for moving the second surface (for example, the YZ surface that intersects the X-axis at a predetermined position) in the second direction (for example, the X-axis direction) that intersects the second surface. , The second cross-sectional image (for example, the front cross-sectional image F1) is changed so as to follow the movement of the second surface. Here, the input for moving the second surface may be the input for moving the slide bar of the front parameter P2.

In the case of the examples shown in FIGS. 3 and 4, the upper parameter P1 is “76”, the front parameter P2 is “723”, and the right parameter P3 is “744”. By increasing or decreasing the values of these parameters, the user can move the position of the cut surface and change the cross-sectional image so as to follow the movement of the cut surface.

In this way, by changing the cross-sectional image according to the movement of the cut surface, the three-dimensional positional relationship of the plurality of cut surfaces can be easily grasped. The user changes the cross-sectional image by moving the position of the cut surface while three-dimensionally grasping the positional relationship of the cut surface in the second display mode, switches to the first display mode, and observes a plurality of cross-sectional images side by side. be able to.

Further, the first direction may be the normal direction of the first surface, and the second direction may be the normal direction of the second surface. In this example, the first direction is the normal direction of the XY plane that intersects the Z axis at a predetermined position, that is, the Z axis direction, and the second direction is the normal direction of the YZ plane that intersects the X axis at a predetermined position. That is, it is in the X-axis direction. By defining the first direction and the second direction in this way, the moving directions of the first and second surfaces can be easily grasped, and the first cross-sectional image and the second cross-sectional image can be changed to desired images. It will be easier.

FIG. 5 is an example of the first animation A1 and the second animation A2 displayed by the third display control unit 14 of the display control device 10 according to the present embodiment. In the figure, the upper cross-sectional image, the front cross-sectional image and the right cross-sectional image displayed in the first display mode M1 by the first display control unit 12 are shown at the left end, and the second display mode is shown by the second display control unit 13 at the right end. The upper sectional image, the front sectional image, and the right sectional image displayed by M2 are shown. Further, in the figure, the first animation A1 transitioning from the first display mode M1 to the second display mode M2 and the second animation A2 transitioning from the second display mode M2 to the first display mode M1 are shown.

The first animation A1 and the second animation A2 may be animations of about 0.6 seconds that smoothly transition between the first display mode M1 and the second display mode M2, respectively. The user can visually recognize the intermediate state between the two-dimensional first display mode M1 and the three-dimensional second display mode M2 by the first animation A1 and the second animation A2, and the first display mode M1 And the correspondence between the second display mode M2 and the second display mode M2 can be grasped more accurately. This makes it easier to grasp the three-dimensional positional relationship of the plurality of cut surfaces.

FIG. 6 is a second example of a cross-sectional image displayed in the second display mode of the display control device 10 according to the present embodiment. In this example, as compared with the first example shown in FIG. 3, the upper cross-sectional image T1 is the same, and the YZ plane intersecting the X-axis at a predetermined position is moved in the negative direction df of the X-axis to move the front cross-sectional image. F1 is changed to the front cross-sectional image F2, the XZ plane intersecting the Y-axis at a predetermined position is moved in the negative direction ds of the Y-axis, and the right cross-sectional image S1 is changed to the right cross-sectional image S2.

In the case of this example, the upper parameter P1 is "76", the front parameter P2 is "606", and the right parameter P3 is "626". Compared with the first example shown in FIG. 3, the front parameter P2 of this example is reduced by 117, and the position of the YZ plane on the X axis moves in the negative direction of the X axis accordingly. The front cross-sectional image F2 is displayed. Further, as compared with the first example shown in FIG. 3, the right parameter P3 of this example is reduced by 118, and the position of the XZ plane on the Y axis moves in the negative direction of the Y axis accordingly. The right cross-sectional image S2 at the position is displayed.

FIG. 7 is a second example of a cross-sectional image displayed in the first display mode of the display control device 10 according to the present embodiment. In this example, the same upper sectional image T1, front sectional image F2, and right sectional image S2 as in FIG. 6 are displayed so as to be viewed in a plan view. Also in this example, the upper parameter P1 is "76", the front parameter P2 is "606", and the right parameter P3 is "626".

The first display control unit 12 changes the switching unit after at least one of the first cross-sectional image (for example, the upper cross-sectional image T1) and the second cross-sectional image (for example, the front cross-sectional image F1) is changed by the second display control unit 13. When the display is switched by 15, the display unit 10f so as to view the changed first cross-sectional image (for example, upper cross-sectional image T1) and the changed second cross-sectional image (for example, front cross-sectional image F2) in a plan view. To display. The user can freely adjust the upper parameter P1, the front parameter P2, and the right parameter P3 in both the first display mode by the first display control unit 12 and the second display mode by the second display control unit 13. By changing the cross-sectional image and switching the check of the check box CB, it is possible to switch between the first display mode and the second display mode. In this way, when the cross-sectional image is changed by moving the cut surface, it is possible to switch to the first display mode in which a plurality of cross-sectional images are viewed in a plane, and the three-dimensional positional relationship of the plurality of cut surfaces can be grasped. While doing so, each cross-sectional image can be confirmed in detail.

FIG. 8 is a flowchart of the display control process executed by the display control device 10 according to the present embodiment. First, the display control device 10 receives an input for moving the XY plane, the YZ plane, and the XZ plane, or an input for switching between the first display mode and the second display mode (S10).

The display control device 10 determines whether the display mode designated after receiving the input is the second display mode (S11), and if it is the second display mode (S11: YES), immediately after switching the display mode. Is determined (S12). Here, immediately after switching the display mode means a period from receiving the switching of the display mode to before ending the display of the transition animation, for example, 0.6 seconds after receiving the switching of the display mode.

If not immediately after switching (S12: NO), the display control device 10 displays the upper cross-sectional image along the XY plane, displays the front cross-sectional image along the YZ plane, and displays the right cross-sectional image along the XY plane. (S13). The display control device 10 may display a cross-sectional image obtained by cutting the object 100 on an arbitrary surface, may display a cross-sectional image obtained by cutting the object 100 on a curved surface, or display four or more cross-sectional images. You may. Further, when the display control device 10 receives an input for moving the XY plane, the YZ plane, and the XZ plane, the upper cross-sectional image, the front cross-sectional image, and the right side so as to follow the movement of the XY plane, the YZ plane, and the XZ plane. Change the cross-sectional image.

On the other hand, when the display mode designated after receiving the input is not the second display mode (S11: NO), that is, when it is the first display mode, the display control device 10 determines whether or not the display mode has just been switched. (S14), if not immediately after switching (S14: NO), the upper cross-sectional image, the front cross-sectional image, and the right cross-sectional image are displayed on the same plane (S15). Further, when the display control device 10 receives an input for moving the XY plane, the YZ plane, and the XZ plane that designates the cut plane, the upper cross-sectional image, so as to follow the movement of the XY plane, the YZ plane, and the XZ plane. The front cross-sectional image and the right cross-sectional image are changed.

Immediately after switching the display mode (S12: YES, S14: YES), the display control device 10 displays the first animation or the second animation (S16). The display control device 10 displays the first animation when immediately after switching from the first display mode to the second display mode, and the second animation when immediately after switching from the second display mode to the first display mode. Is displayed.

After that, when the display is not terminated (S17: NO), the display control device 10 accepts an input for moving the XY plane, the YZ plane, and the XZ plane, or an input for switching between the first display mode and the second display mode (S10). The above process is repeatedly executed. Finally, when the display is terminated (S17: YES), the display control device 10 ends the display control process.

[Second Embodiment]
FIG. 9 is a first example of a cross-sectional image displayed in the second display mode of the display control device 10 according to the second embodiment. In this example, six cross-sectional images obtained by cutting the object 100 on six different surfaces are displayed along the cut surfaces. Specifically, the upper cross-sectional image T3a in which the object 100 is cut at the first XY plane that intersects the Z axis at the first position, and the lower part of the object 100 that is cut at the second XY plane that intersects the Z axis at the second position. The side sectional image T3b, the front sectional image F3a obtained by cutting the object 100 at the first YZ plane intersecting the X axis at the first position, and the object 100 cut at the second YZ plane intersecting the X axis at the second position. The rear sectional image F3b, the right sectional image S3a obtained by cutting the object 100 at the first XZ plane intersecting the Y axis at the first position, and the object 100 cut at the second XZ plane intersecting the Y axis at the second position. The left cross-sectional image S3b and the like are displayed.

The upper sectional image T3a, the front sectional image F3a, and the right sectional image S3a are displayed so as to be orthogonal to each other and intersect with each other. Further, although not visible in the figure, the lower sectional image T3b, the posterior sectional image F3b, and the left sectional image S3b are also displayed so as to be orthogonal to each other and intersect with each other. The upper sectional image T3a and the lower sectional image T3b are parallel, the front sectional image F3a and the rear sectional image F3b are parallel, and the right sectional image S3a and the left sectional image S3b are parallel. The user can arbitrarily adjust the observation direction (direction of the virtual camera) of a plurality of cross-sectional images and observe the cross-sectional image from various angles.

The second display control unit 13 has a third surface (for example, the Z axis and the second surface) separated from the first surface (for example, the first XY surface that intersects the Z axis at the first position) in the first direction (for example, the Z axis direction). A third cross-sectional image (for example, lower cross-sectional image T3b) obtained by cutting the object 100 at the second XY planes intersecting at the positions may be displayed on the display unit 10f along the third plane. By displaying the third cross-sectional image along the third surface, the object 100 can be observed from a wider variety of cuts.

In the present embodiment, the second display control unit 13 displays the cross-sectional image inside the area surrounded by the line of intersection of the plurality of cut surfaces so that one closed curved surface is formed by the plurality of cross-sectional images, and intersects. The cross-sectional image is not displayed or is displayed transparently outside the area surrounded by the line. On the other hand, the second display control unit 13 of the display control device 10 according to the first embodiment displays the cross-sectional image also outside the region surrounded by the intersection lines of the plurality of cut surfaces. The second display control unit 13 may display the cross-sectional image in any display format, but as the number of the cross-sectional images to be displayed increases, the visibility may be improved by the display format of the present embodiment.

In the example shown in FIG. 9, the check box CB indicated by "3D" is checked, indicating that the cross-sectional image is displayed in the second display mode. Further, in this example, the upper parameter P1a for adjusting the position of the cut surface for capturing the upper sectional image T3a, the lower parameter P1b for adjusting the position of the cut surface for capturing the lower sectional image T3b, and the front sectional image F3a. The front parameter P2a for adjusting the position of the cut surface to be photographed, the rear parameter P2b for adjusting the position of the cut surface for photographing the rear sectional image F3b, and the position of the cut surface for photographing the right sectional image S3a are adjusted. The right side parameter P3a and the left side parameter P3b for adjusting the position of the cut surface for capturing the left side cross-sectional image S3b are displayed. The user moves the slide bars of the upper parameter P1a, the lower parameter P1b, the front parameter P2a, the rear parameter P2b, the right parameter P3a and the left parameter P3b by the input unit 10e of the pointing device, the touch panel, etc. The cross-sectional image can be changed by changing.

FIG. 10 is a first example of a cross-sectional image displayed in the first display mode of the display control device 10 according to the present embodiment. In this example, the upper section image T3a, the lower section image T3b, the front section image F3a, the rear section image F3b, the right section image S3a, and the left section image S3b obtained by cutting the object 100 on six different planes are flat. It is displayed so that it can be seen. Further, the upper sectional image T3a, the front sectional image F3a and the right sectional image S3a are displayed on the same plane, and the lower sectional image T3b, the rear sectional image F3b and the left sectional image S3b are displayed on another plane parallel to the plane. Has been done. The user arbitrarily adjusts the observation direction (direction of the virtual camera) of a plurality of cross-sectional images to focus on observing the upper cross-sectional image T3a, the front cross-sectional image F3a, and the right cross-sectional image S3a, or the lower cross-sectional image T3b. , The rear cross-sectional image F3b and the left cross-sectional image S3b can be observed intensively.

Also in this embodiment, while switching between the first display mode and the second display mode, the upper parameter P1a, the lower parameter P1b, the front parameter P2a, the rear parameter P2b, the right parameter P3a, and the left parameter P3b are adjusted and disconnected. The surface can be moved to change the cross-sectional image. The change in the cut surface before and after the change is not shown. Further, also in the present embodiment, the first animation transitioning from the first display mode to the second display mode and the second animation transitioning from the second display mode to the first display mode are displayed.

FIG. 11 is a flowchart of a display control process executed by the display control device 10 according to the present embodiment. First, the display control device 10 accepts an input for moving the first XY plane, the second XY plane, the first YZ plane, the second YZ plane, the first XY plane, and the second XX plane, or an input for switching between the first display mode and the second display mode. (S20).

The display control device 10 determines whether the display mode specified after receiving the input is the second display mode (S21), and if it is the second display mode (S11: YES), immediately after switching the display mode. Is determined (S22). Here, immediately after switching the display mode means a period from receiving the switching of the display mode to before ending the display of the transition animation, for example, 0.6 seconds after receiving the switching of the display mode.

When not immediately after switching (S22: NO), the display control device 10 displays the upper cross-sectional image along the first XY plane, displays the lower cross-sectional image along the second XY plane, and displays the front cross-sectional image along the first YZ plane. The rear cross-sectional image is displayed along the second YZ plane, the right cross-sectional image is displayed along the first XZ plane, and the left cross-sectional image is displayed along the second XZ plane (S23). The display control device 10 may display a cross-sectional image obtained by cutting the object 100 on an arbitrary surface, may display a cross-sectional image obtained by cutting the object 100 on a curved surface, or display a cross-sectional image of 7 or more. You may. Further, when the display control device 10 receives an input for moving the first XY plane, the second XY plane, the first YY plane, the second YZ plane, the first XY plane, and the second XY plane, the display control device 10 receives the first XY plane, the second XY plane, and the first YZ. The upper sectional image, the lower sectional image, the front sectional image, the posterior sectional image, the right sectional image, and the left sectional image are changed so as to follow the movement of the surface, the second YZ surface, the first XZ surface, and the second XZ surface.

On the other hand, when the display mode designated after receiving the input is not the second display mode (S21: NO), that is, when it is the first display mode, the display control device 10 determines whether or not the display mode has just been switched. (S24), if not immediately after switching (S24: NO), the upper cross-sectional image, the front cross-sectional image and the right cross-sectional image are displayed on the same plane, and the lower cross-sectional image, the posterior cross-sectional image and the left cross-sectional image are the same as the other Display on a flat surface (S25). Further, when the display control device 10 receives an input for moving the first XY plane, the second XY plane, the first YZ plane, the second YZ plane, the first XY plane, and the second XY plane that specify the cut plane, the first XY plane and the second XY plane are the first. Upper section image, lower section image, front section image, posterior section image, right side section image and left side section so as to follow the movement of the 2XY surface, 1st YZ surface, 2nd YZ surface, 1st XZ surface and 2nd XZ surface. Change the image.

Immediately after switching the display mode (S22: YES, S24: YES), the display control device 10 displays the first animation or the second animation (S26). The display control device 10 displays the first animation when immediately after switching from the first display mode to the second display mode, and the second animation when immediately after switching from the second display mode to the first display mode. Is displayed.

After that, when the display is not terminated (S27: NO), the display control device 10 inputs or displays the first XY plane, the second XY plane, the first YZ plane, the second YZ plane, the first XX plane, and the second XX plane. The input for switching between the mode and the second display mode is accepted (S20), and the above processing is repeatedly executed. Finally, when the display is terminated (S27: YES), the display control device 10 ends the display control process.

The embodiments described above are for facilitating the understanding of the present invention, and are not for limiting and interpreting the present invention. Each element included in the embodiment and its arrangement, material, condition, shape, size, etc. are not limited to those exemplified, and can be changed as appropriate. In addition, the configurations shown in different embodiments can be partially replaced or combined.

Claims (9)

A first cross-sectional image obtained by cutting the object on the first surface and a second cross-sectional image obtained by cutting the object on the second surface intersecting the first surface are displayed on the display unit so as to be viewed in a plan view. The first display control unit and
A second display control unit that displays the first cross-sectional image on the display unit along the first surface and displays the second cross-sectional image on the display unit along the second surface.
A switching unit that switches between display by the first display control unit and display by the second display control unit based on the input, and
A display control device comprising. When the switching unit switches between the display by the first display control unit and the display by the second display control unit, the first display transitions from the display by the first display control unit to the display by the second display control unit. A third display control unit for displaying an animation or a second animation transitioning from a display by the second display control unit to a display by the first display control unit is further provided on the display unit.
The display control device according to claim 1. The second display control unit
Based on the input to move the first surface in the first direction intersecting the first surface, the first cross-sectional image is modified to follow the movement of the first surface.
Based on the input of moving the second surface in the second direction intersecting the second surface, the second cross-sectional image is changed so as to follow the movement of the second surface.
The display control device according to claim 1 or 2. The first display control unit is changed when at least one of the first cross-sectional image and the second cross-sectional image is changed by the second display control unit and then the display is switched by the switching unit. The display unit displays the later first cross-sectional image and the changed second cross-sectional image so as to be viewed in a plan view.
The display control device according to claim 3. The second display control unit causes the display unit to display a third cross-sectional image obtained by cutting the object on the third surface separated from the first surface in the first direction along the third surface.
The display control device according to claim 3 or 4. The first direction is the normal direction of the first surface, and the second direction is the normal direction of the second surface.
The display control device according to any one of claims 3 to 5. The first surface and the second surface are orthogonal to each other.
The display control device according to any one of claims 1 to 6. A first cross-sectional image obtained by cutting the object on the first surface and a second cross-sectional image obtained by cutting the object on the second surface intersecting the first surface are displayed on the display unit so as to be viewed in a plan view. The first step and
A second step of displaying the first cross-sectional image on the display unit along the first surface and displaying the second cross-sectional image on the display unit along the second surface.
Based on the input, the third step of switching between the display by the first step and the display by the second step, and
Display control method including. A computer equipped with a display control device
A first cross-sectional image obtained by cutting the object on the first surface and a second cross-sectional image obtained by cutting the object on the second surface intersecting the first surface are displayed on the display unit so as to be viewed in a plan view. 1st display control unit,
Based on the second display control unit that displays the first cross-sectional image on the display unit along the first surface and displays the second cross-sectional image on the display unit along the second surface, and based on the input. , A switching unit that switches between the display by the first display control unit and the display by the second display control unit.
A display control program that functions as.