IMAGE PROCESSING SYSTEM, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

• US 20120313933A1
• Filed: 06/13/2012
• Published: 12/13/2012
• Est. Priority Date: 06/13/2011
• Status: Active Grant

• Current Assignee: Toshiba Medical Systems Corporation (Canon Inc.)
• Original Assignee: Toshiba Medical Systems Corporation (Canon Inc.), Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: TSUKAGOSHI, Shinsuke, Nakayama, Michito, Inokawa, Hiroyasu
• Granted Patent: US 9,578,303 B2
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics
• CPC Class Codes: G06T 2219/004 Annotating, labelling
• CPC Class Codes: G06T 2219/2016 Rotation, translation, scaling
• CPC Class Codes: H04N 13/183 On-screen display [OSD] information, e.g. subtitles or menus

Abstract

According to one embodiment, an image processing system includes an acquisition unit, a determination unit, and an output unit. The acquisition unit acquires a rendering condition used for generating a parallax image group from volume data. The determination unit sets corresponding information for causing a space coordinate of a stereoscopic image viewed stereoscopically by referring to a stereoscopic display device that displays the parallax image group to correspond to a space coordinate of a captured site in the volume data based on the rendering condition and a display size and determines a scale for converting a length in a space of the stereoscopic image into a length in a space of the captured site based on the corresponding information. The output unit performs output control such that the scale is displayed.

Claims

1. An image processing system comprising:

an acquisition unit configured to acquire a rendering condition used for generating a parallax image group that is a predetermined parallax number of parallax images from volume data that is three-dimensional medical image data;

a determination unit configured to set corresponding information for causing a space coordinate of a stereoscopic image viewed stereoscopically by referring to a stereoscopic display device that displays the parallax image group to correspond to a space coordinate of a captured site in the volume data based on at least a parallactic angle between parallax images constituting the parallax image group included in the rendering condition and a display size of the parallax image group displayed on the stereoscopic display device, and to determine a scale for converting a length in a perpendicular direction with respect to a display surface of the stereoscopic display device in a space of the stereoscopic image into a length in a space of the captured site based on the corresponding information; and

an output unit configured to perform output control such that the scale is displayed on the stereoscopic display device in a manner superimposed on the stereoscopic image based on the parallax image group.

2. The image processing system according to claim 1, wherein the determination unit is configured to set the corresponding information based on a function that converts the space coordinate of the stereoscopic image into the space coordinate of the volume data and that uses the parallactic angle, the display size, and a direction of a line of sight as parameters, and to determine a scale for converting a length in the space of the stereoscopic image on the display surface of the stereoscopic display device into a length in the space of the captured site as the scale based on the corresponding information in addition to the scale for converting the length in the perpendicular direction with respect to the display surface of the stereoscopic display device in the space of the stereoscopic image into the length in the space of the captured site.

3. The image processing system according to claim 1, wherein the determination unit is configured to determine a scale in which reduction scales in a protruding direction and a depth direction with respect to the display surface are different from each other in accordance with the corresponding information.

4. The image processing system according to claim 1, wherein the output unit is configured to perform control such that a direction of a line segment constituting the scale is changed depending on a position at which the scale is displayed in a manner superimposed on the stereoscopic image.

5. The image processing system according to claim 1, wherein the determination unit is configured to determine a grid line that divides the space of the stereoscopic image in a grid as the scale in accordance with the corresponding information.

6. The image processing system according to claim 1, wherein the output unit is configured to control whether to display the scale determined by the determination unit in a superimposed manner depending on a request from an observer of the stereoscopic display device.

7. The image processing system according to claim 1, wherein the determination unit is configured to convert information of an axis used for the scale in accordance with the corresponding information from a coordinate axis of a stereoscopic image space into a coordinate axis of a volume data space.

8. An image processing apparatus comprising:

an acquisition unit configured to acquire a rendering condition used for generating a parallax image group that is a predetermined parallax number of parallax images from volume data that is three-dimensional medical image data;

a determination unit configured to set corresponding information for causing a space coordinate of a stereoscopic image viewed stereoscopically by referring to a stereoscopic display device that displays the parallax image group to correspond to a space coordinate of a captured site in the volume data based on at least a parallactic angle between parallax images constituting the parallax image group included in the rendering condition and a display size of the parallax image group displayed on the stereoscopic display device, and to determine a scale for converting a length in a perpendicular direction with respect to a display surface of the stereoscopic display device in a space of the stereoscopic image into a length in a space of the captured site based on the corresponding information; and

an output unit configured to perform output control such that the scale is displayed on the stereoscopic display device in a manner superimposed on the stereoscopic image based on the parallax image group.

9. An image processing method comprising:

acquiring, by an acquisition unit, a rendering condition used for generating a parallax image group that is a predetermined parallax number of parallax images from volume data that is three-dimensional medical image data;

setting, by a determination unit, corresponding information for causing a space coordinate of a stereoscopic image viewed stereoscopically by referring to a stereoscopic display device that displays the parallax image group to correspond to a space coordinate of a captured site in the volume data based on at least a parallactic angle between parallax images constituting the parallax image group included in the rendering condition and a display size of the parallax image group displayed on the stereoscopic display device, and determining a scale for converting a length in a perpendicular direction with respect to a display surface of the stereoscopic display device in a space of the stereoscopic image into a length in a space of the captured site based on the corresponding information; and

performing, by an output unit, output control such that the scale is displayed on the stereoscopic display device in a manner superimposed on the stereoscopic image based on the parallax image group.