IMAGE PROCESSING SYSTEM AND METHOD

• US 20140022242A1
• Filed: 03/30/2012
• Published: 01/23/2014
• Est. Priority Date: 04/08/2011
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Wenzel, Fabian, Truyen, Roel, Den Harder, Johan Michiel, Alexander Maria Ermes, Jean-Pierre Franciscus
• Granted Patent: US 10,373,375 B2
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G06F 1/1694 the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer
• CPC Class Codes: G06F 2200/1637 Sensing arrangement for detection of housing movement or orientation, e.g. for controlling scrolling or cursor movement on the display of an handheld computer
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 3/04815 Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
• CPC Class Codes: G06T 15/20 Perspective computation
• CPC Class Codes: G06T 19/003 Navigation within 3D models or images
• CPC Class Codes: H04N 13/349 Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for viewing without the aid of special glasses using fly-eye lenses H04N13/307
• CPC Class Codes: H04N 13/388 Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

Image processing system 100 for enabling a user to navigate through image data having at least three spatial dimensions by displaying views 155 of the image data, the image processing system comprising an image device 110 comprising a display 130 for displaying the views of the image data and an orientation sensor 120 for measuring an orientation of the image device with respect to a reference orientation for providing rotation data 125 indicative of a device rotation of the image device, means 140 for

N establishing a center of rotation in the image data, and an image processor 150 for establishing the views of the image data in relation to the device rotation by, for establishing a current view, (i) receiving the rotation data from the orientation sensor, (ii) establishing a view rotation in relation to the device rotation, and (iii) establishing the current view in dependence on the view rotation around the center of rotation with respect to a reference view.

Claims

1. Image processing system for enabling a user to navigate through image data having at least three spatial dimensions by displaying views of the image data, the image processing system comprising:

an image device comprising a display for displaying the views of the image data and an orientation sensor for measuring an orientation of the image device with respect to a reference orientation for providing rotation data indicative of a device rotation of the image device;

means for establishing a center of rotation in the image data; and

an image processor for establishing the views of the image data in relation to the device rotation by, for establishing a current view, (i) receiving the rotation data from the orientation sensor, (ii) establishing a view rotation in relation to the device rotation, and (iii) establishing the current view in dependence on the view rotation around the center of rotation with respect to a reference view;

wherein the means for establishing the center of rotation comprises a region of interest detector for detecting a region of interest in the image data, and is arranged for establishing the center of rotation in dependence on the region of interest.

3. Image processing system according to claim 1, wherein the image processing system further comprises a user input for receiving selection data from the user, and the means for establishing the center of rotation is arranged for establishing the center of rotation in further dependence on the selection data so as to enable the user to influence a manner in which the center of rotation is established.

4. Image processing system according to claim 3, wherein the user input is arranged for receiving navigation data from the user, and the image processor is arranged for establishing the views of the image data in dependence on the navigation data.

5. Image processing system according to claim 4, wherein the navigation data comprises a pan and/or a zoom navigation command.

6. Image processing system according to claim 1, wherein the image data comprises volumetric image data and the image processor is arranged for said establishing the current view by using at least one of the group of:

multi-planar reformatting, volume rendering, and surface rendering, to generate the current view.

7. Image processing system according to claim 1, wherein the image data comprises three-dimensional graphics data and the image processor is arranged for said establishing the current view by using graphics rendering to generate the current view.

8. Image processing system according to claim 1, wherein said establishing the current view comprises (i) establishing a 4×

4 transformation matrix in dependence on the view rotation and the center of rotation, and (ii) generating the current view using the 4×

4 transformation matrix.

9. Image processing system according to claim 1, wherein the image processor is arranged for establishing the view rotation in relation to the device rotation by applying at least one of the group of:

a direct mapping, a gain, an offset, a threshold and a non-linear function, to the device rotation to obtain the view rotation.

10. Image processing system according to claim 1, wherein the image processing system is arranged for receiving a reset command from the user for resetting the reference orientation and/or the reference view.

11. Image processing system according to claim 1, wherein the image processing system is arranged for receiving a pause command from the user for pausing said establishing the views of the image data in relation to the device rotation.

12. Handheld device comprising the image processing system of claim 1.

13. Workstation or imaging apparatus comprising the image processing system of claim 1.

16. Image processing system according to claim 1, wherein the means for establishing the center of rotation is arranged for establishing the region of interest as the center of rotation.

2. (canceled)

14. A method of enabling a user to navigate through image data having at least three spatial dimensions by displaying views of the image data on a display of an image device, the method comprising:

measuring an orientation of the image device with respect to a reference orientation for providing rotation data indicative of a device rotation of the image device;

establishing a center of rotation in the image data; and

establishing the views of the image data in relation to the device rotation by, for establishing a current view, (i) receiving the rotation data from the orientation sensor, (ii) establishing a view rotation in relation to the device rotation, and (iii) establishing the current view in dependence on the view rotation around the center of rotation with respect to a reference view, wherein the step of establishing the center of rotation in the image data comprises;

detecting a region of interest in the image data and

establishing the center of rotation in dependence on the region of interest.

15. A computer program product comprising instructions for causing a processor system to perform the method according to claim 14.