APPARATUS AND METHOD FOR PROCESSING MANIPULATION OF 3D VIRTUAL OBJECT

• US 20140015831A1
• Filed: 07/15/2013
• Published: 01/16/2014
• Est. Priority Date: 07/16/2012
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Jin-Woo, HAN, Tae-Man, JEON, Boo-Sun, EUN, Jee-Sook
• Application Number:
  US13/942,078
• Publication Number:
  US 20140015831A1
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G06F 2203/04802 3D-info-object: information is displayed on the internal or external surface of a three dimensional manipulable object, e.g. on the faces of a cube that can be rotated by the user
• CPC Class Codes: G06F 3/0346 with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
• 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

Abstract

Disclosed herein are an apparatus and method for processing the manipulation of a three-dimensional (3D) virtual object. The apparatus includes an image input unit, an environment reconstruction unit, a 3D object modeling unit, a space matching unit, and a manipulation processing unit. The image input unit receives image information generated by capturing a surrounding environment including a manipulating object. The environment reconstruction unit reconstructs a 3D virtual reality space. The 3D object modeling unit models a 3D virtual object that is manipulated by the manipulating object, and generates a 3D rendering space. The space matching unit matches the 3D rendering space to the 3D virtual reality space. The manipulation processing unit determines whether the manipulating object is in contact with the surface of the 3D virtual object, and tracks the path of a contact point and processes the motion of the 3D virtual object.

Claims

1. An apparatus for processing manipulation of a three-dimensional (3D) virtual object, comprising:

an image input unit configured to receive image information generated by capturing a surrounding environment including a manipulating object using a camera;

an environment reconstruction unit configured to reconstruct a 3D virtual reality space for the surrounding environment using the image information;

a 3D object modeling unit configured to model a 3D virtual object that is manipulated by the manipulating object, and to generate a 3D rendering space including the 3D virtual object;

a space matching unit configured to match the 3D rendering space to the 3D virtual reality space; and

a manipulation processing unit configured to determine whether the manipulating object is in contact with a surface of the 3D virtual object, to track a path of a contact point between the surface of the 3D virtual object and the manipulating object, and to process a motion of the 3D virtual object.

2. The apparatus of claim 1, wherein the manipulation processing unit includes a contact determination unit configured to determine that the manipulating object is in contact with the surface of the 3D virtual object if a point on the surface of the manipulating object conforms to a point on the surface of the 3D virtual object in the 3D virtual reality space.

3. The apparatus of claim 2, wherein the manipulation processing unit further includes a contact point tracking unit configured to calculate a normal vector directed from the contact point with the surface of the 3D virtual object to a center of gravity of the 3D virtual object and to track the path of the contact point, from a time at which the contact determination unit determines that the manipulating object is in contact with the surface of the 3D virtual object.

4. The apparatus of claim 3, wherein the contact point tracking unit, if the contact point includes two or more contact points, calculates normal vectors with respect to the two or more contact points, and tracks paths of the two or more contact points.

5. The apparatus of claim 4, wherein:

the manipulation processing unit further includes a motion state determination unit configured to determine a motion state of the 3D virtual object by comparing the normal vectors with direction vectors with respect to the paths of the contact points; and

the motion state of the 3D virtual object is any one of a translation motion, a rotation motion or a composite motion in which a translation motion and a rotation motion are performed simultaneously.

6. The apparatus of claim 5, wherein the manipulation processing unit further includes a motion processing unit configured to process the motion of the 3D virtual object based on the motion state of the 3D virtual object that is determined by the motion state determination unit.

7. The apparatus of claim 1, further comprising an image correction unit configured to correct the image information so that a field of view of the camera conforms to a field of view of a user who is using the manipulating object, and to acquire information about a relative location relationship between a location of the user'"'"'s eye and the manipulating object.

8. The apparatus of claim 1, further comprising a manipulation state output unit configured to output results of the motion of the 3D virtual object attributable to a motion of the manipulating object to a user.

9. The apparatus of claim 8, wherein the manipulation state output unit, if the contact point includes two or more contact points and a distance between the two or more contact points decreases, outputs information about a deformed appearance of the 3D virtual object to the user based on the distance between the two or more contact points.

10. A method of processing manipulation of a 3D virtual object, comprising:

receiving image information generated by capturing a surrounding environment including a manipulating object using a camera;

reconstructing a 3D virtual reality space for the surrounding environment using the image information;

modeling a 3D virtual object that is manipulated by the manipulating object, and generating a 3D rendering space including the 3D virtual object;

matching the 3D rendering space to the 3D virtual reality space; and

determining whether the manipulating object is in contact with a surface of the 3D virtual object, tracking a path of a contact point between the surface of the 3D virtual object and the manipulating object, and processing a motion of the 3D virtual object.

11. The method of claim 10, wherein processing the motion of the 3D virtual object includes determining that the manipulating object is in contact with the surface of the 3D virtual object if a point on the surface of the manipulating object conforms to a point on the surface of the 3D virtual object in the 3D virtual reality space.

12. The method of claim 11, wherein processing the motion of the 3D virtual object further includes calculating a normal vector directed from the contact point with the surface of the 3D virtual object to a center of gravity of the 3D virtual object and tracking the path of the contact point, from a time at which the contact determination unit determines that the manipulating object is in contact with the surface of the 3D virtual object.

13. The method of claim 12, wherein processing the motion of the 3D virtual object further includes determining whether the contact point includes two or more contact points, and, if the contact point includes two or more contact points, calculating normal vectors with respect to the two or more contact points and tracking paths of the two or more contact points.

14. The method of claim 13, wherein:

processing the motion of the 3D virtual object further includes determining a motion state of the 3D virtual object by comparing the normal vectors with direction vectors with respect to the paths of the contact points; and

the motion state of the 3D virtual object is any one of a translation motion, a rotation motion or a composite motion in which a translation motion and a rotation motion are performed simultaneously.

15. The method of claim 14, wherein processing the motion of the 3D virtual object further includes processing the motion of the 3D virtual object based on the motion state of the 3D virtual object that is determined by the motion state determination unit.

16. The method of claim 10, further comprising correcting the image information so that a field of view of the camera conforms to a field of view of a user who is using the manipulating object, and acquiring information about a relative location relationship between a location of the user'"'"'s eye and the manipulating object.

17. The method of claim 10, further comprising outputting results of the motion of the 3D virtual object attributable to a motion of the manipulating object to a user.

18. The method of claim 17, wherein outputting the results of the motion of the 3D virtual object to the user is, if the contact point includes two or more contact points and a distance between the two or more contact points decreases, outputting information about a deformed appearance of the 3D virtual object to the user based on the distance between the two or more contact points.