Navigating among images of an object in 3D space
A three-dimensional model of an object is employed to aid in navigation among a number of images of the object taken from various viewpoints. In general, an image of an object such as a digital photograph is displayed in a user interface or the like. When a user selects a point within the display that corresponds to a location on the surface of the object, another image may be identified that provides a better view of the object. In order to maintain user orientation to the subject matter while navigating to this destination viewpoint, the display may switch to a model view and a fly-over to the destination viewpoint may be animated using the model. When the destination viewpoint is reached, the display may return to an image view for further inspection, marking, or other manipulation by the user.
1. A method of navigating among a number of images taken of an object, the method comprising:
(a) displaying a first image of an object, the first image selected from a number of images taken of the object, the first image showing a surface of the object from a first viewpoint;
(b) receiving a selection of a location on the surface of the object;
(c) selecting a second image of the object from the number of images taken of the object, the second image selected to provide a different view of the location on the surface of the object from a second viewpoint;
(d) rendering an animation of a spatial transition from the first viewpoint to the second viewpoint using a three-dimensional model of the object;
(e) displaying the animation;
(f) displaying the second image upon reaching the second viewpoint in the animation; and
(g) in response to receiving a user interrupt of the animation during display of the animation, automatically exiting the animation at a point of the user interrupt and displaying a nearest image from the number of images at the point of the user interrupt.
2. The method of claim 1 wherein receiving the selection of the location includes receiving the selection from within a graphical user interface.
3. The method of claim 2 wherein receiving the selection includes at least one of a mouse input and a touch screen input.
4. The method of claim 1 wherein the three-dimensional model includes a texture map that is derived from at least one image of the number of images.
5. The method of claim 1 wherein selecting the second image includes displaying a plurality of candidate images selected from the number of images taken of the object and receiving a user selection of one of the plurality of candidate images.
6. The method of claim 1 wherein the number of images includes a plurality of frames of video data that originate from a center channel of a video camera having one or more side channels that capture data used to generate the three-dimensional model.
7. The method of claim 1 wherein selecting the second image includes selecting a one of the number of images having a viewpoint that is most substantially normal to the surface at the location.
8. The method of claim 1 wherein selecting the second image includes selecting a one of the number of images having the location nearest to the center thereof.
9. The method of claim 1 wherein the object includes human dentition.
10. The method of claim 9 wherein the object includes at least one of teeth, gums, dentures, and braces.
11. The method of claim 9 wherein the object includes a prepared tooth surface.