System and method for acquisition of three-dimensional information of body parts
The embodiments herein provide a method and a device for the acquisition of three-dimensional information of body parts. The method includes a step of processing an image of an object being exposed to a lighting condition or a sequence of lighting conditions adapted to extract at least two types of information selectable from a group. The group includes a silhouette of the object, a color of the object, a surface orientation of the object, and multi-spectral information of the object.
1. A method, comprising:
processing an image of an object being exposed to a lighting condition or a sequence of lighting conditions adapted to extract at least two types of information selectable from a group comprising:
a silhouette of the object,
a color of the object,
a surface orientation of the object, and
multi-spectral information of the object; and
forming a three-dimensional model of the object based upon an image's feature cues and information extracted by the lighting condition or the sequence of lighting conditions,
wherein the surface orientation of the object corresponds to a direction that is substantially perpendicular to a plane representing a given point on the object's surface, and
wherein the three-dimensional model of the object is formed from a mesh registration, the mesh registration being based on a camera configuration and the image's feature cues.
2. The method as claimed in claim 1 , wherein the lighting condition or the sequence of lighting conditions is adapted to extract at least three types of information selectable from the group.
3. The method as claimed in claim 1 , wherein the lighting condition or the sequence of lighting conditions is adapted to extract at least the surface orientation of the object.
4. The method as claimed in claim 1 , wherein the lighting condition or the sequence of lighting conditions is emitted from a light source facing the object from multiple directions at a substantially uniform distance.
5. The method as claimed in claim 1 , wherein the object is a body part.
6. The method as claimed in claim 1 , wherein the mesh registration is based on a secondary registration point; the secondary registration point being based on the camera configuration, and a primary registration point; and the camera configuration and the primary registration point are based on the image's feature cues.
7. The method as claimed in claim 1 , wherein the information extracted by the lighting condition or the sequence of lighting conditions is applied to the mesh registration to form the three-dimensional model of the object.
8. The method as claimed in claim 1 , wherein a plurality of the images are processed and the object is exposed to a plurality of the lighting conditions or a plurality of the sequences of lighting conditions.
9. A device, comprising:
an image-capturing unit adapted to capture an image of an object substantially synchronously from a plurality of angles;
a processor adapted to process the image; and
a lighting unit adapted to expose the object to a lighting condition or a sequence of lighting conditions adapted to extract at least two types of information selectable from a group comprising: a silhouette of the object; a color of the object; a surface orientation of the object; and multi-spectral information of the object,
wherein the processor is also adapted to process the image to form a three-dimensional model of the object based upon image's feature cues and information extracted by the lighting condition or the sequence of lighting conditions, and
wherein the three-dimensional model of the object is formed from a mesh registration, said mesh registration being based on a camera configuration and the image's feature cues.
10. The device as claimed in claim 9 , wherein the lighting unit is a light-emitting pane further adapted to face the object from the multiple directions at a substantially uniform distance, said light-emitting pane being a dome having its internal surface adapted to expose the object to the lighting condition or the sequence of lighting conditions.
11. The device as claimed in claim 10 , wherein the dome is a polyhedral dome.
12. The device as claimed in claim 10 , wherein the image-capturing unit is attached to the lighting unit.
13. The device as claimed in claim 9 , wherein the image-capturing unit is attached to the lighting unit.
14. The device as claimed in claim 9 , wherein the lighting condition or the sequence of lighting conditions is adapted to extract at least three types of information selectable from said group.
15. The device as claimed in claim 9 , wherein the lighting condition or the sequence of lighting conditions is adapted to extract at least the surface orientation of the object.
16. The device as claimed in claim 9 , wherein the mesh registration is based on a secondary registration point; the secondary registration point is based on the camera configuration, and a primary registration point; and the camera configuration and the primary registration point are based on the image's feature cues.
17. The device as claimed in claim 9 , wherein the information extracted by the lighting condition or the sequence of lighting conditions is applied to the mesh registration to form the three-dimensional model of the object.
18. The device as claimed in 9 , wherein a plurality of the images are processed and the object is exposed to a plurality of the lighting conditions or a plurality of the sequences of lighting conditions.
19. The device as claimed in claim 9 , wherein the object is a body part.