System and method for 3D imaging using structured light illumination
OwnerLaurence G. Hassebrook, Daniel L. Lau +1inventors
InventorsLaurence G. Hassebrook, Daniel L. Lau, Henry G. Dietz
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Abstract
A biometrics system captures and processes a handprint image using a structured light illumination to create a 2D representation equivalent of a rolled inked handprint. A processing unit calculates 3D coordinates of the hand from the plurality of images and maps the 3D coordinates to a 2D flat surface to create a 2D representation equivalent of a rolled inked handprint.
Claims20
A biometrics system using a structured light illumination technique, comprising:
- an enclosure having a scan volume formed therein, wherein one side of the scan volume includes a background pattern;
- at least one projection unit for projecting a structured light pattern onto the 3D object positioned in the scan volume;
- one or more cameras for capturing a plurality of images of the 3D object, wherein the plurality of images include at least a portion of the 3D object and a portion of the backdrop pattern;
- and
- a processing unit for calculating coordinates of the 3D object from one or more of the plurality of images.
A biometrics system for capturing and processing a biometric image using a structured light illumination, comprising:
- a reference plane with a backdrop pattern, wherein coordinates of the backdrop pattern are predetermined;
- at least one projection unit for projecting a structured light pattern onto a hand positioned on or in front of the backdrop pattern;
- at least one camera for capturing a plurality of images of the hand, wherein each of the plurality of images includes at least a portion of the hand and the backdrop pattern;
- and
- a processing unit for calculating three dimensional coordinates of the hand from the plurality of images using the predetermined coordinates of the backdrop pattern to align the plurality of images.
A biometrics system using a structured light illumination technique, comprising:
- an enclosure having a scan volume formed therein, wherein the enclosure includes positioning aids to assist in correct positioning of a 3D object within the scan volume;
- at least one projection unit for projecting a structured light pattern onto the 3D object positioned in the scan volume;
- one or more cameras for capturing a plurality of images of the 3D object, wherein the plurality of images include at least a portion of the 3D object;
- and
- a processing unit for calculating coordinates of the 3D object from one or more of the plurality of images.
Dependencies are inferred from the claim text.