System and method for 3D imaging using structured light illumination
AssigneeUniversity of Kentucky Research Foundation
InventorsLaurence G. Hassebrook, Daniel L. Lau, Henry G. Dietz
Life of this patent
Estimating the term…
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 method for a processing device to determine a two dimensional (2D) handprint image from a three dimensional (3D) data of the handprint, comprising:
- processing one or more handprint images captured with a structured light illumination technique to determine 3D coordinates in the one or more handprint images;
- extracting by the processing device handprint surface information using the 3D coordinates, wherein the handprint surface information includes ridge height information;
- generating a 2D handprint image from a set of the 3D coordinates;
- mapping by the processing device the handprint surface information onto the 2D handprint image;
- and
- translating the ridge height information to a grey-scale image index.
A processing device for generating a two dimensional (2D) print image from three-dimensional (3D) data, comprising:
- at least one processor operable to:
- determine 3D coordinates of a print;
- generate 3D coordinates of a smooth print surface that approximates a shape of the print;
- extract print surface information by comparing a set of the 3D coordinates of the smooth print surface with the 3D coordinates of the print, wherein the print surface information includes ridge height information;
- generate a 2D print image from the set of the 3D coordinates of the smooth print surface;
- map the print surface information onto the 2D print image;
- and
- translate the ridge height information to a grey-scale in the 2D print image.
A method for a processing device to generate a two dimensional (2D) print image from three-dimensional (3D) data, comprising:
- determining 3D coordinates of a print;
- generating 3D coordinates of a smooth print surface that approximates a shape of the print;
- extracting print surface information by comparing a set of the 3D coordinates of the smooth print surface with the 3D coordinates of the print, wherein the print surface information includes ridge height information;
- generating a 2D print image from the set of the 3D coordinates of the smooth print surface;
- mapping the print surface information onto the 2D print image;
- and
- translating the ridge height information to a grey-scale in the 3D print image.
A processing device operable to determine a two dimensional (2D) handprint image from a three dimensional (3D) data of the handprint, comprising:
- at least one processor operable to:
- process one or more handprint images captured with a structured light illumination technique to determine 3D coordinates in the one or more handprint images;
- extract ridge height information using the 3D coordinates;
- generate a 2D handprint image from a set of the 3D coordinates, wherein the 2D handprint image includes a mapping of the ridge height information onto the 2D handprint image using a grey-scale index.
Dependencies are inferred from the claim text.