System and method for using three dimensional infrared imaging to identify individuals
First Claim
1. A computer implemented method for identifying a person, comprising:
- generating by a computer a body map of one or more body segments of the person;
comparing by the computer the body map of said one or more body segments to body maps of corresponding segments of known persons; and
applying by the computer a threshold test to determine whether one or more body maps of corresponding segments of known persons is a match, wherein each body map is generated by;
collecting simultaneous images of the body segment using a plurality of imaging devices;
combining corrected and overlaid images of the infrared imager and the range imager to produce a 3D infrared model;
processing the range image to extract a curvilinear feature map of external anatomy;
processing the infrared image to extract a curvilinear feature map of internal anatomy;
skeletonizing the respective curvilinear feature maps;
producing skeleton node maps containing intersection and branch locations of said curvilinear features;
labeling each node according to a standard directory description of intersecting or branching anatomical features;
forming a layered composite image of the infrared, range, and visual images, plus their feature maps, plus their skeletonized feature maps, plus their node maps;
selecting nodes corresponding to three reference points designated for said body segment;
rotating the composite image in three-dimensional space such that the three reference points define a two dimensional (2D) image plane, said 2D image plane being a standard pose for said body segment;
storing said rotated standardized composite image as a body map.
0 Assignments
0 Petitions
Accused Products
Abstract
Calibrated infrared and range imaging sensors are used to produce a true-metric three-dimensional (3D) surface model of any body region within the fields of view of both sensors. Curvilinear surface features in both modalities are caused by internal and external anatomical elements. They are extracted to form 3D Feature Maps that are projected onto the skin surface. Skeletonized Feature Maps define subpixel intersections that serve as anatomical landmarks to aggregate multiple images for models of larger regions of the body, and to transform images into precise standard poses. Features are classified by origin, location, and characteristics to produce annotations that are recorded with the images and feature maps in reference image libraries. The system provides an enabling technology for searchable medical image libraries.
-
Citations
5 Claims
-
1. A computer implemented method for identifying a person, comprising:
-
generating by a computer a body map of one or more body segments of the person; comparing by the computer the body map of said one or more body segments to body maps of corresponding segments of known persons; and applying by the computer a threshold test to determine whether one or more body maps of corresponding segments of known persons is a match, wherein each body map is generated by; collecting simultaneous images of the body segment using a plurality of imaging devices; combining corrected and overlaid images of the infrared imager and the range imager to produce a 3D infrared model; processing the range image to extract a curvilinear feature map of external anatomy; processing the infrared image to extract a curvilinear feature map of internal anatomy; skeletonizing the respective curvilinear feature maps; producing skeleton node maps containing intersection and branch locations of said curvilinear features; labeling each node according to a standard directory description of intersecting or branching anatomical features; forming a layered composite image of the infrared, range, and visual images, plus their feature maps, plus their skeletonized feature maps, plus their node maps; selecting nodes corresponding to three reference points designated for said body segment; rotating the composite image in three-dimensional space such that the three reference points define a two dimensional (2D) image plane, said 2D image plane being a standard pose for said body segment; storing said rotated standardized composite image as a body map. - View Dependent Claims (2, 3, 4, 5)
-
Specification