Fingerprint Sensing and Enrollment
A sequence of biometric data images is received, such as, for example, a sequence of fingerprint images, and a set of biometric data images is selected from the sequence of images. The set of images can include one or more segments of at least one image in the sequence of images. One or more portions of at least one image of biometric data in the set of images can be selected to be included in the unified image of biometric data. The unified image of biometric data can be constructed using the one or more portions of the at least one image of biometric data. If the unified image of biometric data is not complete, a user can be prompted for one or more additional images of biometric data.
1 . A method for constructing a unified image of biometric data, the method comprising:
selecting one or more images of biometric data from a sequence of images of biometric data that is captured over a given period of time by a biometric recognition sensor;
selecting one or more segments in at least one selected image of biometric data to be included in the unified image of biometric data; and
including each selected segment in a portion of the unified image.
2 . The method as in claim 1 , further comprising:
identifying collected and uncollected portions of the unified image;
prompting a user for an additional image of biometric data;
receiving the additional image of biometric data; and
determining if one or more segments in the additional image of biometric data is to be included in an uncollected portion of the unified image.
3 . The method as in claim 2 , wherein prompting a user for an additional image of biometric data comprises:
displaying an image showing at least one of the collected portions and the uncollected portions of the unified image of biometric data; and
displaying one or more instructions directing the user on collecting the additional image of biometric data.
4 . The method as in claim 3 , further comprising updating the display of the at least one of the collected portions or uncollected portions of the unified image of biometric data when one or more segments of the additional image of biometric data is included in the unified image.
5 . The method as in claim 3 , wherein at least one instruction comprises a readable instruction.
6 . The method as in claim 3 , wherein at least one instruction comprises a pictorial instruction.
7 . The method as in claim 1 , further comprising processing at least one image in the sequence of images of biometric data to reduce noise or unwanted artifacts.
8 . The method as in claim 1 , further comprising processing at least one selected segment to reduce noise or unwanted artifacts.
9 . The method as in claim 1 , further comprising receiving the sequence of images of biometric data.
10 . The method as in claim 1 , further comprising determining a location in the unified image of biometric data for the selected one or more segments prior to including the selected one or more segments in the unified image of biometric data.
11 . The method as in claim 1 , further comprising determining if at least one segment is of sufficient resolution prior to selecting the one or more segments in at least one image of biometric data to be included in the unified image of biometric data.
12 . The method as in claim 1 , further comprising enrolling the unified image when the unified image is complete.
13 . The method as in claim 1 , wherein the biometric recognition sensor comprises a fingerprint sensor and the sequence of images of biometric data comprises a sequence of images of fingerprint data that is captured when a finger of a user is near or contacting the fingerprint sensor.
14 . An electronic device, comprising:
a biometric recognition sensor adapted to capture a sequence of images of biometric data over a given period of time; and
a processor operatively connected to the biometric recognition sensor and adapted to select one or more segments in at least one image in the sequence of images of biometric data and construct a unified biometric image using the selected one or more segments.
15 . The electronic device as in claim 14 , further comprising a display operatively connected to the processor for displaying to a user a prompt for collecting one or more additional images of biometric data.
16 . The electronic device as in claim 15 , wherein the processor is further adapted to identify collected and uncollected portions of the unified image of biometric data.
17 . The electronic device as in claim 16 , wherein the prompt displayed to the user comprises:
an image identifying at least one of the collected portions and the uncollected portions of the unified image of biometric data; and
one or more instructions directing the user on collecting the one or more additional images of biometric data.
18 . The electronic device as in claim 17 , wherein at least one instruction comprises a readable instruction.
19 . The electronic device as in claim 17 , wherein at least one instruction comprises a pictorial instruction.
20 . The electronic device as in claim 14 , wherein the biometric recognition sensor adapted to capture a sequence of images of biometric data comprises a fingerprint sensor adapted to capture a sequence of images of fingerprint data when a finger of a user is near or contacting the fingerprint sensor.