Patent ID: 9064139
Filing Date: 2015-06-23
Classification: G06K

Abstract:
1. A system configured to generate a composite image of a friction ridge signature of a subject, the system comprising: a platen comprising a first light-reflecting surface; a light source configured to emit light rays to illuminate a finger of the subject placed in contact with the first light-reflecting surface of the platen; a camera configured to capture images of the finger of the subject in contact with the first light-reflecting surface of the platen, through the platen, in an ongoing manner; and a processor configured to receive images of the finger of the subject captured by the camera and determine whether the finger of the subject is being rolled across the first light-reflecting surface based on the received images, the processor configured to determine image parameters for individual ones of the received images, the image parameters including a location parameter that indicates a location of the finger of the subject on the first light-reflecting surface of the platen, wherein the processor is configured such that the received images include a first image of the finger in a first location, and a second image of the finger in a second location, the first image being captured by the camera before the second image, wherein the processor is configured to determine a first location parameter for the first image and a second location parameter for the second image, and wherein the processor is configured to determine whether the finger is being rolled across the first light-reflecting surface based on a comparison of the first location parameter and the second location parameter.