MULTI-SPECTRAL ULTRASONIC IMAGING

摘要

Systems and methods for multi-spectral ultrasonic imaging are disclosed. In one embodiment, a finger is scanned at a plurality of ultrasonic scan frequencies. Each scan frequency provides an image information set describing a plurality of pixels of the finger including a signal-strength indicating an amount of energy reflected from a surface of a platen on which a finger is provided. For each of the pixels, the pixel output value corresponding to each of the scan frequencies is combined to produce a combined pixel out put value for each pixel. Systems and methods for improving the data capture of multi-spectral ultrasonic imaging are also disclosed.

主权项

1. A method of scanning a finger, comprising:
scanning a finger positioned on an imaging surface of an ultrasonic sensor with a plurality of ultrasonic scan frequencies; generating an ultrasonic image information set from a plurality of pixels of the ultrasonic sensor for each of the scan frequencies, the image information set including a pixel output value from each of the plurality of pixels, each pixel output value indicating an amount of energy reflected from the imaging surface; and combining the image information sets corresponding to each of the scan frequencies to generate a combined image information set, the combined image information set including combined pixel output values from each of the plurality of pixels.