Patent ID: 11869229
Assignee: JAPAN DISPLAY INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A method of training a fingerprint image enhancing engine for use in a fingerprint capturing device, the method comprising:
producing a synthetic image dataset comprising plural pairs of synthetic images, each pair of synthetic images including a clean synthetic image and a raw s Trithetic image corresponding to the clean synthetic image, each raw synthetic image being produced according to a model of the fingerprint capturing device;
training a neural network using the synthetic image dataset;
generating a raw fingerprint image using a sensor and analog front end;
processing the raw fingerprint image using the neural network and the synthetic training weights to produce an enhanced fingerprint image;
producing a sensor image dataset comprising plural pairs of sensor images, each pair of sensor images including a raw sensor image and a corresponding clean sensor image;
adding the raw fingerprint image to the sensor image dataset as a first raw sensor image if the enhanced fingerprint image meets a first predetermined quality constraint;
processing the first raw sensor image to produce a processed image that meets a second predetermined quality constraint; and
adding the processed image that meets the second predetermined quality constraint to the sensor dataset as the corresponding clean sensor image that corresponds to the first raw sensor image.