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

Claim 0:
1. 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 synthetic 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 the model of the fingerprint capturing device based on electrical and mechanical design constraints for the fingerprint capturing device;
generating a mechanical model based on mechanical design constraints for the fingerprint capturing device;
performing a mechanical simulation using the mechanical model to produce simulated electrical parameters of the fingerprint capturing device;
performing an electrical simulation using the simulated electrical parameters and electrical design parameters of the fingerprint capturing device to produce a range of equivalent transform functions; and
generating each raw synthetic image by applying a selected equivalent transform function randomly selected from the range of equivalent transform functions to each corresponding clean synthetic image.