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

Claim 6:
7. An apparatus for training a fingerprint image enhancing engine for use in a fingerprint capturing device, the apparatus comprising:
processing circuitry configured as a synthetic image dataset generator configured to produce 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;
the processing circuitry is further configured as a neural network trainer configured to train a neural network using the synthetic image dataset;
the processing circuitry is further configured to generate the model of the fingerprint capturing device based on electrical and mechanical design constraints for the fingerprint capturing device;
the processing circuitry is further configured to generate a mechanical model based on mechanical design constraints for the fingerprint capturing device;
the processing circuitry is further configured to perform a mechanical simulation using the mechanical model to produce simulated electrical parameters of the fingerprint capturing device;
the processing circuitry is further configured to perform 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
the processing circuitry is further configured to generate 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.