Method for training and testing obfuscation network capable of obfuscating data for privacy, and training device and testing device using the same

Abstract

A method of training an obfuscation network for obfuscating original data to protect personal information is provided. The method includes steps of a learning device, (a) inputting acquired training data into an obfuscation network to obfuscate the training data and inputting the obfuscated training data into an augmentation network to augment the obfuscated training data; (b) (i) inputting the augmented obfuscated training data into a learning network to generate first characteristic information and (ii) inputting the training data into the learning network to generate second characteristic information; and (c) training the obfuscation network such that (i) a first error, calculated by using the first and the second characteristic information, is minimized and (ii) a second error, calculated by using (ii-1) modified training data or modified obfuscated training data, and (ii-2) the obfuscated training data or the augmented obfuscated training data, is maximized.