25/25 [==============================] - 7s 265ms/step - total_loss: 2.5184 - illumination_smoothness_loss: 0.1584 - spatial_constancy_loss: 0.0103 - color_constancy_loss: 0.0093 - exposure_loss: 2.3403 - val_total_loss: 2.4698 - val_illumination_smoothness_loss: 0.1949 - val_spatial_constancy_loss: 0.0194 - val_color_constancy_loss: 0.0031 - val_exposure_loss: 2.2524