25/25 [==============================] - 7s 263ms/step - total_loss: 2.9216 - illumination_smoothness_loss: 0.1294 - spatial_constancy_loss: 6.0396e-04 - color_constancy_loss: 0.0037 - exposure_loss: 2.7879 - val_total_loss: 2.9737 - val_illumination_smoothness_loss: 0.1028 - val_spatial_constancy_loss: 6.3615e-04 - val_color_constancy_loss: 5.6798e-04 - val_exposure_loss: 2.8697