25/25 [==============================] - 7s 278ms/step - total_loss: 1.1576 - illumination_smoothness_loss: 0.0744 - spatial_constancy_loss: 0.2851 - color_constancy_loss: 0.0759 - exposure_loss: 0.7222 - val_total_loss: 1.4213 - val_illumination_smoothness_loss: 0.0756 - val_spatial_constancy_loss: 0.2509 - val_color_constancy_loss: 0.0403 - val_exposure_loss: 1.0545