25/25 [==============================] - 7s 263ms/step - total_loss: 3.1008 - illumination_smoothness_loss: 0.2506 - spatial_constancy_loss: 2.5713e-04 - color_constancy_loss: 0.0032 - exposure_loss: 2.8468 - val_total_loss: 3.1062 - val_illumination_smoothness_loss: 0.1804 - val_spatial_constancy_loss: 2.6610e-04 - val_color_constancy_loss: 4.7632e-04 - val_exposure_loss: 2.9251