25/25 [==============================] - 7s 278ms/step - total_loss: 1.1626 - illumination_smoothness_loss: 0.0790 - spatial_constancy_loss: 0.2834 - color_constancy_loss: 0.0753 - exposure_loss: 0.7248 - val_total_loss: 1.4285 - val_illumination_smoothness_loss: 0.0829 - val_spatial_constancy_loss: 0.2508 - val_color_constancy_loss: 0.0399 - val_exposure_loss: 1.0549