25/25 [==============================] - 7s 268ms/step - total_loss: 1.1827 - illumination_smoothness_loss: 0.0979 - spatial_constancy_loss: 0.2802 - color_constancy_loss: 0.0750 - exposure_loss: 0.7296 - val_total_loss: 1.4488 - val_illumination_smoothness_loss: 0.1015 - val_spatial_constancy_loss: 0.2496 - val_color_constancy_loss: 0.0404 - val_exposure_loss: 1.0573