25/25 [==============================] - 7s 270ms/step - total_loss: 4.1537 - illumination_smoothness_loss: 1.2237 - spatial_constancy_loss: 6.5297e-06 - color_constancy_loss: 0.0027 - exposure_loss: 2.9273 - val_total_loss: 3.8239 - val_illumination_smoothness_loss: 0.8263 - val_spatial_constancy_loss: 1.3503e-05 - val_color_constancy_loss: 4.8064e-04 - val_exposure_loss: 2.9971