25/25 [==============================] - 7s 271ms/step - total_loss: 3.3210 - illumination_smoothness_loss: 0.4399 - spatial_constancy_loss: 1.2652e-04 - color_constancy_loss: 0.0030 - exposure_loss: 2.8781 - val_total_loss: 3.2557 - val_illumination_smoothness_loss: 0.3019 - val_spatial_constancy_loss: 1.3960e-04 - val_color_constancy_loss: 4.4128e-04 - val_exposure_loss: 2.9533