25/25 [==============================] - 7s 277ms/step - total_loss: 1.2122 - illumination_smoothness_loss: 0.1247 - spatial_constancy_loss: 0.2752 - color_constancy_loss: 0.0739 - exposure_loss: 0.7384 - val_total_loss: 1.4757 - val_illumination_smoothness_loss: 0.1253 - val_spatial_constancy_loss: 0.2453 - val_color_constancy_loss: 0.0393 - val_exposure_loss: 1.0658