25/25 [==============================] - 7s 269ms/step - total_loss: 1.1774 - illumination_smoothness_loss: 0.0928 - spatial_constancy_loss: 0.2814 - color_constancy_loss: 0.0749 - exposure_loss: 0.7283 - val_total_loss: 1.4439 - val_illumination_smoothness_loss: 0.0968 - val_spatial_constancy_loss: 0.2491 - val_color_constancy_loss: 0.0397 - val_exposure_loss: 1.0583