25/25 [==============================] - 7s 272ms/step - total_loss: 3.1971 - illumination_smoothness_loss: 0.3310 - spatial_constancy_loss: 1.8674e-04 - color_constancy_loss: 0.0031 - exposure_loss: 2.8628 - val_total_loss: 3.1741 - val_illumination_smoothness_loss: 0.2338 - val_spatial_constancy_loss: 1.9747e-04 - val_color_constancy_loss: 4.5618e-04 - val_exposure_loss: 2.9397