25/25 [==============================] - 7s 277ms/step - total_loss: 1.1878 - illumination_smoothness_loss: 0.1028 - spatial_constancy_loss: 0.2800 - color_constancy_loss: 0.0748 - exposure_loss: 0.7302 - val_total_loss: 1.4537 - val_illumination_smoothness_loss: 0.1054 - val_spatial_constancy_loss: 0.2479 - val_color_constancy_loss: 0.0398 - val_exposure_loss: 1.0606