25/25 [==============================] - 7s 277ms/step - total_loss: 1.1720 - illumination_smoothness_loss: 0.0882 - spatial_constancy_loss: 0.2821 - color_constancy_loss: 0.0754 - exposure_loss: 0.7264 - val_total_loss: 1.4372 - val_illumination_smoothness_loss: 0.0907 - val_spatial_constancy_loss: 0.2504 - val_color_constancy_loss: 0.0405 - val_exposure_loss: 1.0557