25/25 [==============================] - 7s 273ms/step - total_loss: 2.8443 - illumination_smoothness_loss: 0.1049 - spatial_constancy_loss: 0.0011 - color_constancy_loss: 0.0043 - exposure_loss: 2.7341 - val_total_loss: 2.9096 - val_illumination_smoothness_loss: 0.0936 - val_spatial_constancy_loss: 0.0012 - val_color_constancy_loss: 6.7707e-04 - val_exposure_loss: 2.8142