25/25 [==============================] - 7s 271ms/step - total_loss: 1.1225 - illumination_smoothness_loss: 0.0412 - spatial_constancy_loss: 0.2928 - color_constancy_loss: 0.0772 - exposure_loss: 0.7114 - val_total_loss: 1.3848 - val_illumination_smoothness_loss: 0.0433 - val_spatial_constancy_loss: 0.2569 - val_color_constancy_loss: 0.0417 - val_exposure_loss: 1.0428