25/25 [==============================] - 7s 275ms/step - total_loss: 1.8216 - illumination_smoothness_loss: 0.2401 - spatial_constancy_loss: 0.0934 - color_constancy_loss: 0.0348 - exposure_loss: 1.4532 - val_total_loss: 1.6855 - val_illumination_smoothness_loss: 0.2599 - val_spatial_constancy_loss: 0.1776 - val_color_constancy_loss: 0.0229 - val_exposure_loss: 1.2250