**Appendix A**

The calibration results of our digital hemispherical photography (DHP) system (Panel 1), and results cited from reference document provided by CAN-EYE software (Panel 2). This is a proof to verify that our DHP system can generate reliable model outputs in CAN-EYE software. Note that two DHP systems use different cameras, fisheye lens and picture sizes, thus they have different parameters for characterizing optical center position and projection function.
