why divide intensity by 500 in data.py?

[jxl0131]

Hi! I found intensity term is difficult to convergence during trainning, is it a common phenomenon Or my own problem? What's more, i found you divide intensity by 500 in data.py before trainning, why do this? https://github.com/fnzhan/EMLight/blob/3a52b3ac8656e67a825d44b398cd37a1467117cc/RegressionNetwork/data.py#L71

Best wishes!