Intrinsics setting when processing custom data

[yifliu3]

Dear devs,

Thanks for your great work! I have tried using the custom data and found results to be surprisingly good.

The question lies in that, as the intrinsics of the data is from COLMAP, I convert it into OpenCV format using the provided code, but I observed the result is nearly the same as the one without converting. I'm wondering is this indicates that both format of intrinsics are feasible to NoPoSplat even the data is from COLMAP.