circle blur on my own datasets.

[StarsTesla]

Hi there, I test the code on the datasets from yours, it shows fine, but when I tried to test on my own data, it seems that there is always a circle blur on the top of the output images.

Data was shot by iPhone, extract images by ffmepg, and use the scripts/local_colmap_and_resize.sh to extract the pose.

[jonbarron]

Seems like you're probably using the wrong camera model (maybe fisheye when you should be using perspective?). I'll defer to @bmild's expertise here.