About Spherical panoramic photos model

[ppkong]

I use 9 panoramic image to do modeling, Align photo have no problem.but the result of dense point and model there are always a lot of places lack, I do not know what is the reason? Can someone help me?

[Marcel]

I don't think Photoscan is made working with panoramic images,  I'm actually surprised it works at all. It is much faster to use regular images,  and you will get better results.

[Mr Whippy]

What resolution are the panoramic images?

In the example image too, the distance between the first and last panorama seem relatively close given the size/scale of the environment you want to have a dense cloud constructed for.
Remember a point in space can only be created where it can be seen from several locations. So you tend to want more spaced out with good overlap images.
Right now you have loads of overlap but not much actual movement of the camera.