"What is crooked cannot be made straight" said the wise King Solomon, and yet we will try to make straight the horizon and vertical lines of the "crooked" spherical panorama. Correction of the horizon of the S-shaped horizon of the panorama.
Many novice photographers have probably seen interactive panoramas on the Internet where they can spin and see everything around them. Often such content is called 3d panoramas.
The order is as follows: 1) upload to the site spherical panoramas from which you plan to create a virtual tour; 2) from the list of uploaded panoramas add each panorama to the virtual tour (Add to 3D tour link); 3) open the created virtual tour, edit the panorama order, select the main panorama, set transition points (tunnels).