I want to cover the tripod in my (360×180 degree) spherical panorama. How do I add a nadir cap?
There are several options. Peter Nyfeler has created a Photoshop action for adding a mirror ball nadir cap. Or you could use your own logo. The logo needs to be warped into the projection of the panorama, as follows: • Start a new PTGui project • Add your logo image to the project • Switch PTGui to Advanced mode • Go to Lens Parameters and select ‘Rectilinear’ and (e.g.) 60 degrees field of view. The value you enter here sets the size of the warped logo. • Panorama Settings: Equirectangular, 360×180 field of view • Image Parameters: set the Pitch angle of the image to -90 degrees • It’s not necessary to add control points or to optimize • Create Panorama tab: Width/Height: same as your original spherical panorama Output format: .psd or .tif Layers: blended panorama only • Then press ‘Create Panorama’ The result is a warped version of your logo. Overlaying the logo has to be done manually in a graphics editing program. A quick way to do this in Photoshop is by selecting the entire logo
