Borbin the 🐱

Panotools projections example

20 September, 2023


The panotools projections are very versatile to achieve different mappings.

I wanted to take a photo of a tall object but could not step back for a normal view angle. In this case to capture the restaurant with its palm trees from the pathway.


Both full frame fisheye pictures for a good vertical and horizontal coverage to start with:


Each of the projection has a different mapping. The Transversal projections (rotated 90°) are not used here because of the horizontal distortion:


The full frame fisheye projection:


The Equirectangular projection:


The Vedutismo projection:


The Cylindric projection:


The Rectangular projection:


And the Mercator projection.
The restaurant with the largest 🌴 in Hawaii.


See also Panotools projection, The Balcony Panorama and Stereographic projection.


The Balcony Panorama

20 September, 2023


With the limited view from a balcony, the result is a half spherical panorama with 180°x180°.
This is quite different from the Tower Panorama.

In the Balcony Panorama, the half sphere is to one side only:


In this example, 6 full frame fisheye pictures cover the 180°x180°:


The 360°x180° equirectangular panorama editor view displays only half the view as expected:


The cropped picture shows the equirectangular projection of the half sphere:


Different projection can be used to minimize the visible distortion.
The Transversal projections are ideal because of the large vertical field of view.

The Transversal Equirectangular projection:


or the edge-of-the-world projection:


The Transversal Cylindrical projection:


The Transversal Mercator projection:


The Transversal Vedutismo projection:


The Stereographic (circular fisheye) projection:


And the little Planet projection:



Compared to the Cylindrical projection:


And the normal rectangular projection.
That wide angle lens has to cover 150°. Good to have a 🐟👁:


See also Panotools projection, Panotools projections example and Stereographic projection.


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