Besides the most common panoramic projections such as Cylindrical and Spherical, panoramas can also be presented in a variety of lesser known projections, some of which we'll introduce on this page.
Besides the type of projection, the aspect of the image depends on other variables such as the vertical and horizonal fields of view, the centering point of the projection, the ratio between sides, etc.
Edit projections with Hugin
Hugin lets us create a panorama with an unusual projection type both from a group of images to stitch and from a panorama already created. For this brief demonstration, we'll start with a Spherical or Equirectangular panorama created in advance. To get the transformation started, we'll drag the image into Hugin's main window :
Being not an image taken straight out of the camera, the photograph we'll use does not contain any metadata recorded by that regarding the type of lens, focal distance, etc, so Hugin will prompt for such information showing a dialog window with default values not matching our example :
We'll establish Imagen Equirectangular / Equirectangular Image as lens type and as horizontal field of view we'll type in 360 degree. Knowing this data, Hugin will complete the missing fields by itself :
On loading the image, we'll see Hugin's main window with the values corresponding to our photograph registered :
We'll click on the last Stitch / Empalmador tab where we'll find our image's data including the original projection type :
By displaying the menu we'll see the projection options that we can get with Hugin. For this example we'll transform our equirecagular image into a Sinusoidal one :
For the horizontal and vertical fields of view we'll use the real values to include the entire photograph, ie, 360 degree and 180 degree :
We'll display the menu to select an image format for our new projection :
To create a file with no compression we can select the PNG format and next we'll click on Stitch Now / Combinar Ahora to get the creation of the new image started :
A new dialog window will pop up where we can choose a location and a name for the file to be created :
After accepting, a new Hugin's window will appear showing us details of the internal processes of the creation of the new projection for our panorama :
After finishing the process the winodw will automatically close. In the location we had selected we can find the new file bearing the name choosen on the previous step. The preview gives us a first image of the created projection :
To check out the influence of the settings on the final shape of the panorama, before ending this brief demonstration we'll go back to the Stitcher / Empalmador tab in Hugin's main window. This time we'll cut the value asigned to the horizontal field of view to a half and next we'll click again on Stitch Now / Combinar Ahora :
To use a different name to call this variant, we'll modify the recently used name by adding it a number :
Once again, the creation of the new panoramic projection's internal processes's window opens :
After finalizing the process the window closes itself and in the selected location we can appreciate that the new image spans a much more narrow panorama and it differs greatly from the example created in the first place :
We hace created two different sinusoidal projections from the same panorama. Next, starting from the same Equirectangular source panorama we'll make a brief review of projection types that can be created with Hugin.
Some Projections Created With Hugin
The examples below are some of the lesser known projections that can be created from a Spherical Panorama using Hugin :
Azimutal Area Equal Of Lambert
Cylindrical Area Equal Of Lambert
Conical Area Equal Of Albers
Cylindrical Of Miller
Equirectangular Of Panini
So far we have been combining photographs to create panoramas and we have also edited these and their projections to give them different looks always in static ways and in two dimensions. Starting from the next page we'll see how to insert panoramas into webpages and how to give them movement, depth, perspective and interactivity.
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With any camera
360 Degree Interactive Panoramas
In Three Easy Steps
After reading this tutorial you'll be able to create your first 360 degree interactive photography with the camera you already have :
1 - Photograph
Take one or more pictures of the place you want to show.
2 - Edit
Convert your pictures into 360 degree panoramas.
3 - Publish
Make your panoramas interactive and available to the world on the internet.
If a picture is worth a thousand words, a 360 degree interactive panorama is worth a thousand pictures...
Online Virtual Tour Creator
Using the online virtual tour creator you can :
Convert your 360 degree pictures to virtual tours with a single click.
Insert your virtual tours into web sites, emails, blogs or wherever you like by just copying and pasting a text.
Know in a practical way all kinds of 360 degree pictures.
Discover that you can create hundreds of interactive virtual tours just as easily as you take pictures with your camera.
Check that with just one click from your camera and another click from your mouse it is possible to create a 360 degree interactive virtual tour out of nothing. And completely free of charge!!!
You can get started right now, even if you don't have a camera
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