Add An Image Cap On The Nadir Of A Spherical Panorama
On this page we'll see how to cover the nadir of a Spherical Panorama with an image cap using the commercial software Pano2VR.
We'll complete the process in three steps : in the first, we'll convert the panoramic image into a format which will allow us to edit with ease, then we'll edit the picture by pasting over it the image cap and finally we'll convert the edited image back to a panorama as the one it was in the beggining.
Conversion Of the Equirectangular Panorama Into Cube Faces
To get started we'll open our spherical image by dragging it into Pano2VR's main window. For this demonstration we'll use the 360 x 180 degree image with a hole in the nadir that we have previously created with Hugin :
On the left side pane Input File appears the preview of the panorama togheter with some aditional data :
On the right side pane Output File we'll choose Transformation from the drop-down menu as a new output format :
We'll click on Add to see the transformation options :
Then a new program's window will open with the options to configure. We'll display the Types menu :
At this point there are different format types which would let us to edit the nadir. In our case we'll opt for the Cube Faces type :
With the format already selected, we'll make sure to give the cubes to be created a size large enough as not to loose image quality over the process. Keep in mind that this first transformation will be followed by two more, so it is always recommended to work on large images which could then be reduced before publishing. On this same window we'll choose a file format for the cubes, as well as a root-name for these, which will be completed with consecutive numbers. The default location is at the same folder where the source image is or we can choose another one before we Accept to get the process started :
A dialog window will ask if we want to process the image immediately :
After accepting, a progress indicator will show us the developent of the process :
The cubes have been created and we can find them at the location we had defined :
These are the created cubes. Four of them are side views, the fifth is the panorama's zenith and the last one its nadir, where can be seen the hole we had cut and which now we intend to cover up with an image. In all of them we can see Pano2VR watermarks since we are using the unregistered version of the program :
Editing The Nadir With Gimp
For a few moments we'll leave Pano2VR aside and work with a common image editor. This time we'll opt to use Gimp. To get started, let's drag the cube that shows the nadir into Gimp's main window to open the file :
Immediately we'll see the cube face open in the program's main window :
To cover the hole in the center of the image we'll use a screen capture of 360 Facil's homepage which we have previoulsy reduced. To open it with no delay over the desired location, we can display theFile menu and click on Open as layers :
Then a dialog window will open where we can search for and select the cap image :
It only takes to accept for the cap image to appear positioned and occupying a layer above the panorama image :
Since the image occupies the precise place it is supposed to occupy, we'll confirm the relative positioning of the layers by dispalying the Image menu and clicking on Merge Visible Layers :
We can now save the changes on the cube by displaying the File menu and clicking on Save. We could have also choosen to save the modified cube with a different name but we'll skip this step :
This is what the cube face we have modified looks like. The watermarks created by Pano2VR at the begging of the process are still visible but there are no visible watermarks over the image we have pasted, although these will change later :
The folder with the refreshed cube faces shows the news :
These are now the cube faces we'll count on to recreate the Spherical Panorama. However, before going on to this task we'll stop for a moment to repeat the edition of the cube face, this time with the world's most popular image editor.
Alternative : Editing The Nadir With Adobe Photoshop
To get started we'll drag the file corresponding to the cube face of our interest to Adobe Photoshop's main window to open it :
Immediately we can see the cube face within a window on the program's main window :
Next we'll repeat the procedure, this time dragging the image we are going to use as a nadir cap :
A second window opens into the main window, this one containing the cap image :
While this window remains active we'll display the Select menu and click on All :
While still keeping the active selection we'll display the Edit menu and click on Copy to copy the cap image to our computer's clipboard :
With a click we'll switch the program focus to the window that contains the nadir's image and we'll display the Edit menu to click on Paste :
We see that the cap image appears pasted and centered over the hole in the center of the nadir which we were intending to cover :
Since the image sits in its definitive position, it is convenient to fix the layers by dispalying the Layer menu and clicking on Merge visible layers :
We can already save the changes to the cube by displaying the File menu and clicking on Save. We could have also choosen to save this cube's modification with a different filename but we'll skip this step :
This is what the cube face we have modified looks like. On it the watermaks created by Pano2VR at the beggining of the process are still visible but there are no visible watermarks over the cap image we have pasted, altough this will change later :
The folder with the refreshed cube faces shows the news :
These are now the cube faces we count on to recreate the Spherical Panorama and the way to make it is to reverse the transformation done with Pano2VR :
Reconversion To Spherical Format With Pano2VR
To get it done we'll select and drag all cube faces including the one we have edited to Pano2VR's main window to use them as input files :
We see that from the very first preview the program acomodates the cube faces the way they recreate it :
Repeating the steps we had gone previously, on the output file pane we'll choose Transformation once again :
Once again we'll click on Add to choose the image format that we prefer :
Now on the default format preview we can see our scene's new nadir :
This time, from the Types drop-down menu we'll chosee Equirectangular :
As we have seen, this is the window to choose a name and location for the output file, as well as its format and the dimensions of the image :
Once again, the program will ask us if it must immediately execute the order of the file creation :
For a few instants while the remapping process takes place we see the progress indicator :
Since we had use the default location, the created file is at the same folder where we had saved all the intermediate files :
At the end of the process we have the created file with a nadir cap. To the visible watermarks from Pano2VR dating back to this page's first step new marks have been added on the last step which are visible even over the nadir cap, so the image is quite overloaded with watermarks. All these can be avoided by using the registered version of Pano2VR. To see the created Spherical Panorama With Logo as a Virtual Tour click on the image :
On the next page we'll create a complete 360 x 180 degree spherical image including a photographed nadir.
Add A Question Or Comment
All fields are optional. Messages not regarding the subject may be moderated.
If you like 360 Facil please share it with your social networks
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
Find us in Facebook and thank you for your Like.