Image Pre-Edition With Adobe Photoshop
On this page we will learn how to delete the nodal rotator from the original source images to maximize the area completely visible in a Spherical Panorama, using this excellent commercial image editor, one of the world's most popular programs.
In the following pages we'll create a Spherical Panorama With A Logo capping the nadir using the shots we'll pre-edit here.
For our example we count on a Spherical Panorama photographed in nine shots, one of them pointing at the zenith, six shots pointing at the sides and two shots pointing at the nadir, the later ones rotating the nodal rotator to one side and to the other successively :
We are going to work over the last two images, the only ones where the rotator we intend to delete is visible. To get started, we'll open the first image with Adobe Photoshop, either dragging the file into the program's main window or opening it from the File menu :
The opened image is visible and in the blue window frame or chrome we see the file name :
Displaying the Select menu we'll click on All or on our keyboard we may hit the Control + A key combination to select the entire image :
Next, dispaying the Edit menu or hitting the Control + C key combination we'll copy the selection to the computer's clipboard :
While the copied image remains on the clipboard it only takes to create a new document for it to acquire the dimensions of the image in the clipboard, so that by simply displaying the File menu we'll click on New or, even easier, by just hitting the Control + N key combination we'll open the new document creation dialog window :
In the recently opened dialog box we can see that the dimensions of the document to be created are those of the image we have in the clipboard. Before clicking in OK to accept, we must make sure that the selection checkbox for the content says Transparent :
A new document with transparent background has been opened in Photoshop's main window, in front of the file opened in the beginning and with the same dimensions of it :
Since the iumage we want to edit is still in the clipboard, we are ready to paste it over the new document window, either by the Control + V key combination as well as by displaying the Edit menu and clicking on Paste :
Now we can see that the created document shows, in front of the transparent background, the original image of the nadir of our panorama :
At this point, it will be more comfortable to maximize the new document window to occupy with it the whole Photoshop's window. It is also recommendable to close the window we had opened in the first place, since we'll no longer work over this file :
We are ready to crop out the parts of the image that are not serving our project. Out of the many Photoshop tools we could use for this, in this example we'll start by making active the Circle Select tool in the tools's menu :
With the help of the mouse we'll trace a circle or ellipse encircling the nodal rotator in our selection :
Hitting the Delete key of our keyboard, we'll remove the contents of the selected area, making the transparent background of the document visible :
Next we could choose to use the Polygonal Lasso tool to select the rest of the nodal rotator which is still visible :
Here we see the selected area :
A new hit on the Delete key and the rotator is completely gone of our image :
By clicking anywhere in the image with the Rectangular Marquee tool active we'll remove the selection to be able to go on working :
Our nadir image without nodal rotator is already defined. It is time to save it by creating a new file, for which we'll display the File menu and click on Save or hit the Control + Mayuscula + S key combination to open the corresponding dialog window :
In the window that opens we'll choose a name for the new file, as well as its location in the hard disk and an image format. It is recommended to use a filename different from the file over which we have worked to have an option to restart the whole process if for any reason this would be necessary. As for the image format, it is necessary that it is of a type that allows to save the image in layers, to be able to keep the transparency on the sector we have cropped out, such as PNG :
A new window will open with advanced PNG saving options which we can skip altogheter by clicking on the default option and accepting to create the file :
The new edited nadir is on the location we had asigned to it, in this case, the same folder where the original source image from which we have created the new one is, as well as the rest of the shots that will stitch into a spherical panorama :
This would be the aspect of the new image if we would opt for publishing it :
Now that we have created one of the files that will be part of the nadir of our panorama, we are ready to repeat step by step the whole process with the second image :
We'l naturally get started by opening the file with Adobe Photoshop :
We'l continue by creating a new transparent document over which we'll edit the image that we need :
We'll asign a new name to the file and save the image :
This would be the aspect of our document if we would opt for publishing it :
Having been created both documents on the same folder with the original source shots, we can remove those shots taken pointing at the nadir, leaving in their places the images we have edited :
Our photographs are now optimized to create from them the most ample shperical panorama possible, minimizing the empty spot on the nadir, which we'll opportunely cover with a Logo. It is time to create the panorama.
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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...
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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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