We call partial panoramas all those images notoriously wider than they are high and partial panoramas all those panoramas whose width does not cover the entire 360 degree around the horizon.
Pushing this criteria to an extreme, any image which is wider than it is high could be considered a partial panorama.
We can create partial panoramas in an analogous way to the one we've been usign so far to create 360 degree panoramas from multiple images, leaving out of the edition any or some of the source pictures so that the circle does not complete.
We'll also see other particular cases.
Create A Partial Panorama Stitching Photographs With Hugin
To create a Partial Panorama from combined images we'll use the same group of pictures which we have combined before to create a full 360 degree panorama :
From the original group of fourteen images that cover the entire way around the horizon we'll discard four of them making sure that those we'll use do combine into a single image. We'll choose to use the images numbered between 3 and 12, which we'll select to get the edition started and then drag the selection into Hugin's starting window :
Since this photographs have been taken with a regular camera with no special lenses or accessories, it is normal that Hugin can determine by itself the camera and lens type from the information saved by the camera into the files at photographing time, which is included into every single file loaded. So this happens this time. In Hugin's Asistant tab we can read that ten images have been loaded, with a normal lens type and their corresponding values for focal distance and its multiplier which corresponds to the camera model :
Next we'll go to the Images tab, where we can see the details of the loaded photographs. To create Control Points we'll use the default settings which are based on Hugin's specific detection engine, called Hugin's CPFind :
To ensure a better control points's detection quality, we'll increase its number from the default ten points from overlap which Hugin offers us up to 30 points for overlap :
At clicking on the Create Control Points button the control points detection window opens :
When the search process ends, the window closes itself and a dialog window tells us that, in this case, 251 control points have been added. We must accept by clicking on OK to continue :
Back on the Asistant tab in Hugin's main window, we can see that the program tells us that all images are connected by those 251 control points. Moreover, it tells us that the aligning of the pictures is still due, which we'll start by clicking on the Align button :
On doing so, a new Asistant window opens showing the internal processes of the aligning :
At the end of the process, the window closes automatically, while a new window opens with a preview of the panorama. It is the first image we have of the partial panorama we are creating, which shows us that its aspect makes sense. For now we can close this window since we don't need it :
Back on Hugin's main window, in the Asistant tab we can read that according to the program's criteria the adjustment is good, with an average distance between Control Points pairs of little over two pixels. However, the maximum registered distance is 35 pixels and since we count on over 250 control points pairs to combine just ten pictures, we can remove the most defective control points. For this we'll click on the Control Points button to open the editing window of these :
In the Control Points window we find a detailed list of them plus some aditional data, including the distance between control points pairs. To group the most defective control points pairs togheter we'll click on the Distance column header :
Now we can see that the list of control points pairs is ordered decreasingly according to the distance between control points pairs. Since we count on abundant control points pairs, we'll choose to remove all those whose distance between points exceeds five pixels :
With the help of the mouse or the computer's keyboard we'll select the first twenty two control points pairs, and clicking on the Delete button or hitting the keyboard's Delete key we'll remove the selection from the list :
The list has been refined and now the maximum distance between control points is 4.92 pixels :
Back on the program's main window, we can see that now the number of control points linking the photographs has been reduced to 229, and as a consequence of this change, it is neccesary to align the images again. Once again we'll click on the Align button :
Once again the asistant window pops up showing details of the internal process :
At the end of this process the window closes itself and the Asistant tab on Hugin's main window shows us the updated data : the average distance between control points pairs has been reduced to 1.6 pixels and the maximum distance barely exceeds 5 pixels. According to the program, the adjustment is good :
Simultaneously the panorama preview window has opened, which confirms us that the panorama we are creating has a coherent look :
We are ready to create the partial panorama. Once again in Hugin's main window we'll enter the Stitch tab, where we can find data such as the panorama's dimensions and some options we can edit or use the default values. We find that the default projection type is cylindrical, the one we need, so we won't modify it. To create a good quality image we'll choose a non compressed format such as PNG. Once we are sure we are satisfied with the values set we'll click on Stitch now :
In the dialog window that pops up we'll select a location and a name for the new panorama :
By clicking on Save a new window opens with details of the stitching internal processes :
After finalizing the last of these steps, the window will close automatically. In the location we had assigned to it and named as we had choosen, we find the new file :
The Partial Panorama created looks like this. Click on the image to see it as an interactive Virtual Tour :
Next we'll briefly mention some other types of partial panorama.
Create A Partial Panorama Editing On Camera
An alternative to the partial panorama digital editing done on computers is such editing done on camera at photographing time. Presently there is a high number of cameras offering including this ability among their features :
Click on the image to see it as an interactive Virtual Tour :
Create Partial Panoramas Trimming Down Photographs
Finally, another simple and usual way of creating partial panoramas is to timm down a regular photograph, usually removing one or two horizontal strips of it and sometimes also the sides, leaving the picture a more or less elongated shape which stands for a panoramic image. For example, by trimming down the upper part of this photograph :
We obtained this panorama. Click on the image to see it as an interactive Virtual Tour :
Since the part that interest us sits in the central area, in the next photograph we'll trimm down two strips, one in the upper part and the another one in the lower end :
This is the resulting partial panorama and clicking on the image we can see it as an interactive Virtual Tour :
In the last example we'll discard not only the upper and lower parts of the picture but also, to center it, a strip on its left side :
This is the result. As always, you can click on the image to see it as an interactive Virtual Tour :
Until now we have learned the techniques to photographs images for panoramas and ways of editing these images to convert them in 360 degree panoramas, 180 degree panoramas and partial panoramas. In the next page we'll see how this panoramas can be edited and converted into less well known projections.
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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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