Autopano Video - Nadir patching
Shooting 360° videos, as well as shooting images to create virtual tours, are sometimes not shot completely, mainly at the Nadir where is visible a black hole.
In Video stitching, it depends on the hardware used (RIG). This tutorial will explain how to patch the Nadir with a logo or any other graphics file.
Here is the videos shot that will be used to illustrate the tutorial:
6 videos shot with a RIG mounted with GoPro HD3 cameras, ie 5 cameras placed horizontally and one at the Zenith, so there is no video flow at the Nadir, the result can be anticipated, there will be a hole at the Nadir!
First of all, it is necessary to stitch the videos:
- Import the videos in Autopano Video
- Synchronize the audio flows
- Process to the Stitching using the Stitch As option
The Reference panorama is created:
Now, it only needs to be open in Autopano Giga to add the Nadir patch and save the Reference panorama to update it in Autopano Video.
Editing the Reference panorama
Double click on the thumbnail to open the Reference panorama in Autopano (Pro or Giga), here is what appears:
Apply a 90° rotation to see the Nadir correctly:
Add the Nadir patch file to apply to the Nadir, it is important to get it in .png format to keep the transparency, mainly if the image is circular like this one:
To add the file to Autopano, simply use the relevant option via the Layers editor:
The image appears into the first layer of the panorama.
Create a new layer named 'Patch' via the Layers editor:
Naming the layer like so will make it stay separate from the rest of the panorama during the blending. To rename the new layer, just right-click the layer and select Rename:
It requires you to move the patch image to the 'Patch' layer.
The layer editor now looks like:
The image is placed on the Editing area, it will have to be moved using the Move Images mode (Single Image) to place it on the Nadir hole:
Now, straighten the panorama using the 90° rotation inverted of the one used earlier, then Save the panorama (project).
And finally close Autopano to go back to Autopano Video, the Reference panorama is updated with the Nadir patch applied:
Finally render the video with the desired render settings and here it is!