For the past year, I have been trying many ways to improve the quality of my 360 Panoramics. I was never satisfied with the low quality panos that the DJI Fly app produced. Especially knowing that these do not utilise the raw high resolution DNG files that are available (if enabled in settings).
This is my own workflow for creating high resolution 360 panoramics using the DNGs produced by my Mini 2. I am posting it here in case it helps others. I am not saying this is perfect by any means.
Note: If your panoramic images are currently stored on a hard disk drive (HDD), and you have access to a Solid State Drive (SSD), such as your OS drive, I would highly recommend you copy the content to the SSD before starting this workflow. As this will drastically reduce the total execution time.
Step 1: Autogiga Pano
With Autopano Giga (APG) open, select the 2nd icon from the left, this will allow you to select the DNG files from your Pano folder. Typically, there are 26 DNGs for a 360 Pano.
The file selection window will open. If you sort by ‘Type’, this will sort the 26 DNGs so that they can be selected together.
Once the files are selected they will display in the left window. Now select the Settings icon (spanner) next to Detect.
You now need to change some settings, those highlighted in red. On the Detection tab, change the detection to High, 200 and Spherical.
On the Panorama tab, change the Default Projection to Spherical and the Default Crop to Maximum projection range.
On the Render tab, change the Format to PNG 16 Bits, Compression 7.
Click OK, and then click the first icon named Detect.
AGP will now analyse all images and detect the panoramic, this may take some time depending on the speed of your computer.
Once detection is complete, it will display a low quality preview of the pano in the right window
Now click on the Settings icon above the preview panorama
Change the Width to 16384px, as this is the maximum that Kuula can accept. Ensure that the Format is set to PNG 16 bit. Set the location where you want your rendered pano saved to, and then hit Render.
The Batch renderer will display the progress of the rendering task. Again, this can take several minutes to complete, depending on your computer.
Once the render is complete, you will here an audio notification and the Batch renderer window will show details about the final render.
Step 2: Photoshop
You can now close APG and open your image editing software, mine is Adobe Photoshop (PS), so the remainder of this workflow reflects that.
With 360 pano opened in PS, select the Magic Wand Tool (W) and then select the blank portion of the sky. When it is selected, you will the blank section is highlighted with a dotted line.
Occassionally, when filling selections, you are left with visible stitch lines. To prevent this, you need to expand the selection by 5px. To do this, from the Select menu, chose Modify > Expand and set the value to 5px. Note, when you click on OK, you will not see any visible change, don’t worry, it has done its thing.
Now you need to fill the blank Sky with ‘more sky’. To do this, I use Content-Aware. You can either select Fill from the Edit menu, or press SHIFT + F5.
Since there is a lot of blank space to fill, this may take some time. But once done, press CTRL + D to deselect the original selection. The sky should now be filled looking something like this …
You can now perform and post editing to boost the image. Quite often with 360s, I appear in the image, so I remove myself (and anything else I don’t want) using the Spot Healing Brush Tool (J).
Step 3: Kuula
When you are ready to upload to Kuula, save the image. You can use JPG or PNG, but I opt for the latter - although this does increase the file size. With Kuula open, select Upload > Single Image …
Browse to the saved 360 pano and upload you image. Place the blue crosshair where you want the 360 to be centred on, complete the metadata section on the right and select ‘Post It’ and you are done.
This is a 360 Pano generated using the DJI Fly app, which uses the low resolution JPG files:
This is a 360 Pano generated using the above workflow with the high resolution DNG files:
I hope this helps. Feel free to message me if you have any questions