To convert fisheye-projected panoramas from popular 360 cameras to equirectangular panoramas, you can use a software tool like NADIRPATCH.com .
Step 1: Prepare Your Images
Before beginning the conversion process, ensure you have your fisheye images ready.
These images typically come from 360 cameras like the Ricoh Theta, Insta360, or GoPro Fusion.
They usually look like two circular images on a black background, each representing a 180-degree view captured by the dual fisheye lenses of the camera.
Step 2: NADIRPATCH.com
Navigate to the website NADIRPATCH.com. Depending on your volume of conversions you might need an account to login, but a free account is enough.
Step 3: Upload Your Fisheye Images
Once logged in, find the option to upload or import your images.
Select the fisheye images from your device.
Step 4: Configure Conversion Settings
After uploading, you should see options for configuring your panorama conversion.
Select the projection type as "Fisheye" and specify that you want to convert it to "Equirectangular".
The exact link for this is here : https://nadirpatch.com/gear360stitching/
Step 7: Review and Download
After the conversion is complete, you will get the preview of the equirectangular panorama.
Review the panorama for any errors in stitching or alignment.
Once satisfied, download the final equirectangular panorama.
Step 8: Upload to a Viewing Platform
To use your new panorama for virtual tours or VR, upload the equirectangular image to a platform that supports 360-degree content, such as Teliportme.com
Otherwise, here's a list of panorama editing programs provided by the producers of popular spherical cameras. Those apps will allow you to make the conversion on your PC:
Rioch Theta S/SC/V/Z1 - Ricoh Theta basic app
Insta360 - Insta360 Studio
GoPRO - Fusion Studio
Kandao Qoocam 8K - Kandao Studio
Xiaomi Mi Sphere/MADV - Windows PC / Mac OSX 2
Samsung Gear360 - ActionDirector
PS: Some of these softwares might not be updated or not working. We try our best to update this list but they are controlled by other companies.