How can we use external GPS with Iris 360 camera?

I am creating a virtual tour application which takes the 360 images from user computer and create a virtual tour with that images. The images are taken using Iris 360 camera and the images are taken at regular interval distance in the whole property. 

The main challenge i'm facing is to relate the images to one another based the image parameters so that this application can be used to create virtual tour for any property. So, i was thinking that i can use the GPS latitude and longitude values to relate the images to one another but, i'm not sure that the GPS parameters will help.

That was my idea to relate the images to one another. Any other suggestions or ideas will be helpful. 

Thanks