Adding untagged photos to avnotes

You can create images files as notices with a special shorttag name as a “photonote”. I have done this with my phone and it works well. Unfortunably the quality of my camera is a bit low.
I like to add existing photos that have no taggs, because I took these photos with a camera without gps function.
My question is there a way to create shorttags for my photo without taggs? Is there a editior or any programatically way to create these shorttag format.

e.g. 0MbUI44S–.1.jpg is a valid format. Any idea how I can create this format manually.

Thank you very much for any idea.


i like this map,its perfect , its better to have a windows phone 10 app,pls create one ,thank you