How to make your maps similar to Yandex.Maps using a quadcopter?

Question

GIS

Going like this:
1. Use a quadrocopter to fly around your city. Take pictures.
2. Collect a map of the city from the pictures
3. Make an analogue of Yandex maps of your city.
4. Use the 360 ​​camera to explore the city and make panoramas.
5. How to make panoramas on Yandex maps
Questions:
1. How to collect photos taken from a quadrocopter into a single picture so that you can make a panoramic view from above?
2. Can you tell me ready-made map engines so that you can overlay photos taken from a drone?

Answer 1

Client side: OpenLayers
Usage example: www.openstreetmap.org
Materials on the site:
gis-lab.info/qa/openlayers-begin.html
gis-lab.info/qa/ol-load.html