How to approach the solution of the problem associated with machine vision?

Question

Python

I am studying to be a programmer. There was a question of the thesis. They suggested the topic - "analysis of the level of danger of the environment for blind people." As a result, the application must evaluate the level of danger based on the video stream of the camera and simultaneously notify the user with a sound signal. They said that the topic is complex and it will be enough even for a master's work.
I came across a video on the Internet about how drones navigate by points of interest, tracking them, relative to each other, moving. While I think to move in this direction.
Actually, I ask you to share theoretical material on this topic, books, articles, videos. In general, am I choosing the right approach? Perhaps someone will have ideas about implementation technologies. Please rate the complexity of the task. And in general, write any comments regarding this topic.