opencv is a computer vision library
There is a lot of information under c++ and python
There is less information under C#
It's all because the evil Microsoft charges everything, and Chinese people don't want to use it, so there are not many jobs.
There is an opencvSharp library that can be used.
The first program is linked as follows:
https://blog.csdn.net/bayinglong/article/details/84258687
According to this link, you can collect information slowly.
As long as you have a sense of programming and have information in a certain field on hand, it is not too difficult to engage in engineering.