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# Hello World VIO

We try to implement a complete VSLAM system from scratch, including visual front-end tracking, back-end optimization and loop detection modules. We try not to call third-party APIs and write all core algorithm modules by ourselves, including front-end feature extraction, tracking, PNP, etc. , and at the same time in the back-end module, we also try to implement back-end optimization without using any non-linear optimization library.