What is loop closer in VSLAM and Scan matching

Question

Accepted Answer

Loop closer in VSLAM and Scan matching is a technique used to optimize the trajectory of a robot by closing loops in the map.

Loop closer is responsible for correcting accumulated errors in the estimated trajectory of a robot in VSLAM.
It helps in aligning the current scan data with the previously mapped environment to improve localization accuracy.
Loop closer can be implemented using techniques like loop closure detection, loop constraint optimization, and loop error minimization.
An example of loop closer in action is when a robot revisits a previously visited location and the loop closer algorithm corrects the trajectory to match the known map.

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