Boundary from Points

Boundary from Points

I have a point cloud and need to process a very detailed boundary around the outer points. Is there a tool in QGIS? Convex hull is not detailed enough.

Try Concave hull, What are Definition, Algorithms and Practical Solutions for Concave Hull?

Concave hull has a smaller area, and most of implementations allows you to tune how small and precise resulting polygon should be.

In QGIS, many of the really good tools are in the processing toolbox; you need 'concave hull':

Try it with different threshold values for different levels of detail:

Finally, add a 10% buffer around the outside to make it resemble the sketch you provided:

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