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Obstacles removed from occupancygrid #1602

@sandeepdutta

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@sandeepdutta

Hello Mathieu,

Our setup has two depth cameras (one facing forward, the other facing backwards). In mapping mode
(Mem/IncrementalMemory = True), some obstacles are removed from the Occupancy grid as the robot
moves and turns through the environment, it seems some filter kicks in and removed some obstacles if
they are not visible for some poses. Are there any parameters we can tune to change this behavior ?
It is more aggressive when "RayTracing" is turned on.

Best Regards
Sandeep

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