Hi everyone,
I'm working with data collected using a Trimble MX50 mobile mapping system and processed in Trimble Business Center. The trajectory was processed using a base station with grid coordinates and the dataset has been georeferenced in TBC.
After processing, I exported the point cloud using the TMX export option with timestamps included.
During analysis of the data, I separated points by laser (left vs right scanner) and inspected points around the same timestamp. When visualizing the points from both scanners around the same timestamp window, I noticed that a lane marking appears duplicated.
Both sets of points correspond to the same object and the same timestamp, but the lane marking appears as two parallel lines. One of the lines also appears to have noticeably lower point density than the other.
From what I understand, since the data has already been georeferenced and the lever arms and boresight calibration should be applied during processing, I would expect both scanners to align closely on the same feature.
I'm trying to determine whether this behavior is expected due to scanner geometry or if it could indicate a calibration issue (e.g., boresight misalignment or lever arm error).
Additional details:
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System: Trimble MX50
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Processing software: Trimble Business Center
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Export format: TMX with timestamps
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Comparison done using points from identical timestamps
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The separation appears consistent along the lane marking
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The two lines correspond to left and right scanners respectively
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Hoang Bach Cao
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