9.4.4.1 Fusion
Fusion Setting
Description
Min Distance
The minimum distance from the sensor to a point. Use to cut points on the
drone, or potentially noise from birds / insects.
Max Distance
The maximum distance from the sensor to a point. If flight lines are closer
together, this may be worth changing down to decrease overlap.
Cut degrees
The angle that is cut out of 360° sensor. This is taken from the center of
the top of the lidar sensor. This is cut out to ignore the returns taken from
the drone. This may need to be changed if the scanner is trying to capture
horizontal data.
Deci distance
The minimum distance between returns in-line with the laser scanner.
This can ensure a more consistent point density and faster processing
times. Set to zero to disable.
Deci angle
The maximum angle that a laser return can be. This can be changed to
avoid getting a returns off surfaces that are not very oblique. A side effect
of this setting is that power lines and small features are sometimes
missed. Set to zero to disable.
9.4.4.2 Combined Decimation:
Decimation of data is an additional step and will occur after the data is fused together. These
settings refer to the export of a decimated point cloud, which takes the best data from the
closest flight lines to get the most accurate point cloud. To enable this step the
Combined Deci
function must be selected in the exports tab of the Nextcore software.
This is very useful as it can significantly reduce the size of point cloud whilst still retaining good
coverage and highest accuracy.
Min Dist
This is the minimum distance between points within the dataset.
Decreasing this increases density considerably. ~0.1m is ~100ppm
2
~0.05m is ~400ppm
2
Max Dist
The maximum distance between data between flight lines, increasing this
will allow more data from other flight lines. It is not recommended to
change this setting.
Version 1.1
NextCore RN50 User Guide
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Summary of Contents for NextCore RN50
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