wonder-sk / point-cloud-experiments

Just some prototyping for QGIS point clouds implementation
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point-cloud-experiments

Just some prototyping for QGIS point clouds implementation

A quick 2D rendering test

Built EPT from http://maps.zh.ch/download/hoehen/2014/lidar/26850_12580.laz (81 MB LAZ, ~15M points)

2D Rendering of ~366K points by starting at node 1-0-0-0 and traversing down to level 3 (in total 7 octree nodes):

Data type Total run time Total EPT index size
Zstandard 50 ms 213 MB
Binary 38 ms 655 MB
Laszip 510 ms 82 MB

(Out of the total run time, rendering itself took ~8ms, the rest was spent on loading data)