[pdal] LAS to PCD conversion by preserving original coordinates?

[Andrew Bell]

Hi Shukhrat,

1) Many PCL algorithms are now implemented natively in PDAL, eliminating
the need to convert to PCD.
2) PDAL shifts points to use the minimum x/y/z of the original pointcloud
as the origin.  This is done because the standard point types in PCL are
single-precision, while PDAL stores point data in double-precision.
Without such a shift, significant and important precision would be lost for
some applications.  You can use the offset in the PCD writer to control
this behavior (provide the X/Y/Z minimum as the offset to get back to the
original locations).  You can also provide a scale factor to apply if
desired.
3) PCD has no concept of spatial reference.


On Tue, Jul 16, 2019 at 10:32 PM Shukhrat <shukhrat811 at gmail.com> wrote:

> Hello,
>
> I need to convert files from LAS format into PCD format. I tried PDAL
> <https://gis.stackexchange.com/questions/250714/converting-las-to-pcd-file-using-pdal>,
> but it doesn't preserve original coordinates in output file.
>
> pdal translate input.las output.pcd
>
> It changes coordinates from original (EPSG:28355) into some local
> coordinates. Can someone help me to work around so I could get original
> coordinates in output PCD file?
> Thanks,
>
> Best regards,
> Shukhrat
> _______________________________________________
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> pdal at lists.osgeo.org
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-- 
Andrew Bell
andrew.bell.ia at gmail.com
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