[pdal] reader plugin for Leica PTX

[Howard Butler]

Daniel,

We would be happy to merge a reader for this. Please make sure to include your excellent document and a some tests. A common test file we use is the 1.2-with-color.las file in the source tree if you have a convenient way to convert that to PTX.  

It would be too late to make the 2.4.0 release window, but it will be a nice inclusion for 2.5.0.

Thanks!

Howard

> On Mar 17, 2022, at 3:38 AM, Daniel Brookes <dbrookes at micromine.com> wrote:
> 
> Hi all.
>  
> Curious if there is any interest in supporting Leica PTX files in pdal. See more about the format here:http://paulbourke.net/dataformats/ptx/ . It’s a plain text format with one or more header:
>  
> number of columns
> number of rows
> st1 st2 st3 ; scanner registered position
> sx1 sx2 sx3 ; scanner registered axis 'X'
> sy1 sy2 sy3 ; scanner registered axis 'Y'
> sz1 sz2 sz3 ; scanner registered axis 'Z'
> r11 r12 r13 0 ; transformation matrix
> r21 r22 r23 0 ; this is a simple rotation and translation 4x4 matrix
> r31 r32 r33 0 ; just apply to each point to get the transformed coordinate
> tr1 tr2 tr3 1 ; use double-precision variables
>  
> followed by X, Y, Z and optional Intensity, R, G and B data. Similar to PTS.
>  
> I’m pretty sure this is an old out of fashion format, not sure many people would get use out of it. But since there is a PTS reader already I thought I’d maybe ask around.
>  
> We had a request to support it in our application and I rolled my own simple PTX reader plugin. I would give it some minor code clean ups first, but I’m happy to pull request it. I don’t have a writer though unfortunately 😉
>  
> Daniel Brookes | Software Developer
>  
> Micromine Pty Ltd
> e: dbrookes at micromine.com
>  
> <image001.gif>
>  
> 198ncd285k
> 
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