<div dir="ltr"><div dir="ltr"><div>-- Resending it again with reduced size, please ignore if received twice. --</div><div><br></div>Thanks for the detailed instructions.<div>Initially, I tried with a huge point cloud scene but it was getting difficult to visualize so then I sampled a small subset out of it. The subset is having a valley sort of and hence it was expected to produce steep triangles. All the experimental results are in the attached zip file. The experiments were done for Release <a href="https://github.com/phma/perfecttin/releases/tag/0.3.3" target="_blank">0.3.3</a>, <a href="https://github.com/phma/perfecttin/releases/tag/0.3.6" target="_blank">0.3.6</a> and 0.4.0rc1 (master).</div><div><br></div><div>As mentioned, the spikes are visible in 0.3.3 but it gets pretty smooth and smaller in 0.3.6 and 0.4.0rc1. Please check it. I have also added some screenshots for visual comparison.</div><div><br></div><div>Not sure about the attachment size on the mailing list, so the results can also be accessed <a href="https://drive.google.com/drive/folders/1D9fAAooisQCO5BH_Ir12pyLe84Cqmy0z?usp=sharing" target="_blank">here</a>.</div><div><br></div><div>I hope of not missing out on anything. Please let me know if I did.</div><div>I would love to see Dr Steer's reply; he is really point cloud heavy and I have been following his articles lately. :)</div><div><br></div><div>Kind regards,</div><div>Rajat</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Apr 18, 2020 at 3:37 PM Rajat Shinde <<a href="mailto:rajatshinde2303@gmail.com">rajatshinde2303@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Thanks for the detailed instructions.<div>Initially, I tried with a huge point cloud scene but it was getting difficult to visualize so then I sampled a small subset out of it. The subset is having a valley sort of and hence it was expected to produce steep triangles. All the experimental results are in the attached zip file. The experiments were done for Release <a href="https://github.com/phma/perfecttin/releases/tag/0.3.3" target="_blank">0.3.3</a>, <a href="https://github.com/phma/perfecttin/releases/tag/0.3.6" target="_blank">0.3.6</a> and 0.4.0rc1 (master).</div><div><br></div><div>As mentioned, the spikes are visible in 0.3.3 but it gets pretty smooth and smaller in 0.3.6 and 0.4.0rc1. Please check it. I have also added some screenshots for visual comparison.</div><div><br></div><div>Not sure about the attachment size on the mailing list, so the results can also be accessed <a href="https://drive.google.com/drive/folders/1D9fAAooisQCO5BH_Ir12pyLe84Cqmy0z?usp=sharing" target="_blank">here</a>.</div><div><br></div><div>I hope of not missing out on anything. Please let me know if I did.</div><div>I would love to see Dr Steer's reply; he is really point cloud heavy and I have been following his articles lately. :)</div><div><br></div><div>Kind regards,</div><div>Rajat</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Apr 18, 2020 at 1:57 AM Pierre Abbat <<a href="mailto:phma@bezitopo.org" target="_blank">phma@bezitopo.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Friday, April 17, 2020 2:57:13 PM EDT Rajat Shinde wrote:<br>
> Hi Pierre,<br>
> <br>
> I would be very happy to do it. My PhD thesis involves LiDAR Point Cloud<br>
> processing and these days I am fully covered up with LAS/LAZ files. Though,<br>
> I have not used PerfectTIN till now, but I can see the earlier releases<br>
> available at <a href="https://github.com/OSGeo/perfecttin/releases" rel="noreferrer" target="_blank">https://github.com/OSGeo/perfecttin/releases</a>.<br>
> <br>
> Please suggest me on how to proceed.<br>
<br>
Thanks! Here are the steps:<br>
<br>
Clone the repo (the latest commit should be on 2020-04-07 or later).<br>
<br>
Check out 0.3.3 and run it on some point clouds, looking for some where the <br>
TIN has big spikes (most likely in holes).<br>
<br>
Check out later commits and run them on the same clouds. The spikes should <br>
become smaller in horizontal area (they may be less than a millimeter thick) <br>
and then disappear. Thin spikes may appear in places they weren't before (I've <br>
seen them in falsely rough asphalt that is an artifact of photogrammetric <br>
processing of pine needle shadows), but should disappear by the latest commit.<br>
<br>
Also, would you like to contribute a translation?<br>
<br>
Pierre<br>
-- <br>
gau do li'i co'e kei do<br>
<br>
<br>
<br>
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