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<div dir="ltr">Back to Howard’s question about the deinitition of massive: we’re looking at something north of 15 billion points.</div>
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<div dir="ltr">More as I dive into testing this week.</div>
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<div dir="ltr">Cheers,</div>
<div dir="ltr">Best,</div>
<div dir="ltr">Steve</div>
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<blockquote type="cite">On Jul 2, 2020, at 06:09, Stephen V. Mather <svm@clevelandmetroparks.com> wrote:<br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
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around the edges of where the buildings sit. I tend to buffer the buildings marginally anyway, and the remaining vegetation shows up as an unusually shaped spike that then the morphological filter addresses pretty well. We will see how it fares with CSF.</span></div>
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<span style="font-family:Helvetica,sans-serif"><strong>Stephen V. Mather</strong></span><br style="font-family:Helvetica,sans-serif">
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Luigi Pirelli <luipir@gmail.com><br>
<b>Sent:</b> Thursday, July 2, 2020 2:33 AM<br>
<b>To:</b> Stephen V. Mather <svm@clevelandmetroparks.com><br>
<b>Cc:</b> pdal <pdal@lists.osgeo.org><br>
<b>Subject:</b> Re: [pdal] Digitized building footprints</font>
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<div dir="ltr">hmmmm... did you check difference running MF with or without buildings? due to closing/opening process of the algorithm, the nearest points to building can be affected. In case of building, these points can be vegetations, especially in dry area
with high thermal mass buildings (soil, mud, rock); vegetation grow better near this places where the water stress is reduced [1]<br clear="all">
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<div>Luigi Pirelli</div>
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<div>[1] <a href="https://www.amazon.com/dp/B07SXR66YG/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1">https://www.amazon.com/dp/B07SXR66YG/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1</a><br>
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<div dir="ltr" class="x_gmail_attr">On Mon, 29 Jun 2020 at 19:16, Stephen V. Mather <<a href="mailto:svm@clevelandmetroparks.com">svm@clevelandmetroparks.com</a>> wrote:<br>
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Hi Andrew,</div>
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The goal is to use the digitized footprints to filter the point cloud of the known buildings. With the buildings removed, I plan to then feed this in to SMRF to remove the vegetation points as best as possible. Something similar to this:</div>
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<a href="https://smathermather.com/2016/10/15/finding-peace-finding-the-grounddrone-flights-for-hydrologic-modeling/" id="x_gmail-m_-8406890777777012587LPlnk917258" target="_blank">https://smathermather.com/2016/10/15/finding-peace-finding-the-grounddrone-flights-for-hydrologic-modeling/</a><br>
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Thanks,<br>
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Best,</div>
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Steve<br>
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<span style="font-family:Helvetica,sans-serif"><strong>Stephen V. Mather</strong></span><br style="font-family:Helvetica,sans-serif">
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<div id="x_gmail-m_-8406890777777012587divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Andrew Bell <<a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a>><br>
<b>Sent:</b> Monday, June 29, 2020 12:43 PM<br>
<b>To:</b> Stephen V. Mather <<a href="mailto:svm@clevelandmetroparks.com" target="_blank">svm@clevelandmetroparks.com</a>><br>
<b>Cc:</b> pdal <<a href="mailto:pdal@lists.osgeo.org" target="_blank">pdal@lists.osgeo.org</a>><br>
<b>Subject:</b> Re: [pdal] Digitized building footprints</font>
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<div dir="ltr">On Mon, Jun 29, 2020 at 11:25 AM Stephen V. Mather <<a href="mailto:svm@clevelandmetroparks.com" target="_blank">svm@clevelandmetroparks.com</a>> wrote:<br>
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Hi All,</div>
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I am processing a dataset for which I have a digitized building footprints. It'd be even cooler if I had vegetation, but beggers != choosers.</div>
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In principle, I could use filters.overlay, but this is a massive dataset, so I am curious if it makes more sense to rasterize, tile things up, and use filters.colorization.</div>
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Happy to test and report back on what is fastest, but in case someone has a hunch, or an alternative recommended approach, I thought I would ask.</div>
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<div>It's not clear to me what you're trying to do. Maybe you could state your goal?</div>
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-- <br>
<div dir="ltr">Andrew Bell<br>
<a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a></div>
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