<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Acces point cloud]]></title><description><![CDATA[<p dir="auto">Hello everyone!</p>
<p dir="auto">I have a simple question, how can you acces the point cloud of the camera? Or is points_3d the point cloud?</p>
<p dir="auto">I have been experimenting with both the Tau Lidar camera and an external library called open3d, which is used to visualize point clouds. I tried to use points_3d to visualize the point cloud by converting it into a .ply file, but noticed the point cloud wasn't as accurate as i had hoped it to be.</p>
<p dir="auto">Here are some examples as to what I mean:</p>
<p dir="auto"><a href="https://imgur.com/a/5yfgAZp" rel="nofollow">https://imgur.com/a/5yfgAZp</a><br />
A screenshot from what the camera sees (wooden block):<br />
<img src="/assets/uploads/files/1636976214425-1-zurgt6c.png" alt="1 - ZurgT6c.png" class="img-responsive img-markdown" /></p>
<p dir="auto">A screenshot from what the point cloud sees (wooden block):<br />
<img src="/assets/uploads/files/1636976241068-2-phnhvqd.png" alt="2 - pHnHVqd.png" class="img-responsive img-markdown" /></p>
<p dir="auto">A screenshot from what the camera sees (stairs):<br />
<img src="/assets/uploads/files/1636976276794-3-fkxnwco.png" alt="3 - fkXNwCo.png" class="img-responsive img-markdown" /></p>
<p dir="auto">A screenshot from what the point cloud sees (stairs):<br />
<img src="/assets/uploads/files/1636976297943-4-jukf5zi.png" alt="4 - JukF5zi.png" class="img-responsive img-markdown" /></p>
<p dir="auto">This is something similiar to what I expect/desire, an accurate point cloud based of what the camera sees:<br />
<img src="/assets/uploads/files/1636976364540-5-ndji8wf.png" alt="5 - nDJI8Wf.png" class="img-responsive img-markdown" /></p>
<p dir="auto">What is the correct way of getting the point cloud from the camera? Or is the points_3d list indeed the point cloud, but is it not getting an accurate result due to, for example, an incorrect integration time?</p>
<p dir="auto">Thanks in advance for any help! I would love to hear what I am doing wrong or how I could get my wanted result. I would even be grateful for an explenation of how to actually get the point cloud. Thanks!</p>
]]></description><link>http://community.onion.io/topic/4604/acces-point-cloud</link><generator>RSS for Node</generator><lastBuildDate>Wed, 11 Mar 2026 06:30:24 GMT</lastBuildDate><atom:link href="http://community.onion.io/topic/4604.rss" rel="self" type="application/rss+xml"/><pubDate>Mon, 15 Nov 2021 11:41:54 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to Acces point cloud on Mon, 15 Nov 2021 11:41:54 GMT]]></title><description><![CDATA[<p dir="auto">Hello everyone!</p>
<p dir="auto">I have a simple question, how can you acces the point cloud of the camera? Or is points_3d the point cloud?</p>
<p dir="auto">I have been experimenting with both the Tau Lidar camera and an external library called open3d, which is used to visualize point clouds. I tried to use points_3d to visualize the point cloud by converting it into a .ply file, but noticed the point cloud wasn't as accurate as i had hoped it to be.</p>
<p dir="auto">Here are some examples as to what I mean:</p>
<p dir="auto"><a href="https://imgur.com/a/5yfgAZp" rel="nofollow">https://imgur.com/a/5yfgAZp</a><br />
A screenshot from what the camera sees (wooden block):<br />
<img src="/assets/uploads/files/1636976214425-1-zurgt6c.png" alt="1 - ZurgT6c.png" class="img-responsive img-markdown" /></p>
<p dir="auto">A screenshot from what the point cloud sees (wooden block):<br />
<img src="/assets/uploads/files/1636976241068-2-phnhvqd.png" alt="2 - pHnHVqd.png" class="img-responsive img-markdown" /></p>
<p dir="auto">A screenshot from what the camera sees (stairs):<br />
<img src="/assets/uploads/files/1636976276794-3-fkxnwco.png" alt="3 - fkXNwCo.png" class="img-responsive img-markdown" /></p>
<p dir="auto">A screenshot from what the point cloud sees (stairs):<br />
<img src="/assets/uploads/files/1636976297943-4-jukf5zi.png" alt="4 - JukF5zi.png" class="img-responsive img-markdown" /></p>
<p dir="auto">This is something similiar to what I expect/desire, an accurate point cloud based of what the camera sees:<br />
<img src="/assets/uploads/files/1636976364540-5-ndji8wf.png" alt="5 - nDJI8Wf.png" class="img-responsive img-markdown" /></p>
<p dir="auto">What is the correct way of getting the point cloud from the camera? Or is the points_3d list indeed the point cloud, but is it not getting an accurate result due to, for example, an incorrect integration time?</p>
<p dir="auto">Thanks in advance for any help! I would love to hear what I am doing wrong or how I could get my wanted result. I would even be grateful for an explenation of how to actually get the point cloud. Thanks!</p>
]]></description><link>http://community.onion.io/post/24114</link><guid isPermaLink="true">http://community.onion.io/post/24114</guid><dc:creator><![CDATA[JackHulspas]]></dc:creator><pubDate>Mon, 15 Nov 2021 11:41:54 GMT</pubDate></item><item><title><![CDATA[Reply to Acces point cloud on Tue, 01 Feb 2022 20:51:26 GMT]]></title><description><![CDATA[<p dir="auto">Hi <a class="plugin-mentions-user plugin-mentions-a" href="http://community.onion.io/uid/8008">@JackHulspas</a><br />
Have you tried comparing your open3d point cloud visualizations to the point cloud in the Tau Studio web app?<br />
(See step 1 in the <a href="https://api.onioniot.com/util/url/tau-get-started" rel="nofollow">Tau Camera Getting Started Guide</a> for more info on the Tau Studio web app)</p>
<p dir="auto">It's possible the open3d library is expecting the data to be ordered differently.</p>
<p dir="auto">I would suggest taking a look at the Tau Camera Python API reference: <a href="https://taulidarcamera.readthedocs.io/en/latest/" rel="nofollow">https://taulidarcamera.readthedocs.io/en/latest/</a></p>
]]></description><link>http://community.onion.io/post/24255</link><guid isPermaLink="true">http://community.onion.io/post/24255</guid><dc:creator><![CDATA[Lazar Demin]]></dc:creator><pubDate>Tue, 01 Feb 2022 20:51:26 GMT</pubDate></item></channel></rss>