<div dir="ltr">Hi Everyone,<div><br></div><div>while the tools already suggested provide a great solution for regular geometric bodies, distortion-free surface unwrapping can be more challenging for irregular shapes. <a href="https://github.com/dtegunov/membranorama">Membranorama</a> offers a range of tools to help with that, projects the density information (or its integral along the surface normals) in 2D or 3D, and lets you pick and visualize objects adjacent to the surface.</div><div><br></div><div>Cheers,</div><div>Dimitry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 13, 2019 at 12:05 PM Steinar Halldorsson <<a href="mailto:steinar.halldorsson@crick.ac.uk">steinar.halldorsson@crick.ac.uk</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">




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Hi all</div>
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Thanks for all the suggestions! Looks like the problem has been solved a few times.</div>
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Cheers,</div>
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Steinar</div>
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<div id="gmail-m_2443115656852045760divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Daniel Castano Diez <<a href="mailto:daniel.castano@unibas.ch" target="_blank">daniel.castano@unibas.ch</a>><br>
<b>Sent:</b> 12 February 2019 18:46<br>
<b>To:</b> Steinar Halldorsson<br>
<b>Cc:</b> <a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a><br>
<b>Subject:</b> Re: [3dem] Surface projection maps.</font>
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<div>Hi Steinar,</div>
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<div>For small volumes you can use the Dynamo command "dcoordinates", I wrote a small walkthrough for this:</div>
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<a href="https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.dynamo.biozentrum.unibas.ch%2Fw%2Findex.php%2FExample_of_use_of_dcoordinates&data=02%7C01%7C%7Cf2ffca3c206f435b20df08d6911a7764%7C4eed7807ebad415aa7a99170947f4eae%7C0%7C0%7C636855940202674714&sdata=eCesWdEa%2F9opCvv%2FZZz6u9iLDuFrn87Ns0X%2BmuYCs7o%3D&reserved=0" target="_blank">https://wiki.dynamo.biozentrum.unibas.ch/w/index.php/Example_of_use_of_dcoordinates</a>
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<div>Hope it helps,</div>
<div>Daniel<br>
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<div>On 12 Feb 2019, at 17:41, Steinar Halldorsson <<a href="mailto:steinar.halldorsson@crick.ac.uk" target="_blank">steinar.halldorsson@crick.ac.uk</a>> wrote:</div>
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Hi all</div>
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I would like to do something which I'm hoping that someone else has done before, or at least something similar and might have a solution to share.</div>
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I have some raw tomograms of spherical-ish viral particles and I would like to create a flattened (projected) 2D image of the surface of a single virion. I'm thinking that it would be sort of like making a world map using the Mercator projection, i.e. projecting
 a sphere onto a cylinder and "rolling out" the cylinder. Ideally there would be a way to average several pixels in each direction to enhance the contrast in the tomogram.</div>
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Has anyone seen something like this done in a publication or has even done something like this themselves?</div>
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Best wishes,</div>
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Steinar</div>
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