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	<title>2026Urzhumtsev ProjDir - Revision history</title>
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	<updated>2026-04-05T08:15:38Z</updated>
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		<title>WikiSysop: Created page with &quot;== Citation ==  Urzhumtsev, A.G. 2026. Quantifying distributions of cryo-EM projections. Biological Crystallography. 82, 2 (2026).  == Abstract ==  In cryo-electron microscopy, a set of two-dimensional projections collected from different viewing directions may complicate image processing and subsequent model building if the distribution of these views is non-uniform. View distributions are traditionally represented as color-coded two-dimensional diagrams. However, such...&quot;</title>
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		<updated>2026-02-17T04:38:34Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;== Citation ==  Urzhumtsev, A.G. 2026. Quantifying distributions of cryo-EM projections. Biological Crystallography. 82, 2 (2026).  == Abstract ==  In cryo-electron microscopy, a set of two-dimensional projections collected from different viewing directions may complicate image processing and subsequent model building if the distribution of these views is non-uniform. View distributions are traditionally represented as color-coded two-dimensional diagrams. However, such...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;== Citation ==&lt;br /&gt;
&lt;br /&gt;
Urzhumtsev, A.G. 2026. Quantifying distributions of cryo-EM projections. Biological Crystallography. 82, 2 (2026).&lt;br /&gt;
&lt;br /&gt;
== Abstract ==&lt;br /&gt;
&lt;br /&gt;
In cryo-electron microscopy, a set of two-dimensional projections collected from&lt;br /&gt;
different viewing directions may complicate image processing and subsequent&lt;br /&gt;
model building if the distribution of these views is non-uniform. View distributions&lt;br /&gt;
are traditionally represented as color-coded two-dimensional diagrams.&lt;br /&gt;
However, such diagrams can introduce distortions and are cumbersome to&lt;br /&gt;
manipulate, store and compare across data sets; they do not provide a commonly&lt;br /&gt;
accepted quantitative measure of uniformity. In this work, we propose a method&lt;br /&gt;
to characterize these angular distributions quantitatively and to represent them&lt;br /&gt;
as simple one-dimensional curves rather than two-dimensional colored&lt;br /&gt;
diagrams. The suggested measures could be incorporated into databases such as&lt;br /&gt;
EMDB to provide a compact, standardized description of the angular distribution&lt;br /&gt;
of particle views.&lt;br /&gt;
&lt;br /&gt;
== Keywords ==&lt;br /&gt;
&lt;br /&gt;
== Links ==&lt;br /&gt;
&lt;br /&gt;
https://journals.iucr.org/paper?vo5021&lt;br /&gt;
&lt;br /&gt;
== Related software ==&lt;br /&gt;
&lt;br /&gt;
== Related methods ==&lt;br /&gt;
&lt;br /&gt;
== Comments ==&lt;/div&gt;</summary>
		<author><name>WikiSysop</name></author>
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