https://3demmethods.i2pc.es/index.php?action=history&feed=atom&title=2012Zheng_Covariance 2026-06-13T12:18:01Z Revision history for this page on the wiki MediaWiki 1.44.2 https://3demmethods.i2pc.es/index.php?title=2012Zheng_Covariance&diff=3007&oldid=prev 2016-12-21T20:43:09Z

<p>Created page with &quot;== Citation == Zheng, Y.; Wang, Q. &amp; Doerschuk, P. C. Three-dimensional reconstruction of the statistics of heterogeneous objects from a collection of one projection image of...&quot;</p> <p><b>New page</b></p><div>== Citation ==<br /> <br /> Zheng, Y.; Wang, Q. &amp; Doerschuk, P. C. Three-dimensional reconstruction of the statistics of heterogeneous objects from a collection of one projection image of each object. Journal of the Optical Society of America. A, Optics, image science, and vision, 2012, 29, 959-970<br /> <br /> == Abstract ==<br /> <br /> An estimation problem for statistical reconstruction of heterogeneous three-dimensional objects from two-dimensional tomographic data (single-particle cryoelectron microscope images) is posed as the problem of estimating class probabilities, means, and covariances for a Gaussian mixture where both the mean and covariance are stochastically structured. Both discrete (i.e., classes) and continuous heterogeneity is included. A maximum likelihood solution computed by a generalized expectation-maximization algorithm is presented and demonstrated on experimental images of Flock House Virus.<br /> <br /> == Keywords ==<br /> <br /> 3D Heterogeneity<br /> <br /> == Links ==<br /> <br /> https://www.osapublishing.org/vjbo/abstract.cfm?uri=josaa-29-6-959<br /> <br /> == Related software ==<br /> <br /> == Related methods ==<br /> <br /> == Comments ==</div>

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