148 citations · 1.2k across the 75 of their papers we have counts for
8 papers · 1 filter
Non-Local Patch Regression: Robust Image Denoising in Patch Space
Kunal N. Chaudhury, Amit Singer
It was recently demonstrated in [Chaudhury et al.,Non-Local Euclidean Medians,2012] that the denoising performance of Non-Local Means (NLM) can be improved at large noise levels by…
Orientation Determination from Cryo-EM images Using Least Unsquared Deviation
Lanhui Wang, Amit Singer, Zaiwen Wen
A major challenge in single particle reconstruction from cryo-electron microscopy is to establish a reliable ab-initio three-dimensional model using two-dimensional projection imag…
Exact and Stable Recovery of Rotations for Robust Synchronization
Lanhui Wang, Amit Singer
The synchronization problem over the special orthogonal group consists of estimating a set of unknown rotations from noisy measurements of a subset of the…
Fourier-Bessel rotational invariant eigenimages
Zhizhen Zhao, Amit Singer
We present an efficient and accurate algorithm for principal component analysis (PCA) of a large set of two dimensional images, and, for each image, the set of its uniform rotation…
Cramér-Rao bounds for synchronization of rotations
Nicolas Boumal, Amit Singer, P. -A. Absil +1
Synchronization of rotations is the problem of estimating a set of rotations R_i in SO(n), i = 1, ..., N, based on noisy measurements of relative rotations R_i R_j^T. This fundamen…
Non-Local Euclidean Medians
Kunal N. Chaudhury, Amit Singer
In this letter, we note that the denoising performance of Non-Local Means (NLM) at large noise levels can be improved by replacing the mean by the Euclidean median. We call this ne…