Search Results for author: Ayelet Heimowitz

Found 4 papers, 1 papers with code

Image Segmentation via Probabilistic Graph Matching

no code implementations13 May 2023 Ayelet Heimowitz, Yosi Keller

This work presents an unsupervised and semi-automatic image segmentation approach where we formulate the segmentation as a inference problem based on unary and pairwise assignment probabilities computed using low-level image cues.

Graph Matching Image Segmentation +3

Bias and variance reduction and denoising for CTF Estimation

no code implementations9 Aug 2019 Ayelet Heimowitz, Joakim andén, Amit Singer

Our method is based on the multi-taper method for power spectral density estimation, which aims to reduce the bias and variance of the estimator.

Denoising Density Estimation

Semi-supervised Learning in Network-Structured Data via Total Variation Minimization

no code implementations28 Jan 2019 Alexander Jung, Alfred O. Hero III, Alexandru Mara, Saeed Jahromi, Ayelet Heimowitz, Yonina C. Eldar

This lends naturally to learning the labels by total variation (TV) minimization, which we solve by applying a recently proposed primal-dual method for non-smooth convex optimization.

Clustering

APPLE Picker: Automatic Particle Picking, a Low-Effort Cryo-EM Framework

1 code implementation1 Feb 2018 Ayelet Heimowitz, Joakim andén, Amit Singer

Selecting particles from the micrographs is difficult especially for small particles with low contrast.

Template Matching

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