Search Results for author: Oren Freifeld

Found 14 papers, 8 papers with code

A Deep Moving-camera Background Model

1 code implementation16 Sep 2022 Guy Erez, Ron Shapira Weber, Oren Freifeld

Moreover, existing MCBMs usually model the background either on the domain of a typically-large panoramic image or in an online fashion.

Change Detection Video Background Subtraction

CPU- and GPU-based Distributed Sampling in Dirichlet Process Mixtures for Large-scale Analysis

2 code implementations19 Apr 2022 Or Dinari, Raz Zamir, John W. Fisher III, Oren Freifeld

While Chang and Fisher III's implementation (written in MATLAB/C++) used only CPU and was designed for a single multi-core machine, the packages we proposed here distribute the computations efficiently across either multiple multi-core machines or across mutiple GPU streams.

DeepDPM: Deep Clustering With an Unknown Number of Clusters

1 code implementation CVPR 2022 Meitar Ronen, Shahaf E. Finder, Oren Freifeld

Using a split/merge framework, a dynamic architecture that adapts to the changing K, and a novel loss, our proposed method outperforms existing nonparametric methods (both classical and deep ones).

Clustering Deep Nonparametric Clustering +3

Sampling in Dirichlet Process Mixture Models for Clustering Streaming Data

2 code implementations27 Feb 2022 Or Dinari, Oren Freifeld

Practical tools for clustering streaming data must be fast enough to handle the arrival rate of the observations.

Clustering

Effective Learning of a GMRF Mixture Model

1 code implementation18 May 2020 Shahaf E. Finder, Eran Treister, Oren Freifeld

However, we show that even for a single Gaussian, when GLASSO is tuned to successfully estimate the sparsity pattern, it does so at the price of a substantial bias of the values of the nonzero entries of the matrix, and we show that this problem only worsens in a mixture setting.

Deep Diffeomorphic Transformer Networks

1 code implementation CVPR 2018 Nicki Skafte Detlefsen, Oren Freifeld, Søren Hauberg

Spatial Transformer layers allow neural networks, at least in principle, to be invariant to large spatial transformations in image data.

Dreaming More Data: Class-dependent Distributions over Diffeomorphisms for Learned Data Augmentation

no code implementations9 Oct 2015 Søren Hauberg, Oren Freifeld, Anders Boesen Lindbo Larsen, John W. Fisher III, Lars Kai Hansen

We then learn a class-specific probabilistic generative models of the transformations in a Riemannian submanifold of the Lie group of diffeomorphisms.

Data Augmentation Feature Engineering

A Mixture of Manhattan Frames: Beyond the Manhattan World

no code implementations CVPR 2014 Julian Straub, Guy Rosman, Oren Freifeld, John J. Leonard, John W. Fisher III

Traditional approaches to scene representation exploit this phenomenon via the somewhat restrictive assumption that every plane is perpendicular to one of the axes of a single coordinate system.

Model Transport: Towards Scalable Transfer Learning on Manifolds

no code implementations CVPR 2014 Oren Freifeld, Soren Hauberg, Michael J. Black

We demonstrate the approach by transferring PCA and logistic-regression models of real-world data involving 3D shapes and image descriptors.

regression Transfer Learning

Aerial Reconstructions via Probabilistic Data Fusion

no code implementations CVPR 2014 Randi Cabezas, Oren Freifeld, Guy Rosman, John W. Fisher III

We propose an integrated probabilistic model for multi-modal fusion of aerial imagery, LiDAR data, and (optional) GPS measurements.

A Geometric take on Metric Learning

no code implementations NeurIPS 2012 Søren Hauberg, Oren Freifeld, Michael J. Black

We then show that this structure gives us a principled way to perform dimensionality reduction and regression according to the learned metrics.

Dimensionality Reduction Metric Learning +1

Cannot find the paper you are looking for? You can Submit a new open access paper.