Search Results for author: Ja-Keoung Koo

Found 4 papers, 1 papers with code

Shape from Projections via Differentiable Forward Projector for Computed Tomography

1 code implementation29 Jun 2020 Ja-Keoung Koo, Anders B. Dahl, J. Andreas Bærentzen, Qiongyang Chen, Sara Bals, Vedrana A. Dahl

In this paper, we propose a differentiable forward model for 3D meshes that bridge the gap between the forward model for 3D surfaces and optimization.

Electron Tomography

Adaptive Regularization of Some Inverse Problems in Image Analysis

no code implementations9 May 2017 Byung-Woo Hong, Ja-Keoung Koo, Martin Burger, Stefano Soatto

We present an adaptive regularization scheme for optimizing composite energy functionals arising in image analysis problems.

Denoising Motion Estimation

Multi-Label Segmentation via Residual-Driven Adaptive Regularization

no code implementations27 Feb 2017 Byung-Woo Hong, Ja-Keoung Koo, Stefano Soatto

We present a variational multi-label segmentation algorithm based on a robust Huber loss for both the data and the regularizer, minimized within a convex optimization framework.

Adaptive Regularization in Convex Composite Optimization for Variational Imaging Problems

no code implementations8 Sep 2016 Byung-Woo Hong, Ja-Keoung Koo, Hendrik Dirks, Martin Burger

The desired properties, robustness and effectiveness, of the regularization parameter selection in a variational framework for imaging problems are achieved by merely replacing the static regularization parameter with our adaptive one.

Denoising Motion Estimation

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