Search Results for author: Jesper H. Pedersen

Found 6 papers, 1 papers with code

Graph Refinement based Airway Extraction using Mean-Field Networks and Graph Neural Networks

1 code implementation21 Nov 2018 Raghavendra Selvan, Thomas Kipf, Max Welling, Antonio Garcia-Uceda Juarez, Jesper H. Pedersen, Jens Petersen, Marleen de Bruijne

Graph refinement, or the task of obtaining subgraphs of interest from over-complete graphs, can have many varied applications.

Extracting Tree-structures in CT data by Tracking Multiple Statistically Ranked Hypotheses

no code implementations23 Jun 2018 Raghavendra Selvan, Jens Petersen, Jesper H. Pedersen, Marleen de Bruijne

We propose to use statistical ranking of local hypotheses in constructing the MHT tree, which yields a probabilistic interpretation of scores across scales and helps alleviate the scale-dependence of MHT parameters.

Segmentation

Extraction of Airways using Graph Neural Networks

no code implementations12 Apr 2018 Raghavendra Selvan, Thomas Kipf, Max Welling, Jesper H. Pedersen, Jens Petersen, Marleen de Bruijne

We present extraction of tree structures, such as airways, from image data as a graph refinement task.

Decoder

Mean Field Network based Graph Refinement with application to Airway Tree Extraction

no code implementations10 Apr 2018 Raghavendra Selvan, Max Welling, Jesper H. Pedersen, Jens Petersen, Marleen de Bruijne

Performance of the method is compared with two methods: the first uses probability images from a trained voxel classifier with region growing, which is similar to one of the best performing methods at EXACT'09 airway challenge, and the second method is based on Bayesian smoothing on these probability images.

Bayesian Inference

Extraction of Airways with Probabilistic State-space Models and Bayesian Smoothing

no code implementations7 Aug 2017 Raghavendra Selvan, Jens Petersen, Jesper H. Pedersen, Marleen de Bruijne

The evolution of individual branches is modelled using a process model and the observed data is incorporated into the update step of the Bayesian smoother using a measurement model that is based on a multi-scale blob detector.

Extraction of airway trees using multiple hypothesis tracking and template matching

no code implementations24 Nov 2016 Raghavendra Selvan, Jens Petersen, Jesper H. Pedersen, Marleen de Bruijne

The results show improvements in performance when compared to the original method and region growing on intensity images.

Template Matching

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