Search Results for author: Firat Ozdemir

Found 10 papers, 5 papers with code

Retrospective Uncertainties for Deep Models using Vine Copulas

1 code implementation24 Feb 2023 Nataša Tagasovska, Firat Ozdemir, Axel Brando

Despite the major progress of deep models as learning machines, uncertainty estimation remains a major challenge.

regression

OADAT: Experimental and Synthetic Clinical Optoacoustic Data for Standardized Image Processing

1 code implementation17 Jun 2022 Firat Ozdemir, Berkan Lafci, Xosé Luís Deán-Ben, Daniel Razansky, Fernando Perez-Cruz

However, no standardized datasets generated with different types of experimental set-up and associated processing methods are available to facilitate advances in broader applications of OA in clinical settings.

Image Reconstruction Image-to-Image Translation +1

Learning Summary Statistics for Bayesian Inference with Autoencoders

1 code implementation28 Jan 2022 Carlo Albert, Simone Ulzega, Firat Ozdemir, Fernando Perez-Cruz, Antonietta Mira

For stochastic models with intractable likelihood functions, approximate Bayesian computation offers a way of approximating the true posterior through repeated comparisons of observations with simulated model outputs in terms of a small set of summary statistics.

Bayesian Inference Decoder

Probabilistic modeling of lake surface water temperature using a Bayesian spatio-temporal graph convolutional neural network

1 code implementation27 Sep 2021 Michael Stalder, Firat Ozdemir, Artur Safin, Jonas Sukys, Damien Bouffard, Fernando Perez-Cruz

Nowadays physical models are developed to estimate lake dynamics; however, computations needed for accurate estimation of lake surface temperature can get prohibitively expensive.

Delineating Bone Surfaces in B-Mode Images Constrained by Physics of Ultrasound Propagation

no code implementations7 Jan 2020 Firat Ozdemir, Christine Tanner, Orcun Goksel

Bone surface delineation in ultrasound is of interest due to its potential in diagnosis, surgical planning, and post-operative follow-up in orthopedics, as well as the potential of using bones as anatomical landmarks in surgical navigation.

Active Learning for Segmentation Based on Bayesian Sample Queries

no code implementations22 Dec 2019 Firat Ozdemir, Zixuan Peng, Philipp Fuernstahl, Christine Tanner, Orcun Goksel

In an active learning framework of selecting informed samples for manual labeling, expert clinician time for manual annotation can be optimally utilized, enabling the establishment of large labeled datasets for machine learning.

Active Learning Segmentation

Extending Pretrained Segmentation Networks with Additional Anatomical Structures

1 code implementation12 Nov 2018 Firat Ozdemir, Orcun Goksel

We propose a class-incremental segmentation framework for extending a deep network trained for some anatomical structure to yet another structure using a small incremental annotation set.

Class Incremental Learning Incremental Learning +1

Generative Adversarial Networks for MR-CT Deformable Image Registration

no code implementations19 Jul 2018 Christine Tanner, Firat Ozdemir, Romy Profanter, Valeriy Vishnevsky, Ender Konukoglu, Orcun Goksel

Performance for the abdominal region was similar to that of CT-MRI NMI registration (77. 4 vs. 78. 8%) when using 3D synthesizing MRIs (12 slices) and medium sized receptive fields for the discriminator.

Image Generation Image Registration

Active Learning for Segmentation by Optimizing Content Information for Maximal Entropy

no code implementations18 Jul 2018 Firat Ozdemir, Zixuan Peng, Christine Tanner, Philipp Fuernstahl, Orcun Goksel

Segmentation is essential for medical image analysis tasks such as intervention planning, therapy guidance, diagnosis, treatment decisions.

Active Learning Segmentation

Learn the new, keep the old: Extending pretrained models with new anatomy and images

no code implementations1 Jun 2018 Firat Ozdemir, Philipp Fuernstahl, Orcun Goksel

Deep learning has been widely accepted as a promising solution for medical image segmentation, given a sufficiently large representative dataset of images with corresponding annotations.

Anatomy Image Segmentation +4

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