Search Results for author: Gozde Unal

Found 27 papers, 13 papers with code

Calibrating Bayesian UNet++ for Sub-Seasonal Forecasting

no code implementations25 Mar 2024 Busra Asan, Abdullah Akgül, Alper Unal, Melih Kandemir, Gozde Unal

Seasonal forecasting is a crucial task when it comes to detecting the extreme heat and colds that occur due to climate change.

epsilon-Mesh Attack: A Surface-based Adversarial Point Cloud Attack for Facial Expression Recognition

no code implementations11 Mar 2024 Batuhan Cengiz, Mert Gulsen, Yusuf H. Sahin, Gozde Unal

Due to the wide application area of point clouds and the recent advancements in deep neural networks, studies focusing on robust classification of the 3D point cloud data emerged.

Adversarial Attack Facial Expression Recognition +1

PCLD: Point Cloud Layerwise Diffusion for Adversarial Purification

1 code implementation11 Mar 2024 Mert Gulsen, Batuhan Cengiz, Yusuf H. Sahin, Gozde Unal

A typical way to assess a model's robustness is through adversarial attacks, where test-time examples are generated based on gradients to deceive the model.

Autonomous Driving Denoising

EdVAE: Mitigating Codebook Collapse with Evidential Discrete Variational Autoencoders

1 code implementation9 Oct 2023 Gulcin Baykal, Melih Kandemir, Gozde Unal

We evidentially monitor the significance of attaining the probability distribution over the codebook embeddings, in contrast to softmax usage.

ProtoDiffusion: Classifier-Free Diffusion Guidance with Prototype Learning

1 code implementation4 Jul 2023 Gulcin Baykal, Halil Faruk Karagoz, Taha Binhuraib, Gozde Unal

Diffusion models are generative models that have shown significant advantages compared to other generative models in terms of higher generation quality and more stable training.

Textile Pattern Generation Using Diffusion Models

no code implementations2 Apr 2023 Halil Faruk Karagoz, Gulcin Baykal, Irem Arikan Eksi, Gozde Unal

The fine-tuned diffusion model is trained with this newly created dataset, and its results are compared with the baseline models visually and numerically.

Image Generation

GaussianMLR: Learning Implicit Class Significance via Calibrated Multi-Label Ranking

1 code implementation7 Mar 2023 V. Bugra Yesilkaynak, Emine Dari, Alican Mertan, Gozde Unal

We show that our method is able to accurately learn a representation of the incorporated positive rank order, which is not only consistent with the ground truth but also proportional to the underlying information.

Climate Model Driven Seasonal Forecasting Approach with Deep Learning

no code implementations21 Feb 2023 Alper Unal, Busra Asan, Ismail Sezen, Bugra Yesilkaynak, Yusuf Aydin, Mehmet Ilicak, Gozde Unal

Three different setups (CMIP6; CMIP6 + elevation; CMIP6 + elevation + ERA5 finetuning) were used with both UNet and UNet++ algorithms resulting in six different models.

Management

Symmetry and Variance: Generative Parametric Modelling of Historical Brick Wall Patterns

no code implementations23 Oct 2022 Sevgi Altun, Mustafa Cem Gunes, Yusuf H. Sahin, Alican Mertan, Gozde Unal, Mine Ozkar

This study integrates artificial intelligence and computational design tools to extract information from architectural heritage.

How to Combine Variational Bayesian Networks in Federated Learning

1 code implementation22 Jun 2022 Atahan Ozer, Kadir Burak Buldu, Abdullah Akgül, Gozde Unal

Federated Learning enables multiple data centers to train a central model collaboratively without exposing any confidential data.

Federated Learning Image Classification

Continual Learning of Multi-modal Dynamics with External Memory

no code implementations2 Mar 2022 Abdullah Akgül, Gozde Unal, Melih Kandemir

We study the problem of fitting a model to a dynamical environment when new modes of behavior emerge sequentially.

Continual Learning

Uncertainty-Based Dynamic Graph Neighborhoods For Medical Segmentation

1 code implementation6 Aug 2021 Ufuk Demir, Atahan Ozer, Yusuf H. Sahin, Gozde Unal

However, there are two drawbacks of the approach: most of the edges in the graph are assigned randomly and the GCN is trained independently from the segmentation network.

Computed Tomography (CT) Pancreas Segmentation +1

Evidential Turing Processes

2 code implementations ICLR 2022 Melih Kandemir, Abdullah Akgül, Manuel Haussmann, Gozde Unal

A probabilistic classifier with reliable predictive uncertainties i) fits successfully to the target domain data, ii) provides calibrated class probabilities in difficult regions of the target domain (e. g.\ class overlap), and iii) accurately identifies queries coming out of the target domain and rejects them.

Image Classification Uncertainty Quantification

Single Image Depth Estimation: An Overview

no code implementations13 Apr 2021 Alican Mertan, Damien Jade Duff, Gozde Unal

We review solutions to the problem of depth estimation, arguably the most important subtask in scene understanding.

Depth Estimation Scene Understanding +2

ODFNet: Using orientation distribution functions to characterize 3D point clouds

1 code implementation8 Dec 2020 Yusuf H. Sahin, Alican Mertan, Gozde Unal

Learning new representations of 3D point clouds is an active research area in 3D vision, as the order-invariant point cloud structure still presents challenges to the design of neural network architectures.

3D Part Segmentation Scene Segmentation

Exploring DeshuffleGANs in Self-Supervised Generative Adversarial Networks

1 code implementation3 Nov 2020 Gulcin Baykal, Furkan Ozcelik, Gozde Unal

Lastly, we show the contribution of the self-supervision tasks to the GAN training on the loss landscape and present that the effects of these tasks may not be cooperative to the adversarial training in some settings.

Image Generation

Relative Depth Estimation as a Ranking Problem

no code implementations14 Oct 2020 Alican Mertan, Damien Jade Duff, Gozde Unal

To this end, we have introduced a listwise ranking loss borrowed from ranking literature, weighted ListMLE, to the relative depth estimation problem.

Depth Estimation

Rethinking CNN-Based Pansharpening: Guided Colorization of Panchromatic Images via GANs

1 code implementation30 Jun 2020 Furkan Ozcelik, Ugur Alganci, Elif Sertel, Gozde Unal

Convolutional Neural Networks (CNN)-based approaches have shown promising results in pansharpening of satellite images in recent years.

Colorization Pansharpening +2

DeshuffleGAN: A Self-Supervised GAN to Improve Structure Learning

1 code implementation15 Jun 2020 Gulcin Baykal, Gozde Unal

Generative Adversarial Networks (GANs) triggered an increased interest in problem of image generation due to their improved output image quality and versatility for expansion towards new methods.

Image Generation

Medical Imaging with Deep Learning: MIDL 2019 -- Extended Abstract Track

no code implementations21 May 2019 M. Jorge Cardoso, Aasa Feragen, Ben Glocker, Ender Konukoglu, Ipek Oguz, Gozde Unal, Tom Vercauteren

This compendium gathers all the accepted extended abstracts from the Second International Conference on Medical Imaging with Deep Learning (MIDL 2019), held in London, UK, 8-10 July 2019.

BIG-bench Machine Learning

Generative Adversarial Training for MRA Image Synthesis Using Multi-Contrast MRI

no code implementations12 Apr 2018 Sahin Olut, Yusuf Huseyin Sahin, Ugur Demir, Gozde Unal

To that end, we incorporate steerable filter responses of the generated and reference images inside a Huber function loss term.

Anatomy Generative Adversarial Network +1

Patch-Based Image Inpainting with Generative Adversarial Networks

no code implementations20 Mar 2018 Ugur Demir, Gozde Unal

Area of image inpainting over relatively large missing regions recently advanced substantially through adaptation of dedicated deep neural networks.

Generative Adversarial Network Image Inpainting

Deep Stacked Networks with Residual Polishing for Image Inpainting

no code implementations31 Dec 2017 Ugur Demir, Gozde Unal

Then the second network modifies the repaired image to cancel the noise introduced by the first network.

Denoising Image Inpainting

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