activity
20212026
most citedGeneralist Foundation Models from a Multimodal Dataset for 3D Computed Tomography

44 citations · 66 across the 23 of their papers we have counts for

collaborators

28 papers

cs.CV2026

UnStep: Training-Free Acceleration of Causal Video Diffusion with Fewer Steps Than Distillation

Youssef Mansour, Enis Simsar, Fadime Sener +4

Distilling bidirectional multi-step video diffusion transformers into few-step causal models has become a common approach for streaming video generation. While these few-step stude…

cs.CV2026

Editing Everything Everywhere All at Once

Fabio Quattrini, Carmine Zaccagnino, Enis Simsar +4

Editing multiple elements of an image in a single forward pass is a practical alternative to multi-turn image manipulation, offering improved efficiency and potentially better harm…

cs.LG2026

When One Adapter Speaks for Many: Discovering Low-Rank Redundancy in Continual Fine-Tuning

Tanguy Dieudonné, Giulia Lanzillotta, Enis Simsar +2

Low-Rank Adaptation (LoRA) has become the standard tool for parameter-efficient fine-tuning of large pretrained models. When applied sequentially across tasks in Continual Learning…

cs.LG2026

SeqLoRA: Bilevel Orthogonal Adaptation for Continual Multi-Concept Generation

Javad Parsa, Enis Simsar, Amir Joudaki +2

Parameter-efficient fine-tuning enables fast personalization of text-to-image diffusion models to user-provided concepts (objects, people, or styles), but composing multiple such c…

cs.CV2026

FullFlow: Upgrading Text-to-Image Flow Matching Models for Bidirectional Vision--Language Generation

Eric Tillmann Bill, Enis Simsar, Alessio Tonioni +1

Modern text-to-image diffusion models encode rich visual priors, but expose them only through one-way text-conditioned generation. Existing unified vision--language models derived…

cs.CV2026

Shifting the Breaking Point of Flow Matching for Multi-Instance Editing

Carmine Zaccagnino, Fabio Quattrini, Enis Simsar +4

Flow matching models have recently emerged as an efficient alternative to diffusion, especially for text-guided image generation and editing, offering faster inference through cont…

cs.CV2025

FOCUS: Optimal Control for Multi-Entity World Modeling in Text-to-Image Generation

Eric Tillmann Bill, Enis Simsar, Thomas Hofmann

Text-to-image (T2I) models excel on single-entity prompts but struggle with multi-entity scenes, often exhibiting attribute leakage, identity entanglement, and subject omissions. W…

cs.CV2025

RefAM: Attention Magnets for Zero-Shot Referral Segmentation

Anna Kukleva, Enis Simsar, Alessio Tonioni +4

Most existing approaches to referring segmentation achieve strong performance only through fine-tuning or by composing multiple pre-trained models, often at the cost of additional…

cs.CV2025

JEDI: The Force of Jensen-Shannon Divergence in Disentangling Diffusion Models

Eric Tillmann Bill, Enis Simsar, Thomas Hofmann

We introduce JEDI, a test-time adaptation method that enhances subject separation and compositional alignment in diffusion models without requiring retraining or external supervisi…

cs.CV2025

IC-Portrait: In-Context Matching for View-Consistent Personalized Portrait

Han Yang, Enis Simsar, Sotiris Anagnostidis +3

Existing diffusion models show great potential for identity-preserving generation. However, personalized portrait generation remains challenging due to the diversity in user profil…

cs.CV2025

SHYI: Action Support for Contrastive Learning in High-Fidelity Text-to-Image Generation

Tianxiang Xia, Lin Xiao, Yannick Montorfani +3

In this project, we address the issue of infidelity in text-to-image generation, particularly for actions involving multiple objects. For this we build on top of the CONFORM framew…

cs.CV2024

UIP2P: Unsupervised Instruction-based Image Editing via Edit Reversibility Constraint

Enis Simsar, Alessio Tonioni, Yongqin Xian +2

We propose an unsupervised instruction-based image editing approach that removes the need for ground-truth edited images during training. Existing methods rely on supervised learni…

cs.CV2024

LoRACLR: Contrastive Adaptation for Customization of Diffusion Models

Enis Simsar, Thomas Hofmann, Federico Tombari +1

Recent advances in text-to-image customization have enabled high-fidelity, context-rich generation of personalized images, allowing specific concepts to appear in a variety of scen…

cs.CV2024

MegaPortrait: Revisiting Diffusion Control for High-fidelity Portrait Generation

Han Yang, Sotiris Anagnostidis, Enis Simsar +1

We propose MegaPortrait. It's an innovative system for creating personalized portrait images in computer vision. It has three modules: Identity Net, Shading Net, and Harmonization…

cs.CV2024★ 1 cited

PixLens: A Novel Framework for Disentangled Evaluation in Diffusion-Based Image Editing with Object Detection + SAM

Stefan Stefanache, Lluís Pastor Pérez, Julen Costa Watanabe +3

Evaluating diffusion-based image-editing models is a crucial task in the field of Generative AI. Specifically, it is imperative to assess their capacity to execute diverse editing…

cs.CV2024★ 2 cited

Stylebreeder: Exploring and Democratizing Artistic Styles through Text-to-Image Models

Matthew Zheng, Enis Simsar, Hidir Yesiltepe +3

Text-to-image models are becoming increasingly popular, revolutionizing the landscape of digital art creation by enabling highly detailed and creative visual content generation. Th…

cs.CV2024

Contrastive Test-Time Composition of Multiple LoRA Models for Image Generation

Tuna Han Salih Meral, Enis Simsar, Federico Tombari +1

Low-Rank Adaptation (LoRA) has emerged as a powerful and popular technique for personalization, enabling efficient adaptation of pre-trained image generation models for specific ta…

cs.CV2024★ 44 cited

Generalist Foundation Models from a Multimodal Dataset for 3D Computed Tomography

Ibrahim Ethem Hamamci, Sezgin Er, Chenyu Wang +27

Advancements in medical imaging AI, particularly in 3D imaging, have been limited due to the scarcity of comprehensive datasets. We introduce CT-RATE, a public dataset that pairs 3…

cs.CV2023

CONFORM: Contrast is All You Need For High-Fidelity Text-to-Image Diffusion Models

Tuna Han Salih Meral, Enis Simsar, Federico Tombari +1

Images produced by text-to-image diffusion models might not always faithfully represent the semantic intent of the provided text prompt, where the model might overlook or entirely…

cs.CV2023

LIME: Localized Image Editing via Attention Regularization in Diffusion Models

Enis Simsar, Alessio Tonioni, Yongqin Xian +2

Diffusion models (DMs) have gained prominence due to their ability to generate high-quality varied images with recent advancements in text-to-image generation. The research focus i…

cs.CV2023★ 11 cited

DENTEX: Dental Enumeration and Tooth Pathosis Detection Benchmark for Panoramic X-ray

Ibrahim Ethem Hamamci, Sezgin Er, Omer Faruk Durugol +40

Panoramic X-rays are frequently used in dentistry for treatment planning, but their interpretation can be both time-consuming and prone to error. Artificial intelligence (AI) has t…

cs.CV2023★ 4 cited

GenerateCT: Text-Conditional Generation of 3D Chest CT Volumes

Ibrahim Ethem Hamamci, Sezgin Er, Anjany Sekuboyina +13

GenerateCT, the first approach to generating 3D medical imaging conditioned on free-form medical text prompts, incorporates a text encoder and three key components: a novel causal…

cs.CV2023★ 2 cited

Diffusion-Based Hierarchical Multi-Label Object Detection to Analyze Panoramic Dental X-rays

Ibrahim Ethem Hamamci, Sezgin Er, Enis Simsar +5

Due to the necessity for precise treatment planning, the use of panoramic X-rays to identify different dental diseases has tremendously increased. Although numerous ML models have…

cs.CV2022★ 1 cited

LatentSwap3D: Semantic Edits on 3D Image GANs

Enis Simsar, Alessio Tonioni, Evin Pınar Örnek +1

3D GANs have the ability to generate latent codes for entire 3D volumes rather than only 2D images. These models offer desirable features like high-quality geometry and multi-view…