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Konstantinos Kallidromitis

8 accepted papers

2026

Learning to Grasp Anything By Playing with Random Toys

ICLR 2026poster

Robotic manipulation policies often struggle to generalize to novel objects, limiting their real-world utility. In contrast, cognitive science suggests that children develop generalizable dexterous manipulation skills by mastering a small set of simple toys and then applying that knowledge to more c…

Cited by 0SourceScholar
2025

LaViDa: A Large Diffusion Model for Vision-Language Understanding

NeurIPS 2025spotlight

Modern Vision-Language Models (VLMs) can solve a wide range of tasks requiring visual reasoning. In real-world scenarios, desirable properties for VLMs include fast inference and controllable generation (e.g., constraining outputs to adhere to a desired format). However, existing autoregressive (AR)…

Cited by 0SourcecodeScholar
2025

OmniFlow: Any-to-Any Generation with Multi-Modal Rectified Flows

CVPR 2025poster

We introduce OminiFlow, a novel generative model designed for any-to-any generation tasks such as text-to-image, text-to-audio, and audio-to-image synthesis. OminiFlow advances the rectified flow (RF) framework used in text-to-image models to handle the joint distribution of multiple modalities. It…

2025

Reflect-DiT: Inference-Time Scaling for Text-to-Image Diffusion Transformers via In-Context Reflection

ICCV 2025poster

The predominant approach to advancing text-to-image generation has been training-time scaling, where larger models are trained on more data using greater computational resources. While effective, this approach is computationally expensive, leading to growing interest in inference-time scaling to imp…

2025

SegLLM: Multi-round Reasoning Segmentation with Large Language Models

ICLR 2025poster

We present SegLLM, a novel multi-round interactive reasoning segmentation model that enhances LLM-based segmentation by exploiting conversational memory of both visual and textual outputs. By leveraging a mask-aware multimodal LLM, SegLLM re-integrates previous segmentation results into its input st…

Cited by 0SourcePDFScholar
2024

Aligning Diffusion Models by Optimizing Human Utility

NeurIPS 2024poster

We present Diffusion-KTO, a novel approach for aligning text-to-image diffusion models by formulating the alignment objective as the maximization of expected human utility. Unlike previous methods, Diffusion-KTO does not require collecting pairwise preference data nor training a complex reward model…

2024

Hyperbolic Active Learning for Semantic Segmentation under Domain Shift

ICML 2024poster

We introduce a hyperbolic neural network approach to pixel-level active learning for semantic segmentation. Analysis of the data statistics leads to a novel interpretation of the hyperbolic radius as an indicator of data scarcity. In HALO (Hyperbolic Active Learning Optimization), for the first time…

2023

Hierarchical Open-vocabulary Universal Image Segmentation

NeurIPS 2023poster

Open-vocabulary image segmentation aims to partition an image into semantic regions according to arbitrary text descriptions. However, complex visual scenes can be naturally decomposed into simpler parts and abstracted at multiple lev4 els of granularity, introducing inherent segmentation ambiguity.…