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In recent advancements in high-fidelity image generation, Denoising Diffusion Probabilistic Models (DDPMs) have emerged as a key player. However, their application at high resolutions presents significant computational challenges. Current…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Jing Nathan Yan , Jiatao Gu , Alexander M. Rush

Large Language Models (LLMs) have become increasingly important in natural language processing, enabling advanced data analytics through natural language queries. However, these models often generate "hallucinations"-inaccurate or…

Computation and Language · Computer Science 2024-10-29 Mikhail Rumiantsau , Aliaksei Vertsel , Ilya Hrytsuk , Isaiah Ballah

Vision-language model (VLM) hallucination is commonly linked to imbalanced allocation of attention across input modalities: system, image and text. However, existing mitigation strategies tend towards an image-centric interpretation of…

Computation and Language · Computer Science 2026-04-27 Tsan Tsai Chan , Varsha Suresh , Anisha Saha , Michael Hahn , Vera Demberg

Multimodal Large Language Models (MLLMs) have emerged as a central focus in both industry and academia, but often suffer from biases introduced by visual and language priors, which can lead to multimodal hallucination. These biases arise…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Guanyu Zhou , Yibo Yan , Xin Zou , Kun Wang , Aiwei Liu , Xuming Hu

With the development of diffusion-based customization methods like DreamBooth, individuals now have access to train the models that can generate their personalized images. Despite the convenience, malicious users have misused these…

Computer Vision and Pattern Recognition · Computer Science 2024-07-29 Yisu Liu , Jinyang An , Wanqian Zhang , Dayan Wu , Jingzi Gu , Zheng Lin , Weiping Wang

Multimodal large language models achieve strong performance across diverse tasks but remain prone to hallucinations, where outputs are not grounded in visual inputs. This issue can be attributed to two main biases: text-visual bias, the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Shan Wang , Maying Shen , Nadine Chang , Chuong Nguyen , Hongdong Li , Jose M. Alvarez

Existing text-to-image diffusion models struggle to synthesize realistic images given dense captions, where each text prompt provides a detailed description for a specific image region. To address this, we propose DenseDiffusion, a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Yunji Kim , Jiyoung Lee , Jin-Hwa Kim , Jung-Woo Ha , Jun-Yan Zhu

Large Vision-Language Models (LVLMs) have achieved substantial progress in cross-modal tasks. However, due to language bias, LVLMs are susceptible to object hallucination, which can be primarily divided into category, attribute, and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Tianbo Wang , Yuqing Ma , Kewei Liao , Zhange Zhang , Simin Li , Jinyang Guo , Xianglong Liu

Hallucinations in vision-language models (VLMs) hinder reliability and real-world applicability, usually stemming from distribution shifts between pretraining data and test samples. Existing solutions, such as retraining or fine-tuning on…

Multimedia · Computer Science 2025-06-10 Fei Zhao , Chengcui Zhang , Runlin Zhang , Tianyang Wang , Xi Li

Recent advancements in multimodal large language models (MLLMs) have significantly improved performance in visual question answering. However, they often suffer from hallucinations. In this work, hallucinations are categorized into two main…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Feilong Tang , Chengzhi Liu , Zhongxing Xu , Ming Hu , Zelin Peng , Zhiwei Yang , Jionglong Su , Minquan Lin , Yifan Peng , Xuelian Cheng , Imran Razzak , Zongyuan Ge

Multimodal Large Language Models (MLLMs) suffer from cross-modal hallucinations, where one modality inappropriately influences generation about another, leading to fabricated output. This exposes a more fundamental deficiency in…

Artificial Intelligence · Computer Science 2026-01-30 Sangyun Chung , Se Yeon Kim , Youngchae Chee , Yong Man Ro

Diffusion models are a powerful class of generative models capable of producing high-quality images from pure noise using a simple text prompt. While most methods which introduce additional spatial constraints into the generated images…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Zakaria Patel , Kirill Serkh

Versatile 3D tasks (e.g., generation or editing) that distill from Text-to-Image (T2I) diffusion models have attracted significant research interest for not relying on extensive 3D training data. However, T2I models exhibit limitations…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Shilong Jin , Haoran Duan , Litao Hua , Wentao Huang , Yuan Zhou

Diffusion models excel at image restoration via probabilistic modeling of forward noise addition and reverse denoising, and their ability to handle complex noise while preserving fine details makes them well-suited for Low-Light Image…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Ying Liu , Junchao Zhang , Caiyun Wu

Artificial intelligence (AI) has transformed imaging inverse problems, from medical diagnostics to Earth observation. Yet deep neural networks can produce hallucinations, realistic-looking but incorrect details, undermining their…

Machine Learning · Statistics 2026-05-14 David Iagaru , Nina M. Gottschling , Anders C. Hansen , Josselin Garnier

Large language models are prone to hallucinating factually incorrect statements. A key source of these errors is exposure to new factual information through supervised fine-tuning (SFT), which can increase hallucinations w.r.t. knowledge…

Computation and Language · Computer Science 2026-04-20 Guy Kaplan , Zorik Gekhman , Zhen Zhu , Lotem Rozner , Yuval Reif , Swabha Swayamdipta , Derek Hoiem , Roy Schwartz

Large vision-language models have become widely adopted to advance in various domains. However, developing a trustworthy system with minimal interpretable characteristics of large-scale models presents a significant challenge. One of the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Huu-Thien Tran , Thanh-Dat Truong , Khoa Luu

This paper primarily focuses on the hallucinations caused due to AI language models(LLMs).LLMs have shown extraordinary Language understanding and generation capabilities .Still it has major a disadvantage hallucinations which give outputs…

Computation and Language · Computer Science 2026-04-07 Sailesh kiran kurra , Shiek Ruksana , Vishal Borusu

Diffusion models have recently achieved great success in the synthesis of high-quality images and videos. However, the existing denoising techniques in diffusion models are commonly based on step-by-step noise predictions, which suffers…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Hancheng Ye , Jiakang Yuan , Renqiu Xia , Xiangchao Yan , Tao Chen , Junchi Yan , Botian Shi , Bo Zhang

Recently, multimodal large language models (MLLMs) have demonstrated remarkable performance in visual-language tasks. However, the authenticity of the responses generated by MLLMs is often compromised by object hallucinations. We identify…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Shuo Li , Jiajun Sun , Guodong Zheng , Xiaoran Fan , Yujiong Shen , Yi Lu , Zhiheng Xi , Yuming Yang , Wenming Tan , Tao Ji , Tao Gui , Qi Zhang , Xuanjing Huang