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Large Vision-Language Models (LVLMs) demonstrate remarkable capabilities in multimodal tasks, but visual object hallucination remains a persistent issue. It refers to scenarios where models generate inaccurate visual object-related…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Liqiang Jing , Guiming Hardy Chen , Ehsan Aghazadeh , Xin Eric Wang , Xinya Du

Previous approaches for blind image super-resolution (SR) have relied on degradation estimation to restore high-resolution (HR) images from their low-resolution (LR) counterparts. However, accurate degradation estimation poses significant…

Image and Video Processing · Electrical Eng. & Systems 2024-03-13 Haochen Sun , Yan Yuan , Lijuan Su , Haotian Shao

Multimodal large reasoning models (MLRMs) often suffer from hallucinations that stem not only from insufficient visual grounding but also from imbalanced allocation between perception and reasoning processes. Building upon recent…

Artificial Intelligence · Computer Science 2026-03-10 Haolang Lu , Bolun Chu , WeiYe Fu , Guoshun Nan , Junning Liu , Minghui Pan , Qiankun Li , Yi Yu , Hua Wang , Kun Wang

Large-scale vision-language pre-trained (VLP) models are prone to hallucinate non-existent visual objects when generating text based on visual information. In this paper, we systematically study the object hallucination problem from three…

Computation and Language · Computer Science 2023-02-13 Wenliang Dai , Zihan Liu , Ziwei Ji , Dan Su , Pascale Fung

For video super-resolution, current state-of-the-art approaches either process multiple low-resolution (LR) frames to produce each output high-resolution (HR) frame separately in a sliding window fashion or recurrently exploit the…

Computer Vision and Pattern Recognition · Computer Science 2019-10-01 Bo Yan , Chuming Lin , Weimin Tan

Large Language Models (LLMs) excel in language comprehension and generation but are prone to hallucinations, producing factually incorrect or unsupported outputs. Retrieval Augmented Generation (RAG) systems address this issue by grounding…

Information Retrieval · Computer Science 2025-04-09 Chandana Sree Mala , Gizem Gezici , Fosca Giannotti

Advances in face rotation, along with other face-based generative tasks, are more frequent as we advance further in topics of deep learning. Even as impressive milestones are achieved in synthesizing faces, the importance of preserving…

Computer Vision and Pattern Recognition · Computer Science 2020-12-09 Yu Yin , Joseph P. Robinson , Songyao Jiang , Yue Bai , Can Qin , Yun Fu

We propose a novel end-to-end semi-supervised adversarial framework to generate photorealistic face images of new identities with wide ranges of expressions, poses, and illuminations conditioned by a 3D morphable model. Previous adversarial…

Computer Vision and Pattern Recognition · Computer Science 2020-09-09 Baris Gecer , Binod Bhattarai , Josef Kittler , Tae-Kyun Kim

Despite generative adversarial networks (GANs) can hallucinate photo-realistic high-resolution (HR) faces from low-resolution (LR) faces, they cannot guarantee preserving the identities of hallucinated HR faces, making the HR faces poorly…

Computer Vision and Pattern Recognition · Computer Science 2019-10-02 Chih-Chung Hsu , Chia-Wen Lin , Weng-Tai Su , Gene Cheung

The light stage has been widely used in computer graphics for the past two decades, primarily to enable the relighting of human faces. By capturing the appearance of the human subject under different light sources, one obtains the light…

Landmark detection algorithms trained on high resolution images perform poorly on datasets containing low resolution images. This deters the performance of algorithms relying on quality landmarks, for example, face recognition. To the best…

Computer Vision and Pattern Recognition · Computer Science 2019-08-01 Amit Kumar , Rama Chellappa

Vision-language models (VLMs) raise growing concerns about privacy, copyright, and bias, motivating machine unlearning to remove sensitive knowledge. However, existing methods primarily fine-tune the language decoder, leading to superficial…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Kaidi Jia , Yujie Lin , Chengyi Yang , Jiayao Ma , Jinsong Su

Holographic Reduced Representations (HRR) are a method for performing symbolic AI on top of real-valued vectors by associating each vector with an abstract concept, and providing mathematical operations to manipulate vectors as if they were…

Artificial Intelligence · Computer Science 2021-12-30 Ashwinkumar Ganesan , Hang Gao , Sunil Gandhi , Edward Raff , Tim Oates , James Holt , Mark McLean

Very low-resolution face recognition (VLRFR) poses unique challenges, such as tiny regions of interest and poor resolution due to extreme standoff distance or wide viewing angle of the acquisition devices. In this paper, we study principled…

Computer Vision and Pattern Recognition · Computer Science 2023-04-21 Jacky Chen Long Chai , Tiong-Sik Ng , Cheng-Yaw Low , Jaewoo Park , Andrew Beng Jin Teoh

Recently, machine learning based single image super resolution (SR) approaches focus on jointly learning representations for high-resolution (HR) and low-resolution (LR) image patch pairs to improve the quality of the super-resolved images.…

Computer Vision and Pattern Recognition · Computer Science 2016-07-26 Yukai Shi , Keze Wang , Li Xu , Liang Lin

We propose a two-stage method for face hallucination. First, we generate facial components of the input image using CNNs. These components represent the basic facial structures. Second, we synthesize fine-grained facial structures from high…

Computer Vision and Pattern Recognition · Computer Science 2017-08-09 Yibing Song , Jiawei Zhang , Shengfeng He , Linchao Bao , Qingxiong Yang

Language models trained on large-scale datasets have been shown to learn features that encode abstract concepts such as factuality or intent. Such features are traditionally used for test-time monitoring or steering. We present an…

Machine Learning · Computer Science 2026-02-19 Aaditya Vikram Prasad , Connor Watts , Jack Merullo , Dhruvil Gala , Owen Lewis , Thomas McGrath , Ekdeep Singh Lubana

Heterogeneous face recognition (HFR) refers to matching face images acquired from different domains with wide applications in security scenarios. This paper presents a deep neural network approach namely Multi-Margin based Decorrelation…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Bing Cao , Nannan Wang , Xinbo Gao , Jie Li , Zhifeng Li

Image resolution, or in general, image quality, plays an essential role in the performance of today's face recognition systems. To address this problem, we propose a novel combination of the popular triplet loss to improve robustness…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Martin Knoche , Mohamed Elkadeem , Stefan Hörmann , Gerhard Rigoll

Cross-resolution face recognition (CRFR), which is important in intelligent surveillance and biometric forensics, refers to the problem of matching a low-resolution (LR) probe face image against high-resolution (HR) gallery face images.…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Guangwei Gao , Yi Yu , Jian Yang , Guo-Jun Qi , Meng Yang