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We present an approach for improving spatial frequency sampling in active incoherent millimeter-wave (AIM) imaging systems using frequency diversity. AIM imaging relies on active transmission of spatio-temporally incoherent signals to…

Signal Processing · Electrical Eng. & Systems 2025-03-12 Jorge R. Colon-Berrios , Jeffrey A. Nanzer

Recent work on latent diffusion models (LDMs) has focused almost exclusively on generative tasks, leaving their potential for discriminative transfer largely unexplored. We introduce Discriminative Vicinity Diffusion (DVD), a novel…

Machine Learning · Computer Science 2025-11-13 Jing Wang , Wonho Bae , Jiahong Chen , Wenxu Wang , Junhyug Noh

Light field (LF) cameras can record scenes from multiple perspectives, and thus introduce beneficial angular information for image super-resolution (SR). However, it is challenging to incorporate angular information due to disparities among…

Image and Video Processing · Electrical Eng. & Systems 2020-12-30 Yingqian Wang , Jungang Yang , Longguang Wang , Xinyi Ying , Tianhao Wu , Wei An , Yulan Guo

We present a low-rank transformation approach to compensate for face variations due to changes in visual domains, such as pose and illumination. The key idea is to learn discriminative linear transformations for face images using matrix…

Computer Vision and Pattern Recognition · Computer Science 2013-08-02 Qiang Qiu , Guillermo Sapiro , Ching-Hui Chen

Low-dose computed tomography (LDCT) reduces radiation exposure but suffers from image artifacts and loss of detail due to quantum and electronic noise, potentially impacting diagnostic accuracy. Transformer combined with diffusion models…

Image and Video Processing · Electrical Eng. & Systems 2025-07-01 Qiqing Liu , Guoquan Wei , Zekun Zhou , Yiyang Wen , Liu Shi , Qiegen Liu

This paper presents a novel unsupervised domain adaptation framework, called Synergistic Image and Feature Adaptation (SIFA), to effectively tackle the problem of domain shift. Domain adaptation has become an important and hot topic in…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Cheng Chen , Qi Dou , Hao Chen , Jing Qin , Pheng-Ann Heng

We introduce the Latent Fourier Transform (LatentFT), a framework that provides novel frequency-domain controls for generative music models. LatentFT combines a diffusion autoencoder with a latent-space Fourier transform to separate musical…

Sound · Computer Science 2026-04-21 Mason Wang , Cheng-Zhi Anna Huang

We address the problem of exposure correction of dark, blurry and noisy images captured in low-light conditions in the wild. Classical image-denoising filters work well in the frequency space but are constrained by several factors such as…

Image and Video Processing · Electrical Eng. & Systems 2021-05-24 Ojasvi Yadav , Koustav Ghosal , Sebastian Lutz , Aljosa Smolic

There has been an increasing consensus in learning based face anti-spoofing that the divergence in terms of camera models is causing a large domain gap in real application scenarios. We describe a framework that eliminates the influence of…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Baoliang Chen , Wenhan Yang , Haoliang Li , Shiqi Wang , Sam Kwong

AI-enhanced segmentation of neuronal boundaries in electron microscopy (EM) images is crucial for automatic and accurate neuroinformatics studies. To enhance the limited generalization ability of typical deep learning frameworks for medical…

Computer Vision and Pattern Recognition · Computer Science 2023-05-05 Yuxiang An , Dongnan Liu , Weidong Cai

Low-resolution image representation is a special form of sparse representation that retains only low-frequency information while discarding high-frequency components. This property reduces storage and transmission costs and benefits various…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Chenglong Bao , Tongyao Pang , Zuowei Shen , Dihan Zheng , Yihang Zou

Unsupervised feature learning has shown impressive results for a wide range of input modalities, in particular for object classification tasks in computer vision. Using a large amount of unlabeled data, unsupervised feature learning methods…

Computer Vision and Pattern Recognition · Computer Science 2013-04-26 Christian Osendorfer , Justin Bayer , Sebastian Urban , Patrick van der Smagt

Lensless cameras replace bulky optics with thin modulation masks, enabling compact imaging systems. However, existing methods rely on an idealized model that assumes a globally shift-invariant point spread function (PSF) and sufficiently…

Image and Video Processing · Electrical Eng. & Systems 2025-12-02 Yu Ren , Xiaoling Zhang , Xu Zhan , Xiangdong Ma , Yunqi Wang , Edmund Y. Lam , Tianjiao Zeng

We introduce a new approach to prediction in graphical models with latent-shift adaptation, i.e., where source and target environments differ in the distribution of an unobserved confounding latent variable. Previous work has shown that as…

Machine Learning · Statistics 2023-06-26 William I. Walker , Arthur Gretton , Maneesh Sahani

Existing video recognition algorithms always conduct different training pipelines for inputs with different frame numbers, which requires repetitive training operations and multiplying storage costs. If we evaluate the model using other…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Yitian Zhang , Yue Bai , Chang Liu , Huan Wang , Sheng Li , Yun Fu

We propose a novel transformer-style architecture called Global-Local Filter Network (GLFNet) for medical image segmentation and demonstrate its state-of-the-art performance. We replace the self-attention mechanism with a combination of…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Athanasios Tragakis , Qianying Liu , Chaitanya Kaul , Swalpa Kumar Roy , Hang Dai , Fani Deligianni , Roderick Murray-Smith , Daniele Faccio

Generative techniques for image anonymization have great potential to generate datasets that protect the privacy of those depicted in the images, while achieving high data fidelity and utility. Existing methods have focused extensively on…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Luca Piano , Pietro Basci , Fabrizio Lamberti , Lia Morra

Low-light image enhancement (LLIE) aims to improve illumination while preserving high-quality color and texture. However, existing methods often fail to extract reliable feature representations due to severely degraded pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2025-10-17 Xu Wu , Zhihui Lai , Xianxu Hou , Jie Zhou , Ya-nan Zhang , Linlin Shen

Current medical image segmentation approaches have limitations in deeply exploring multi-scale information and effectively combining local detail textures with global contextual semantic information. This results in over-segmentation,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Zhenkun Lu , Chaoyin She , Wei Wang , Qinghua Huang

Feature detectors and descriptors are key low-level vision tools that many higher-level tasks build on. Unfortunately these fail in the presence of challenging light transport effects including partial occlusion, low contrast, and…

Computer Vision and Pattern Recognition · Computer Science 2019-01-15 Donald G. Dansereau , Bernd Girod , Gordon Wetzstein