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Digital Retinal Fundus Images helps to detect various ophthalmic diseases by detecting morphological changes in optical cup, optical disc and macula. Present work proposes a method for the authentication of medical images based on Discrete…

Computer Vision and Pattern Recognition · Computer Science 2012-09-04 Nilanjan Dey , Moumita Pal , Achintya Das

Recovering the physical attributes of an object's appearance from its images captured under an unknown illumination is challenging yet essential for photo-realistic rendering. Recent approaches adopt the emerging implicit scene…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Youjia Zhang , Teng Xu , Junqing Yu , Yuteng Ye , Junle Wang , Yanqing Jing , Jingyi Yu , Wei Yang

Unsupervised anomaly detection (UAD) in brain imaging is crucial for identifying pathologies without the need for labeled data. However, accurately localizing anomalies remains challenging due to the intricate structure of brain anatomy and…

Image and Video Processing · Electrical Eng. & Systems 2025-08-06 Farzad Beizaee , Sina Hajimiri , Ismail Ben Ayed , Gregory Lodygensky , Christian Desrosiers , Jose Dolz

The widespread use of AI-generated content from diffusion models has raised significant concerns regarding misinformation and copyright infringement. Watermarking is a crucial technique for identifying these AI-generated images and…

Machine Learning · Computer Science 2026-02-13 Wenda Li , Huijie Zhang , Qing Qu

Segmenting objects in an environment is a crucial task for autonomous driving and robotics, as it enables a better understanding of the surroundings of each agent. Although camera sensors provide rich visual details, they are vulnerable to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Huawei Sun , Bora Kunter Sahin , Georg Stettinger , Maximilian Bernhard , Matthias Schubert , Robert Wille

Neural radiance field (NeRF) is an emerging view synthesis method that samples points in a three-dimensional (3D) space and estimates their existence and color probabilities. The disadvantage of NeRF is that it requires a long training time…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Hye Bin Yoo , Hyun Min Han , Sung Soo Hwang , Il Yong Chun

Falls in wet bathroom environments are a major safety risk for seniors living alone. Recent work has shown that mmWave-only, vibration-only, and existing multimodal schemes, such as vibration-triggered radar activation, early feature…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Haitian Wang , Yiren Wang , Xinyu Wang , Sheldon Fung , Atif Mansoor

Neural Radiance Field (NeRF) has shown remarkable performance in novel view synthesis but requires numerous multi-view images, limiting its practicality in few-shot scenarios. Ray augmentation has been proposed to alleviate overfitting…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Ingyun Lee , Jae Won Jang , Seunghyeon Seo , Nojun Kwak

Underwater imaging is fundamentally challenging due to wavelength-dependent light attenuation, strong scattering from suspended particles, turbidity-induced blur, and non-uniform illumination. These effects impair standard cameras and make…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Nick Truong , Pritam P. Karmokar , William J. Beksi

The goal of this paper is to detect the spatio-temporal extent of an action. The two-stream detection network based on RGB and flow provides state-of-the-art accuracy at the expense of a large model-size and heavy computation. We propose to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-12 Jiaojiao Zhao , Cees G. M. Snoek

Novel view synthesis from unconstrained in-the-wild image collections remains a significant yet challenging task due to photometric variations and transient occluders that complicate accurate scene reconstruction. Previous methods have…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Congrong Xu , Justin Kerr , Angjoo Kanazawa

The Depth from Defocus (DFD) imaging technique for measuring the size and number concentration of particles in a dispersed two-phase flow has up to now been restricted to relatively sparse particle densities and to identifying only…

Fluid Dynamics · Physics 2024-04-01 Rixin Xua , Zuojie Huanga , Wenchao Gonga , Wu Zhoua , Cameron Tropea

Visible watermark removal which involves watermark cleaning and background content restoration is pivotal to evaluate the resilience of watermarks. Existing deep neural network (DNN)-based models still struggle with large-area watermarks…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Yicheng Leng , Chaowei Fang , Junye Chen , Yixiang Fang , Sheng Li , Guanbin Li

Neural Radiance Fields (NeRF) offer the potential to benefit 3D reconstruction tasks, including aerial photogrammetry. However, the scalability and accuracy of the inferred geometry are not well-documented for large-scale aerial…

Computer Vision and Pattern Recognition · Computer Science 2024-06-07 Ningli Xu , Rongjun Qin , Debao Huang , Fabio Remondino

Experimental series of stratified gas-liquid two-phase flows had been carried out in a 26 mm i.d. transparent acrylic horizontal pipe. The study was aimed to determine the interfacial wave characteristics of the flow and to develop a high…

Fluid Dynamics · Physics 2015-11-20 Hadiyan Yusuf Kuntoro , Akhmad Zidni Hudaya , Okto Dinaryanto , Deendarlianto , Indarto

We propose RainyScape, an unsupervised framework for reconstructing clean scenes from a collection of multi-view rainy images. RainyScape consists of two main modules: a neural rendering module and a rain-prediction module that incorporates…

Computer Vision and Pattern Recognition · Computer Science 2024-04-18 Xianqiang Lyu , Hui Liu , Junhui Hou

A watermarking algorithm is proposed in this paper to address the copyright protection issue of implicit 3D models. The algorithm involves embedding watermarks into the images in the training set through an embedding network, and…

Cryptography and Security · Computer Science 2023-09-22 Lifeng Chen , Jia Liu , Yan Ke , Wenquan Sun , Weina Dong , Xiaozhong Pan

Estimating accurate, view-consistent geometry and camera poses from uncalibrated multi-view/video inputs remains challenging - especially at high spatial resolutions and over long sequences. We present DAGE, a dual-stream transformer whose…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Tuan Duc Ngo , Jiahui Huang , Seoung Wug Oh , Kevin Blackburn-Matzen , Evangelos Kalogerakis , Chuang Gan , Joon-Young Lee

Depth information serves as a crucial prerequisite for various visual tasks, whether on land or underwater. Recently, self-supervised methods have achieved remarkable performance on several terrestrial benchmarks despite the absence of…

Computer Vision and Pattern Recognition · Computer Science 2024-06-21 Yilin Ding , Kunqian Li , Han Mei , Shuaixin Liu , Guojia Hou

The underwater 3D scene reconstruction is a challenging, yet interesting problem with applications ranging from naval robots to VR experiences. The problem was successfully tackled by fully volumetric NeRF-based methods which can model both…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Huapeng Li , Wenxuan Song , Tianao Xu , Alexandre Elsig , Jonas Kulhanek