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Geometrical optics (GO) is often used to model wave propagation in weakly inhomogeneous media and quantum-particle motion in the semiclassical limit. However, GO predicts spurious singularities of the wavefield near reflection points and,…

Optics · Physics 2020-09-10 N. A. Lopez , I. Y. Dodin

Object detection in aerial images is an active yet challenging task in computer vision because of the birdview perspective, the highly complex backgrounds, and the variant appearances of objects. Especially when detecting densely packed…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 Jian Ding , Nan Xue , Yang Long , Gui-Song Xia , Qikai Lu

Human-object interaction (HOI) synthesis is crucial for creating immersive and realistic experiences for applications such as virtual reality. Existing methods often rely on simplified object representations, such as the object's centroid…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Mengqing Xue , Yifei Liu , Ling Guo , Shaoli Huang , Changxing Ding

Reconstructing dynamic scenes with complex human-object interactions is a fundamental challenge in computer vision and graphics. Existing Gaussian Splatting methods either rely on human pose priors while neglecting dynamic objects, or…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Taewoo Kim , Suwoong Yeom , Jaehyun Pyun , Geonho Cha , Dongyoon Wee , Joonsik Nam , Yun-Seong Jeong , Kyeongbo Kong , Suk-Ju Kang

Spatio-temporal Human-Object Interaction (ST-HOI) understanding aims at detecting HOIs from videos, which is crucial for activity understanding. However, existing whole-body-object interaction video benchmarks overlook the truth that…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Xiaoyang Liu , Boran Wen , Xinpeng Liu , Zizheng Zhou , Hongwei Fan , Cewu Lu , Lizhuang Ma , Yulong Chen , Yong-Lu Li

Understanding which inductive biases could be helpful for the unsupervised learning of object-centric representations of natural scenes is challenging. In this paper, we systematically investigate the performance of two models on datasets…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Samuele Papa , Ole Winther , Andrea Dittadi

Human-object interaction (HOI) detection aims to localize human-object pairs and the interactions between them. Existing methods operate under a closed-world assumption, treating the task as a classification problem over a small, predefined…

Computer Vision and Pattern Recognition · Computer Science 2025-12-22 Zhaolin Cai , Huiyu Duan , Zitong Xu , Fan Li , Zhi Liu , Jing Liu , Wei Shen , Xiongkuo Min , Guangtao Zhai

Geometrical optics provides an instructive insight into Brownian motion, ``pushed" into a large-deviations regime by imposed constraints. Here we extend geometrical optics of Brownian motion by accounting for diffusion inhomogeneity in…

Statistical Mechanics · Physics 2023-09-26 Tal Bar , Baruch Meerson

When gravitational waves travel from their source to an observer, they interact with matter structures along their path, causing distinct deformations in their waveforms. In this study we introduce a novel theoretical framework for wave…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-31 Ginevra Braga , Alice Garoffolo , Angelo Ricciardone , Nicola Bartolo , Sabino Matarrese

Large Vision-Language Models (VLMs) have achieved remarkable success across diverse multimodal tasks but remain vulnerable to hallucinations rooted in inherent language bias. Despite recent progress, existing hallucination mitigation…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Yilin Yang , Zhenghui Guo , Yuke Wang , Omprakash Gnawali , Sheng Di , Chengming Zhang

Multi-modal large language models (MLLMs), such as GPT-4o, excel at integrating text and visual data but face systematic challenges when interpreting ambiguous or incomplete visual stimuli. This study leverages statistical modeling to…

Machine Learning · Computer Science 2024-12-09 Ching-Yi Wang

Human-Object Interaction (HOI) detection aims to simultaneously localize human-object pairs and recognize their interactions. While recent two-stage approaches have made significant progress, they still face challenges due to incomplete…

Computer Vision and Pattern Recognition · Computer Science 2025-10-06 Zhehao Li , Yucheng Qian , Chong Wang , Yinghao Lu , Zhihao Yang , Jiafei Wu

Perceptual geometry refers to the interdisciplinary research whose objectives focuses on study of geometry from the perspective of visual perception, and in turn, applies such geometric findings to the ecological study of vision. Perceptual…

Neurons and Cognition · Quantitative Biology 2011-11-29 Arash Sangari , Hasti Mirkia , Amir H. Assadi

For most of the anchor-based detectors, Intersection over Union(IoU) is widely utilized to assign targets for the anchors during training. However, IoU pays insufficient attention to the closeness of the anchor's center to the truth box's…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Shengkai Wu , Jinrong Yang , Hangcheng Yu , Lijun Gou , Xiaoping Li

We propose CG-HOI, the first method to address the task of generating dynamic 3D human-object interactions (HOIs) from text. We model the motion of both human and object in an interdependent fashion, as semantically rich human motion rarely…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Christian Diller , Angela Dai

Learning a discriminative model that distinguishes the specified target from surrounding distractors across frames is essential for generic object tracking (GOT). Dynamic adaptation of target representation against distractors remains…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Shih-Fang Chen , Jun-Cheng Chen , I-Hong Jhuo , Yen-Yu Lin

Although modern object detectors rely heavily on a significant amount of training data, humans can easily detect novel objects using a few training examples. The mechanism of the human visual system is to interpret spatial relationships…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Geonuk Kim , Hong-Gyu Jung , Seong-Whan Lee

World models enable robots to "imagine" future observations given current observations and planned actions, and have been increasingly adopted as generalized dynamics models to facilitate robot learning. Despite their promise, these models…

Robotics · Computer Science 2025-06-23 Yuxin Chen , Jianglan Wei , Chenfeng Xu , Boyi Li , Masayoshi Tomizuka , Andrea Bajcsy , Ran Tian

3D open-vocabulary scene understanding, crucial for advancing augmented reality and robotic applications, involves interpreting and locating specific regions within a 3D space as directed by natural language instructions. To this end, we…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Yansong Qu , Shaohui Dai , Xinyang Li , Jianghang Lin , Liujuan Cao , Shengchuan Zhang , Rongrong Ji

Modeling perception is critical for many applications and developments in computer graphics to optimize and evaluate content generation techniques. Most of the work to date has focused on central (foveal) vision. However, this is…

Graphics · Computer Science 2022-09-20 Cara Tursun , Piotr Didyk