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Nutrition estimation is crucial for effective dietary management and overall health and well-being. Existing methods often struggle with sub-optimal accuracy and can be time-consuming. In this paper, we propose NuNet, a transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Zhengyi Kwan , Wei Zhang , Zhengkui Wang , Aik Beng Ng , Simon See

Accurate dietary monitoring is essential for promoting healthier eating habits. A key area of research is how people interact and consume food using utensils and hands. By tracking their position and orientation, it is possible to estimate…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Kevin Tan , Fan Yang , Yuhao Chen

The rapid development of deep learning and generative AI technologies has profoundly transformed the digital contact landscape, creating realistic Deepfake that poses substantial challenges to public trust and digital media integrity. This…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Ying Xu , Marius Pedersen , Kiran Raja

We propose a method for 3D object reconstruction and 6D-pose estimation from 2D images that uses knowledge about object shape as the primary key. In the proposed pipeline, recognition and labeling of objects in 2D images deliver 2D segment…

Computer Vision and Pattern Recognition · Computer Science 2022-03-03 Marcell Wolnitza , Osman Kaya , Tomas Kulvicius , Florentin Wörgötter , Babette Dellen

What's the most accurate 3D model of your face you can obtain while sitting at your desk? We attempt to answer this question in our work. High fidelity face reconstructions have so far been limited to either studio settings or through…

Computer Vision and Pattern Recognition · Computer Science 2020-03-20 Shubham Agrawal , Anuj Pahuja , Simon Lucey

Accurate 3D geometric perception is an important prerequisite for a wide range of spatial AI systems. While state-of-the-art methods depend on large-scale training data, acquiring consistent and precise 3D annotations from in-the-wild…

3D spatial perception is fundamental to generalizable robotic manipulation, yet obtaining reliable, high-quality 3D geometry remains challenging. Depth sensors suffer from noise and material sensitivity, while existing reconstruction models…

Robotics · Computer Science 2026-05-05 Sizhe Yang , Linning Xu , Hao Li , Juncheng Mu , Jia Zeng , Dahua Lin , Jiangmiao Pang

3D object detection and dense depth estimation are one of the most vital tasks in autonomous driving. Multiple sensor modalities can jointly attribute towards better robot perception, and to that end, we introduce a method for jointly…

Computer Vision and Pattern Recognition · Computer Science 2021-09-16 Shubham Shrivastava

The objective of this work is to achieve sensorless reconstruction of a 3D volume from a set of 2D freehand ultrasound images with deep implicit representation. In contrast to the conventional way that represents a 3D volume as a discrete…

Image and Video Processing · Electrical Eng. & Systems 2021-12-28 Pak-Hei Yeung , Linde Hesse , Moska Aliasi , Monique Haak , the INTERGROWTH-21st Consortium , Weidi Xie , Ana I. L. Namburete

Regular nutrient intake monitoring in hospitalised patients plays a critical role in reducing the risk of disease-related malnutrition (DRM). Although several methods to estimate nutrient intake have been developed, there is still a clear…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Ya Lu , Thomai Stathopoulou , Maria F. Vasiloglou , Stergios Christodoulidis , Beat Blum , Thomas Walser , Vinzenz Meier , Zeno Stanga , Stavroula G. Mougiakakou

Malnutrition is a multidomain problem affecting 54% of older adults in long-term care (LTC). Monitoring nutritional intake in LTC is laborious and subjective, limiting clinical inference capabilities. Recent advances in automatic…

Computer Vision and Pattern Recognition · Computer Science 2022-02-02 Kaylen J Pfisterer , Robert Amelard , Audrey G Chung , Braeden Syrnyk , Alexander MacLean , Heather H Keller , Alexander Wong

Accurate assessment of dietary intake requires improved tools to overcome limitations of current methods including user burden and measurement error. Emerging technologies such as image-based approaches using advanced machine learning…

Computer Vision and Pattern Recognition · Computer Science 2021-10-06 Zeman Shao , Yue Han , Jiangpeng He , Runyu Mao , Janine Wright , Deborah Kerr , Carol Boushey , Fengqing Zhu

Effective reef monitoring requires the quantification of coral growth via accurate volumetric and surface area estimates, which is a challenging task due to the complex morphology of corals. We propose a novel, lightweight, and scalable…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Diego Eustachio Farchione , Ramzi Idoughi , Peter Wonka

Deep CNN-based methods have so far achieved the state of the art results in multi-view 3D object reconstruction. Despite the considerable progress, the two core modules of these methods - multi-view feature extraction and fusion, are…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Dan Wang , Xinrui Cui , Xun Chen , Zhengxia Zou , Tianyang Shi , Septimiu Salcudean , Z. Jane Wang , Rabab Ward

Given a single scene image, this paper proposes a method of Category-level 6D Object Pose and Size Estimation (COPSE) from the point cloud of the target object, without external real pose-annotated training data. Specifically, beyond the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Haitao Lin , Zichang Liu , Chilam Cheang , Yanwei Fu , Guodong Guo , Xiangyang Xue

Dietary assessment is essential to maintaining a healthy lifestyle. Automatic image-based dietary assessment is a growing field of research due to the increasing prevalence of image capturing devices (e.g. mobile phones). In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2023-09-25 Jack Ma , Jiangpeng He , Fengqing Zhu

While data has certainly taken the center stage in computer vision in recent years, it can still be difficult to obtain in certain scenarios. In particular, acquiring ground truth 3D shapes of objects pictured in 2D images remains a…

Computer Vision and Pattern Recognition · Computer Science 2016-08-02 Joao Carreira , Sara Vicente , Lourdes Agapito , Jorge Batista

We present FLARE, a feed-forward model designed to infer high-quality camera poses and 3D geometry from uncalibrated sparse-view images (i.e., as few as 2-8 inputs), which is a challenging yet practical setting in real-world applications.…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Shangzhan Zhang , Jianyuan Wang , Yinghao Xu , Nan Xue , Christian Rupprecht , Xiaowei Zhou , Yujun Shen , Gordon Wetzstein

Real-time 3D reconstruction enables fast dense mapping of the environment which benefits numerous applications, such as navigation or live evaluation of an emergency. In contrast to most real-time capable approaches, our approach does not…

Computer Vision and Pattern Recognition · Computer Science 2021-04-22 Max Hermann , Boitumelo Ruf , Martin Weinmann

Accurate quantification of forest coverage and combustible biomass (fuel load) is critical for wildfire risk assessment and ecosystem management. However, traditional methods relying on airborne LiDAR or field surveys are cost-prohibitive…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Quanyun Wu , Kyle Gao , Wentao Sun , Zhengsen Xu , Hudson Sun , Linlin Xu , Yuhao Chen , David A. Clausi , Jonathan Li