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Image-based methods to analyze food images have alleviated the user burden and biases associated with traditional methods. However, accurate portion estimation remains a major challenge due to the loss of 3D information in the 2D…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Gautham Vinod , Jiangpeng He , Zeman Shao , Fengqing Zhu

Food portion estimation is crucial for monitoring health and tracking dietary intake. Image-based dietary assessment, which involves analyzing eating occasion images using computer vision techniques, is increasingly replacing traditional…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Jinge Ma , Xiaoyan Zhang , Gautham Vinod , Siddeshwar Raghavan , Jiangpeng He , Fengqing Zhu

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

Food volume estimation is an essential step in the pipeline of dietary assessment and demands the precise depth estimation of the food surface and table plane. Existing methods based on computer vision require either multi-image input or…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Ya Lu , Thomai Stathopoulou , Stavroula Mougiakakou

We aim to estimate food portion size, a property that is strongly related to the presence of food object in 3D space, from single monocular images under real life setting. Specifically, we are interested in end-to-end estimation of food…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Zeman Shao , Shaobo Fang , Runyu Mao , Jiangpeng He , Janine Wright , Deborah Kerr , Carol Jo Boushey , Fengqing Zhu

Dietary assessment is a key contributor to monitoring health status. Existing self-report methods are tedious and time-consuming with substantial biases and errors. Image-based food portion estimation aims to estimate food energy values…

Computer Vision and Pattern Recognition · Computer Science 2023-08-04 Zeman Shao , Gautham Vinod , Jiangpeng He , Fengqing Zhu

The recent success of pre-trained 2D vision models is mostly attributable to learning from large-scale datasets. However, compared with 2D image datasets, the current pre-training data of 3D point cloud is limited. To overcome this…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Yuan Yao , Yuanhan Zhang , Zhenfei Yin , Jiebo Luo , Wanli Ouyang , Xiaoshui Huang

Food computing is both important and challenging in computer vision (CV). It significantly contributes to the development of CV algorithms due to its frequent presence in datasets across various applications, ranging from classification and…

Point cloud is an important type of geometric data structure. Due to its irregular format, most researchers transform such data to regular 3D voxel grids or collections of images. This, however, renders data unnecessarily voluminous and…

Computer Vision and Pattern Recognition · Computer Science 2017-04-12 Charles R. Qi , Hao Su , Kaichun Mo , Leonidas J. Guibas

Reliance on images for dietary assessment is an important strategy to accurately and conveniently monitor an individual's health, making it a vital mechanism in the prevention and care of chronic diseases and obesity. However, image-based…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Gautham Vinod , Fengqing Zhu

Point cloud segmentation is a fundamental task in 3D scene understanding. Its progress is constrained by the high cost and time required for dense 3D annotations, making labeled samples difficult to obtain. Beyond annotation scarcity,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Thenukan Pathmanathan , Kanchan Keisham , Thangarajah Akilan

A reasonable and balanced diet is essential for maintaining good health. With the advancements in deep learning, automated nutrition estimation method based on food images offers a promising solution for monitoring daily nutritional intake…

Computer Vision and Pattern Recognition · Computer Science 2023-10-19 Yuzhe Han , Qimin Cheng , Wenjin Wu , Ziyang Huang

Food recognition has a wide range of applications, such as health-aware recommendation and self-service restaurants. Most previous methods of food recognition firstly locate informative regions in some weakly-supervised manners and then…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Yaohui Zhu , Linhu Liu , Jiang Tian

In 2D image processing, some attempts decompose images into high and low frequency components for describing edge and smooth parts respectively. Similarly, the contour and flat area of 3D objects, such as the boundary and seat area of a…

Computer Vision and Pattern Recognition · Computer Science 2021-02-09 Mutian Xu , Junhao Zhang , Zhipeng Zhou , Mingye Xu , Xiaojuan Qi , Yu Qiao

The remarkable breakthroughs in point cloud representation learning have boosted their usage in real-world applications such as self-driving cars and virtual reality. However, these applications usually have an urgent requirement for not…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Linfeng Zhang , Runpei Dong , Hung-Shuo Tai , Kaisheng Ma

We propose a novel deep learning framework for predicting permeability of porous media from their digital images. Unlike convolutional neural networks, instead of feeding the whole image volume as inputs to the network, we model the…

Image and Video Processing · Electrical Eng. & Systems 2021-10-13 Ali Kashefi , Tapan Mukerji

Large-scale datasets are usually required to train deep neural networks, but it increases the computational complexity hindering the practical applications. Recently, dataset distillation for images and texts has been attracting a lot of…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Jae-Young Yim , Dongwook Kim , Jae-Young Sim

In this paper, we propose a simple and general framework for self-supervised point cloud representation learning. Human beings understand the 3D world by extracting two levels of information and establishing the relationship between them.…

Computer Vision and Pattern Recognition · Computer Science 2022-02-10 Kexue Fu , Peng Gao , Renrui Zhang , Hongsheng Li , Yu Qiao , Manning Wang

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

Due to the growing concern of chronic diseases and other health problems related to diet, there is a need to develop accurate methods to estimate an individual's food and energy intake. Measuring accurate dietary intake is an open research…

Computer Vision and Pattern Recognition · Computer Science 2018-05-24 Shaobo Fang , Zeman Shao , Runyu Mao , Chichen Fu , Deborah A. Kerr , Carol J. Boushey , Edward J. Delp , Fengqing Zhu
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