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Scale-aware monocular depth estimation poses a significant challenge in computer-aided endoscopic navigation. However, existing depth estimation methods that do not consider the geometric priors struggle to learn the absolute scale from…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Ruofeng Wei , Bin Li , Kai Chen , Yiyao Ma , Yunhui Liu , Qi Dou

Data augmentation is an effective and universal technique for improving generalization performance of deep neural networks. It could enrich diversity of training samples that is essential in medical image segmentation tasks because 1) the…

Image and Video Processing · Electrical Eng. & Systems 2020-12-29 Ju Xu , Mengzhang Li , Zhanxing Zhu

This study proposes a sensing method using a millimeter-wave array radar and a depth camera to measure pulse waves at multiple sites on the human body. Using a three-dimensional shape model of the target human body measured by the depth…

Signal Processing · Electrical Eng. & Systems 2024-05-20 Takehito Koshisaka , Takuya Sakamoto

Purpose: Surgical scene understanding plays a critical role in the technology stack of tomorrow's intervention-assisting systems in endoscopic surgeries. For this, tracking the endoscope pose is a key component, but remains challenging due…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Michel Hayoz , Christopher Hahne , Mathias Gallardo , Daniel Candinas , Thomas Kurmann , Maximilian Allan , Raphael Sznitman

Important applications of advancements in machine learning, are in the area of healthcare, more so for neurological disorder detection. A crucial step towards understanding the neurological status, is to estimate the brain age using…

Image and Video Processing · Electrical Eng. & Systems 2024-07-10 Vamshi Krishna Kancharla , Neelam Sinha

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

We present a lightweight solution to recover 3D pose from multi-view images captured with spatially calibrated cameras. Building upon recent advances in interpretable representation learning, we exploit 3D geometry to fuse input images into…

Computer Vision and Pattern Recognition · Computer Science 2020-06-23 Edoardo Remelli , Shangchen Han , Sina Honari , Pascal Fua , Robert Wang

Most of the advanced control systems use sensor-based feedback for robust control. Tilt angle estimation is key feedback for many robotics and mechatronics applications in order to stabilize a system. Tilt angle cannot be directly measured…

Robotics · Computer Science 2024-09-02 Anandhu Suresh , Karnam Venkata Manga Raju

The physical load of jumps plays a critical role in injury prevention for volleyball players. However, manual video analysis of jump activities is time-intensive and costly, requiring significant effort and expensive hardware setups. The…

Signal Processing · Electrical Eng. & Systems 2025-05-12 Weiyi Xu , Chunzhuo Wang , Meng Shang , Camilla De Bleecker , Maria Torres Vega , Jos Vanrenterghem , Bart Vanrumste

3D human pose estimation captures the human joint points in three-dimensional space while keeping the depth information and physical structure. That is essential for applications that require precise pose information, such as human-computer…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Jianbin Jiao , Xina Cheng , Weijie Chen , Xiaoting Yin , Hao Shi , Kailun Yang

3D pose estimation is a challenging problem in computer vision. Most of the existing neural-network-based approaches address color or depth images through convolution networks (CNNs). In this paper, we study the task of 3D human pose…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Yufan Zhou , Haiwei Dong , Abdulmotaleb El Saddik

Accurate cattle live weight estimation is vital for livestock management, welfare, and productivity. Traditional methods, such as manual weighing using a walk-over weighing system or proximate measurements using body condition scoring,…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Rabin Dulal , Wenfeng Jia , Lihong Zheng , Jane Quinn

Sampling from high dimensional distributions and volume approximation of convex bodies are fundamental operations that appear in optimization, finance, engineering, artificial intelligence and machine learning. In this paper we present…

Computation · Statistics 2022-02-17 Apostolos Chalkis , Vissarion Fisikopoulos

We tackle the problem of estimating the 3D pose of an individual's upper limbs (arms+hands) from a chest mounted depth-camera. Importantly, we consider pose estimation during everyday interactions with objects. Past work shows that strong…

Computer Vision and Pattern Recognition · Computer Science 2014-12-02 Gregory Rogez , James S. Supancic , Deva Ramanan

We present an in-depth investigation of a fully automated Fourier-based analysis to determine the cell size and the width of its distribution in 3D biological tissues. The results are thoroughly tested using generated images, and we offer…

Biological Physics · Physics 2022-04-26 Tess Homan , Sylvain Monnier , Cécile Jebane , Alice Nicolas , Hélène Delanoe-Ayari

Egocentric, or first-person vision which became popular in recent years with an emerge in wearable technology, is different than exocentric (third-person) vision in some distinguishable ways, one of which being that the camera wearer is…

Computer Vision and Pattern Recognition · Computer Science 2016-10-11 Jessica Finocchiaro , Aisha Urooj Khan , Ali Borji

We compute the volumes of convex bodies that are given by inequalities of concave polynomials. These volumes are found to arbitrary precision thanks to the representation of periods by linear differential equations. Our approach rests on…

Algebraic Geometry · Mathematics 2026-05-15 Lakshmi Ramesh , Nicolas Weiss

While methods that regress 3D human meshes from images have progressed rapidly, the estimated body shapes often do not capture the true human shape. This is problematic since, for many applications, accurate body shape is as important as…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 Vasileios Choutas , Lea Muller , Chun-Hao P. Huang , Siyu Tang , Dimitrios Tzionas , Michael J. Black

Hand pose estimation from monocular depth images has been an important and challenging problem in the Computer Vision community. In this paper, we present a novel approach to estimate 3D hand joint locations from 2D depth images. Unlike…

Computer Vision and Pattern Recognition · Computer Science 2020-02-21 Rohan Lekhwani , Bhupendra Singh

We estimate the support of a uniform density, when it is assumed to be a convex polytope or, more generally, a convex body in $\R^d$. In the polytopal case, we construct an estimator achieving a rate which does not depend on the dimension…

Statistics Theory · Mathematics 2013-09-26 Victor-Emmanuel Brunel