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We propose a novel method for non-rigid 3-D motion correction of orthogonally raster-scanned optical coherence tomography angiography volumes. This is the first approach that aligns predominantly axial structural features like retinal…

Knee injuries are frequent, varied and often require the patient to undergo intensive rehabilitation for several months. Treatment protocols usually contemplate some recurrent measurements in order to assess progress, such as goniometry.…

计算机视觉与模式识别 · 计算机科学 2018-07-20 João Bernardino , Luís Filipe Teixeira , Hugo Sereno Ferreira

We address the problem of inferring the anatomic skeleton of a person, in an arbitrary pose, from the 3D surface of the body; i.e. we predict the inside (bones) from the outside (skin). This has many applications in medicine and…

计算机视觉与模式识别 · 计算机科学 2022-04-22 Marilyn Keller , Silvia Zuffi , Michael J. Black , Sergi Pujades

This paper presents a novel framework for processing volumetric medical information using Visual Transformers (ViTs). First, We extend the state-of-the-art Swin Transformer model to the 3D medical domain. Second, we propose a new approach…

图像与视频处理 · 电气工程与系统科学 2024-06-06 Cristhian Forigua , Maria Escobar , Pablo Arbelaez

Advances in computer vision, particularly in optical image-based 3D reconstruction and feature matching, enable applications like marker-less surgical navigation and digitization of surgery. However, their development is hindered by a lack…

The Segment Anything Model (SAM), originally built on a 2D Vision Transformer (ViT), excels at capturing global patterns in 2D natural images but struggles with 3D medical imaging modalities like CT and MRI. These modalities require…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Xiang Gao , Kai Lu

Estimating 3D poses and shapes in the form of meshes from monocular RGB images is challenging. Obviously, it is more difficult than estimating 3D poses only in the form of skeletons or heatmaps. When interacting persons are involved, the 3D…

计算机视觉与模式识别 · 计算机科学 2022-11-01 Junuk Cha , Muhammad Saqlain , GeonU Kim , Mingyu Shin , Seungryul Baek

In this paper, we propose a novel graph convolutional network architecture, Graph Stacked Hourglass Networks, for 2D-to-3D human pose estimation tasks. The proposed architecture consists of repeated encoder-decoder, in which…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Tianhan Xu , Wataru Takano

Convolutional Neural Networks (CNNs) have been recently employed to solve problems from both the computer vision and medical image analysis fields. Despite their popularity, most approaches are only able to process 2D images while most…

计算机视觉与模式识别 · 计算机科学 2016-06-16 Fausto Milletari , Nassir Navab , Seyed-Ahmad Ahmadi

In medical imaging analysis, deep learning has shown promising results. We frequently rely on volumetric data to segment medical images, necessitating the use of 3D architectures, which are commended for their capacity to capture interslice…

图像与视频处理 · 电气工程与系统科学 2023-05-18 Ikboljon Sobirov , Numan Saeed , Mohammad Yaqub

We propose a method SPGNet for 3D human pose estimation that mixes multi-dimensional re-projection into supervised learning. In this method, the 2D-to-3D-lifting network predicts the global position and coordinates of the 3D human pose.…

计算机视觉与模式识别 · 计算机科学 2022-06-07 Zihan Wang , Ruimin Chen , Mengxuan Liu , Guanfang Dong , Anup Basu

Radiographs are used as the most important imaging tool for identifying spine anomalies in clinical practice. The evaluation of spinal bone lesions, however, is a challenging task for radiologists. This work aims at developing and…

图像与视频处理 · 电气工程与系统科学 2021-06-25 Hieu T. Nguyen , Hieu H. Pham , Nghia T. Nguyen , Ha Q. Nguyen , Thang Q. Huynh , Minh Dao , Van Vu

Recovering the 3D shape of transparent objects using a small number of unconstrained natural images is an ill-posed problem. Complex light paths induced by refraction and reflection have prevented both traditional and deep multiview stereo…

计算机视觉与模式识别 · 计算机科学 2020-07-24 Zhengqin Li , Yu-Ying Yeh , Manmohan Chandraker

We present THUNDR, a transformer-based deep neural network methodology to reconstruct the 3d pose and shape of people, given monocular RGB images. Key to our methodology is an intermediate 3d marker representation, where we aim to combine…

计算机视觉与模式识别 · 计算机科学 2021-06-18 Mihai Zanfir , Andrei Zanfir , Eduard Gabriel Bazavan , William T. Freeman , Rahul Sukthankar , Cristian Sminchisescu

Radiography is widely used in orthopedics for its affordability and low radiation exposure. 3D reconstruction from a single radiograph, so-called 2D-3D reconstruction, offers the possibility of various clinical applications, but achieving…

图像与视频处理 · 电气工程与系统科学 2024-09-26 Yi Gu , Yoshito Otake , Keisuke Uemura , Masaki Takao , Mazen Soufi , Seiji Okada , Nobuhiko Sugano , Hugues Talbot , Yoshinobu Sato

Recently, regression-based methods have dominated the field of 3D human pose and shape estimation. Despite their promising results, a common issue is the misalignment between predictions and image observations, often caused by minor joint…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Tom Wehrbein , Bodo Rosenhahn , Iain Matthews , Carsten Stoll

The high prevalence of spinal stenosis results in a large volume of MRI imaging, yet interpretation can be time-consuming with high inter-reader variability even among the most specialized radiologists. In this paper, we develop an…

As a fundamental part of computational healthcare, Computer Tomography (CT) and Magnetic Resonance Imaging (MRI) provide volumetric data, making the development of algorithms for 3D image analysis a necessity. Despite being computationally…

图像与视频处理 · 电气工程与系统科学 2023-07-26 C. I. Ugwu , S. Casarin , O. Lanz

Model-based human pose estimation is currently approached through two different paradigms. Optimization-based methods fit a parametric body model to 2D observations in an iterative manner, leading to accurate image-model alignments, but are…

计算机视觉与模式识别 · 计算机科学 2019-09-30 Nikos Kolotouros , Georgios Pavlakos , Michael J. Black , Kostas Daniilidis

Purpose: To use and test a labelling algorithm that operates on two-dimensional (2D) reformations, rather than three-dimensional (3D) data to locate and identify vertebrae. Methods: We improved the Btrfly Net (described by Sekuboyina et al)…

计算机视觉与模式识别 · 计算机科学 2021-03-01 Anjany Sekuboyina , Markus Rempfler , Alexander Valentinitsch , Bjoern H. Menze , Jan S. Kirschke