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Purpose: To develop a convolutional neural network (CNN) solution for robust landmark detection in cardiac MR images. Methods: This retrospective study included cine, LGE and T1 mapping scans from two hospitals. The training set included…

图像与视频处理 · 电气工程与系统科学 2020-08-17 Hui Xue , Jessica Artico , Marianna Fontana , James C Moon , Rhodri H Davies , Peter Kellman

Facial landmark detection, head pose estimation, and facial deformation analysis are typical facial behavior analysis tasks in computer vision. The existing methods usually perform each task independently and sequentially, ignoring their…

计算机视觉与模式识别 · 计算机科学 2017-09-26 Yue Wu , Chao Gou , Qiang Ji

Importance: Machine learning (ML) approaches to facial landmark localization carry great clinical potential for quantitative assessment of facial function as they enable high-throughput automated quantification of relevant facial metrics…

The field of animal affective computing is rapidly emerging, and analysis of facial expressions is a crucial aspect. One of the most significant challenges that researchers in the field currently face is the scarcity of high-quality,…

计算机视觉与模式识别 · 计算机科学 2024-03-06 George Martvel , Ilan Shimshoni , Anna Zamansky

In 3D point cloud-based visual self-localization, pole landmarks have a great potential as landmarks for accurate and reliable localization due to their long-term stability under seasonal and weather changes. In this study, we aim to…

计算机视觉与模式识别 · 计算机科学 2023-05-12 Sun Yifei , Li Dingrui , Ye Minying , Tanaka Kanji

Purpose: Radiologists are tasked with visually scrutinizing large amounts of data produced by 3D volumetric imaging modalities. Small signals can go unnoticed during the 3d search because they are hard to detect in the visual periphery.…

人机交互 · 计算机科学 2024-05-02 Devi Klein , Srijita Karmakar , Aditya Jonnalagadda , Craig K. Abbey , Miguel P. Eckstein

This paper investigates how far a very deep neural network is from attaining close to saturating performance on existing 2D and 3D face alignment datasets. To this end, we make the following 5 contributions: (a) we construct, for the first…

计算机视觉与模式识别 · 计算机科学 2018-08-28 Adrian Bulat , Georgios Tzimiropoulos

The detection and tracking of human landmarks in video streams has gained in reliability partly due to the availability of affordable RGB-D sensors. The analysis of such time-varying geometric data is playing an important role in the…

计算机视觉与模式识别 · 计算机科学 2019-08-12 Amor Ben Tanfous , Hassen Drira , Boulbaba Ben Amor

Achieving robust multi-person 2D body landmark localization and pose estimation is essential for human behavior and interaction understanding as encountered for instance in HRI settings. Accurate methods have been proposed recently, but…

计算机视觉与模式识别 · 计算机科学 2019-12-03 Angel Martínez-González , Michael Villamizar , Olivier Canévet , Jean-Marc Odobez

Well-annotated medical images are costly and sometimes even impossible to acquire, hindering landmark detection accuracy to some extent. Semi-supervised learning alleviates the reliance on large-scale annotated data by exploiting the…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Runnan Chen , Yuexin Ma , Lingjie Liu , Nenglun Chen , Zhiming Cui , Guodong Wei , Wenping Wang

3D face registration is an important process in which a 3D face model is aligned and mapped to a template face. However, the task of 3D face registration becomes particularly challenging when dealing with partial face data, where only…

计算机视觉与模式识别 · 计算机科学 2024-05-17 Yuchen Guo , Hanqun Cao , Lok Ming Lui

Anatomical landmark segmentation serves as a critical initial step for robust multimodal registration during computer-assisted interventions. Current approaches predominantly rely on deep learning, which often necessitates the extensive…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Denis Krnjaca , Lorena Krames , Werner Nahm

This paper addresses the challenge of localization of anatomical landmarks in knee X-ray images at different stages of osteoarthritis (OA). Landmark localization can be viewed as regression problem, where the landmark position is directly…

计算机视觉与模式识别 · 计算机科学 2019-09-10 Aleksei Tiulpin , Iaroslav Melekhov , Simo Saarakkala

We propose a new, two-stage approach to the vertebrae centroid detection and localization problem. The first stage detects where the vertebrae appear in the scan using 3D samples, the second identifies the specific vertebrae within that…

图像与视频处理 · 电气工程与系统科学 2019-10-15 James McCouat , Ben Glocker

Deep learning methods have led to significant improvements in the performance on the facial landmark detection (FLD) task. However, detecting landmarks in challenging settings, such as head pose changes, exaggerated expressions, or uneven…

计算机视觉与模式识别 · 计算机科学 2024-02-26 Purbayan Kar , Vishal Chudasama , Naoyuki Onoe , Pankaj Wasnik , Vineeth Balasubramanian

Purpose: Interpreting chest radiographs (CXR) remains challenging due to the ambiguity of overlapping structures such as the lungs, heart, and bones. To address this issue, we propose a novel method for extracting fine-grained anatomical…

图像与视频处理 · 电气工程与系统科学 2023-06-08 Constantin Seibold , Alexander Jaus , Matthias A. Fink , Moon Kim , Simon Reiß , Ken Herrmann , Jens Kleesiek , Rainer Stiefelhagen

Automated data labeling techniques are crucial for accelerating the development of deep learning models, particularly in complex medical imaging applications. However, ensuring accuracy and efficiency remains challenging. This paper…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Yu-Hsi Chen

A commonly adopted approach to carry out detection tasks in medical imaging is to rely on an initial segmentation. However, this approach strongly depends on voxel-wise annotations which are repetitive and time-consuming to draw for medical…

The potential of the nasal region for expression robust 3D face recognition is thoroughly investigated by a novel five-step algorithm. First, the nose tip location is coarsely detected and the face is segmented, aligned and the nasal region…

计算机视觉与模式识别 · 计算机科学 2019-01-03 Mehryar Emambakhsh , Adrian Evans

Deep learning networks have shown promising performance for accurate object localization in medial images, but require large amount of annotated data for supervised training, which is expensive and expertise burdensome. To address this…

计算机视觉与模式识别 · 计算机科学 2021-05-26 Wenhui Lei , Wei Xu , Ran Gu , Hao Fu , Shaoting Zhang , Guotai Wang