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In landmark localization, due to ambiguities in defining their exact position, landmark annotations may suffer from large observer variabilities, which result in uncertain annotations. To model the annotation ambiguities of the training…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Franz Thaler , Christian Payer , Martin Urschler , Darko Stern

Anatomical Landmark Detection is the process of identifying key areas of an image for clinical measurements. Each landmark is a single ground truth point labelled by a clinician. A machine learning model predicts the locus of a landmark as…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Julian Wyatt , Irina Voiculescu

In this work, we study uncertainty estimation for anatomical landmark-based segmentation on chest X-rays. Inspired by hybrid neural network architectures that combine standard image convolutional encoders with graph-based generative…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Matias Cosarinsky , Nicolas Gaggion , Rodrigo Echeveste , Enzo Ferrante

Automatic anatomical landmark localization has made great strides by leveraging deep learning methods in recent years. The ability to quantify the uncertainty of these predictions is a vital component needed for these methods to be adopted…

Machine Learning · Computer Science 2022-12-20 Lawrence Schobs , Andrew J. Swift , Haiping Lu

Although heatmap regression is considered a state-of-the-art method to locate facial landmarks, it suffers from huge spatial complexity and is prone to quantization error. To address this, we propose a novel attentive one-dimensional…

Computer Vision and Pattern Recognition · Computer Science 2020-08-28 Shi Yin , Shangfei Wang , Xiaoping Chen , Enhong Chen

Heatmap-based anatomical landmark detection is still facing two unresolved challenges: 1) inability to accurately evaluate the distribution of heatmap; 2) inability to effectively exploit global spatial structure information. To address the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-22 Qikui Zhu , Yihui Bi , Danxin Wang , Xiangpeng Chu , Jie Chen , Yanqing Wang

Collecting annotations from multiple independent sources could mitigate the impact of potential noises and biases from a single source, which is a common practice in medical image segmentation. Learning segmentation networks from…

Image and Video Processing · Electrical Eng. & Systems 2023-11-14 Yifeng Wang , Luyang Luo , Mingxiang Wu , Qiong Wang , Hao Chen

Cephalometric Landmark Detection is the process of identifying key areas for cephalometry. Each landmark is a single GT point labelled by a clinician. A machine learning model predicts the probability locus of a landmark represented by a…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Julian Wyatt , Irina Voiculescu

Accurate medical image segmentation is crucial for diagnosis and analysis. However, the models without calibrated uncertainty estimates might lead to errors in downstream analysis and exhibit low levels of robustness. Estimating the…

Image and Video Processing · Electrical Eng. & Systems 2021-09-16 Yanwu Yang , Xutao Guo , Yiwei Pan , Pengcheng Shi , Haiyan Lv , Ting Ma

Facial landmark detection has been studied over decades. Numerous neural network (NN)-based approaches have been proposed for detecting landmarks, especially the convolutional neural network (CNN)-based approaches. In general, CNN-based…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Chih-Fan Hsu , Chia-Ching Lin , Ting-Yang Hung , Chin-Laung Lei , Kuan-Ta Chen

Segmentation uncertainty models predict a distribution over plausible segmentations for a given input, which they learn from the annotator variation in the training set. However, in practice these annotations can differ systematically in…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Kilian Zepf , Eike Petersen , Jes Frellsen , Aasa Feragen

Mitral valve repair is a surgery to restore the function of the mitral valve. To achieve this, a prosthetic ring is sewed onto the mitral annulus. Analyzing the sutures, which are punctured through the annulus for ring implantation, can be…

Computer Vision and Pattern Recognition · Computer Science 2021-01-11 Antonia Stern , Lalith Sharan , Gabriele Romano , Sven Koehler , Matthias Karck , Raffaele De Simone , Ivo Wolf , Sandy Engelhardt

Machine-learning-assisted cancer subtyping is a promising avenue in digital pathology. Cancer subtyping models, however, require careful training using expert annotations so that they can be inferred with a degree of known certainty (or…

As autonomous systems increasingly rely on onboard sensing for localization and perception, the parallel tasks of motion planning and state estimation become more strongly coupled. This coupling is well-captured by augmenting the planning…

Robotics · Computer Science 2020-09-14 Kristoffer M. Frey , Ted J. Steiner , Jonathan P. How

Automated landmark detection offers an efficient approach for medical professionals to understand patient anatomic structure and positioning using intra-operative imaging. While current detection methods for pelvic fluoroscopy demonstrate…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Chou Mo , Yehyun Suh , J. Ryan Martin , Daniel Moyer

Semi-supervised learning relaxes the need of large pixel-wise labeled datasets for image segmentation by leveraging unlabeled data. A prominent way to exploit unlabeled data is to regularize model predictions. Since the predictions of…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Sukesh Adiga , Jose Dolz , Herve Lombaert

Safe navigation in new environments requires autonomous vehicles and robots to accurately interpret their surroundings, relying on LiDAR scene segmentation, out-of-distribution (OOD) obstacle detection, and uncertainty computation. We…

Machine Learning · Computer Science 2024-10-14 Hanieh Shojaei , Qianqian Zou , Max Mehltretter

Learning a medical image segmentation model is an inherently ambiguous task, as uncertainties exist in both images (noise) and manual annotations (human errors and bias) used for model training. To build a trustworthy image segmentation…

Image and Video Processing · Electrical Eng. & Systems 2023-08-17 Xinyu Bai , Wenjia Bai

Since radiologists have different training and clinical experiences, they may provide various segmentation annotations for a lung nodule. Conventional studies choose a single annotation as the learning target by default, but they waste…

Image and Video Processing · Electrical Eng. & Systems 2022-06-08 Han Yang , Lu Shen , Mengke Zhang , Qiuli Wang

Deep learning-based edge detectors heavily rely on pixel-wise labels which are often provided by multiple annotators. Existing methods fuse multiple annotations using a simple voting process, ignoring the inherent ambiguity of edges and…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Caixia Zhou , Yaping Huang , Mengyang Pu , Qingji Guan , Li Huang , Haibin Ling
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