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Since the rise of deep learning, many computer vision tasks have seen significant advancements. However, the downside of deep learning is that it is very data-hungry. Especially for segmentation problems, training a deep neural net requires…

计算机视觉与模式识别 · 计算机科学 2021-10-13 Robby Neven , Davy Neven , Bert De Brabandere , Marc Proesmans , Toon Goedemé

Segmentation using deep learning has shown promising directions in medical imaging as it aids in the analysis and diagnosis of diseases. Nevertheless, a main drawback of deep models is that they require a large amount of pixel-level labels,…

计算机视觉与模式识别 · 计算机科学 2020-04-08 Sukesh Adiga , Jose Dolz , Herve Lombaert

The entropy error function has been widely used in neural networks. Nevertheless, the network training based on this error function generally leads to a slow convergence rate, and can easily be trapped in a local minimum or even with the…

机器学习 · 计算机科学 2024-05-30 Trong-Tuan Nguyen , Van-Dat Thang , Nguyen Van Thin , Phuong T. Nguyen

The goal in label-imbalanced and group-sensitive classification is to optimize relevant metrics such as balanced error and equal opportunity. Classical methods, such as weighted cross-entropy, fail when training deep nets to the terminal…

机器学习 · 计算机科学 2021-11-09 Ganesh Ramachandra Kini , Orestis Paraskevas , Samet Oymak , Christos Thrampoulidis

Deep neural networks can be effective means to automatically classify aerial images but is easy to overfit to the training data. It is critical for trained neural networks to be robust to variations that exist between training and test…

计算机视觉与模式识别 · 计算机科学 2019-09-25 Jiayun Wang , Patrick Virtue , Stella X. Yu

Segmentation of objects of interest is one of the central tasks in medical image analysis, which is indispensable for quantitative analysis. When developing machine-learning based methods for automated segmentation, manual annotations are…

计算机视觉与模式识别 · 计算机科学 2020-07-20 Hang Li , Dong Wei , Shilei Cao , Kai Ma , Liansheng Wang , Yefeng Zheng

Delivering meaningful uncertainty estimates is essential for a successful deployment of machine learning models in the clinical practice. A central aspect of uncertainty quantification is the ability of a model to return predictions that…

计算机视觉与模式识别 · 计算机科学 2023-03-03 Adrian Galdran , Johan Verjans , Gustavo Carneiro , Miguel A. González Ballester

The volume estimation of brain regions from MRI data is a key problem in many clinical applications, where the acquisition of data at high spatial resolution is desirable. While parallel MRI and constrained image reconstruction algorithms…

图像与视频处理 · 电气工程与系统科学 2021-05-20 Aniket Pramanik , Xiaodong Wu , Mathews Jacob

Despite the remarkable performance of supervised medical image segmentation models, relying on a large amount of labeled data is impractical in real-world situations. Semi-supervised learning approaches aim to alleviate this challenge using…

计算机视觉与模式识别 · 计算机科学 2025-09-17 Yunyao Lu , Yihang Wu , Ahmad Chaddad , Tareef Daqqaq , Reem Kateb

In the field of medical image analysis, achieving high accuracy is not enough; ensuring well-calibrated predictions is also crucial. Confidence scores of a deep neural network play a pivotal role in explainability by providing insights into…

计算机视觉与模式识别 · 计算机科学 2023-12-05 Abhishek Singh Sambyal , Usma Niyaz , Narayanan C. Krishnan , Deepti R. Bathula

Deep representation learning using triplet network for classification suffers from a lack of theoretical foundation and difficulty in tuning both the network and classifiers for performance. To address the problem, local-margin triplet loss…

Deep learning has proven to be an essential tool for medical image analysis. However, the need for accurately labeled input data, often requiring time- and labor-intensive annotation by experts, is a major limitation to the use of deep…

计算机视觉与模式识别 · 计算机科学 2020-01-28 Darvin Yi , Endre Grøvik , Michael Iv , Elizabeth Tong , Greg Zaharchuk , Daniel Rubin

Semi-supervised segmentation tackles the scarcity of annotations by leveraging unlabeled data with a small amount of labeled data. A prominent way to utilize the unlabeled data is by consistency training which commonly uses a…

计算机视觉与模式识别 · 计算机科学 2022-03-14 Sukesh Adiga , Jose Dolz , Herve Lombaert

Deep learning approaches often require huge datasets to achieve good generalization. This complicates its use in tasks like image-based medical diagnosis, where the small training datasets are usually insufficient to learn appropriate data…

计算机视觉与模式识别 · 计算机科学 2021-02-12 Roberto Vega , Pouneh Gorji , Zichen Zhang , Xuebin Qin , Abhilash Rakkunedeth Hareendranathan , Jeevesh Kapur , Jacob L. Jaremko , Russell Greiner

We empirically investigate the (negative) expected accuracy as an alternative loss function to cross entropy (negative log likelihood) for classification tasks. Coupled with softmax activation, it has small derivatives over most of its…

机器学习 · 计算机科学 2019-05-03 Ozan İrsoy

Semantic segmentation requires large amounts of pixel-wise annotations to learn accurate models. In this paper, we present a video prediction-based methodology to scale up training sets by synthesizing new training samples in order to…

计算机视觉与模式识别 · 计算机科学 2019-07-04 Yi Zhu , Karan Sapra , Fitsum A. Reda , Kevin J. Shih , Shawn Newsam , Andrew Tao , Bryan Catanzaro

Label smoothing loss is a widely adopted technique to mitigate overfitting in deep neural networks. This paper studies label smoothing from the perspective of Neural Collapse (NC), a powerful empirical and theoretical framework which…

机器学习 · 计算机科学 2025-09-30 Li Guo , George Andriopoulos , Zifan Zhao , Shuyang Ling , Zixuan Dong , Keith Ross

The Dice similarity coefficient (DSC) is both a widely used metric and loss function for biomedical image segmentation due to its robustness to class imbalance. However, it is well known that the DSC loss is poorly calibrated, resulting in…

图像与视频处理 · 电气工程与系统科学 2022-11-02 Michael Yeung , Leonardo Rundo , Yang Nan , Evis Sala , Carola-Bibiane Schönlieb , Guang Yang

Uncertainty quantification in automated image analysis is highly desired in many applications. Typically, machine learning models in classification or segmentation are only developed to provide binary answers; however, quantifying the…

In this paper, we study the data-dependent convergence and generalization behavior of gradient methods for neural networks with smooth activation. Our first result is a novel bound on the excess risk of deep networks trained by the logistic…

机器学习 · 计算机科学 2024-12-09 Hossein Taheri , Christos Thrampoulidis , Arya Mazumdar