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In medical imaging, obtaining large amounts of labeled data is often a hurdle, because annotations and pathologies are scarce. Anomaly detection is a method that is capable of detecting unseen abnormal data while only being trained on…

计算机视觉与模式识别 · 计算机科学 2022-06-09 Djennifer K. Madzia-Madzou , Hugo J. Kuijf

With the development of convolutional neural network, deep learning has shown its success for retinal disease detection from optical coherence tomography (OCT) images. However, deep learning often relies on large scale labelled data for…

计算机视觉与模式识别 · 计算机科学 2020-02-04 Kang Zhou , Shenghua Gao , Jun Cheng , Zaiwang Gu , Huazhu Fu , Zhi Tu , Jianlong Yang , Yitian Zhao , Jiang Liu

Open-set recognition and adversarial defense study two key aspects of deep learning that are vital for real-world deployment. The objective of open-set recognition is to identify samples from open-set classes during testing, while…

计算机视觉与模式识别 · 计算机科学 2022-02-15 Rui Shao , Pramuditha Perera , Pong C. Yuen , Vishal M. Patel

Because of the invisible human keypoints in images caused by illumination, occlusion and overlap, it is likely to produce unreasonable human pose prediction for most of the current human pose estimation methods. In this paper, we design a…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Lei Tian , Guoqiang Liang , Peng Wang , Chunhua Shen

Colonoscopy is the tool of choice for preventing Colorectal Cancer, by detecting and removing polyps before they become cancerous. However, colonoscopy is hampered by the fact that endoscopists routinely miss 22-28% of polyps. While some of…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Daniel Freedman , Yochai Blau , Liran Katzir , Amit Aides , Ilan Shimshoni , Danny Veikherman , Tomer Golany , Ariel Gordon , Greg Corrado , Yossi Matias , Ehud Rivlin

Colorectal polyps are generally benign alterations that, if not identified promptly and managed successfully, can progress to cancer and cause affectations on the colon mucosa, known as adenocarcinoma. Today advances in Deep Learning have…

图像与视频处理 · 电气工程与系统科学 2025-01-22 Daniela L. Ramos , Hector J. Hortua

An increasing number of colonoscopic guidance and assistance systems rely on machine learning algorithms which require a large amount of high-quality training data. In order to ensure high performance, the latter has to resemble a…

图像与视频处理 · 电气工程与系统科学 2022-05-24 Abhishek Dinkar Jagtap , Mattias Heinrich , Marian Himstedt

Early identification and removal of polyps can reduce the risk of developing colorectal cancer. However, the diverse morphologies, complex backgrounds and often concealed nature of polyps make polyp segmentation in colonoscopy images highly…

计算机视觉与模式识别 · 计算机科学 2026-04-17 Yanguang Sun , Hengmin Zhang , Jianjun Qian , Jian Yang , Lei Luo

Anomaly detection has wide applications in machine intelligence but is still a difficult unsolved problem. Major challenges include the rarity of labeled anomalies and it is a class highly imbalanced problem. Traditional unsupervised…

机器学习 · 计算机科学 2021-04-27 Zhi Chen , Jiang Duan , Li Kang , Guoping Qiu

Survival rates for colorectal cancer are higher when polyps are detected at an early stage and can be removed before they develop into malignant tumors. Automated polyp detection, which is dominated by deep learning based methods, seeks to…

The deep generative adversarial networks (GAN) recently have been shown to be promising for different computer vision applications, like image edit- ing, synthesizing high resolution images, generating videos, etc. These networks and the…

计算机视觉与模式识别 · 计算机科学 2018-04-18 Ali Diba , Vivek Sharma , Rainer Stiefelhagen , Luc Van Gool

Anomaly detection aims to detect abnormal events by a model of normality. It plays an important role in many domains such as network intrusion detection, criminal activity identity and so on. With the rapidly growing size of accessible…

机器学习 · 计算机科学 2018-08-02 Chu Wang , Yan-Ming Zhang , Cheng-Lin Liu

One of the most challenges in medical imaging is the lack of data. It is proven that classical data augmentation methods are useful but still limited due to the huge variation in images. Using generative adversarial networks (GAN) is a…

图像与视频处理 · 电气工程与系统科学 2021-04-16 Amine Amyar , Su Ruan , Pierre Vera , Pierre Decazes , Romain Modzelewski

This study presents an adversarial method for anomaly detection in real-world applications, leveraging the power of generative adversarial neural networks (GANs) through cycle consistency in reconstruction error. Previous methods suffer…

机器学习 · 计算机科学 2024-05-01 Zahra Dehghanian , Saeed Saravani , Maryam Amirmazlaghani , Mohammad Rahmati

Biomedical image datasets can be imbalanced due to the rarity of targeted diseases. Generative Adversarial Networks play a key role in addressing this imbalance by enabling the generation of synthetic images to augment datasets. It is…

图像与视频处理 · 电气工程与系统科学 2022-04-13 Muhammad Muneeb Saad , Mubashir Husain Rehmani , Ruairi O'Reilly

Colonoscopy is crucial for identifying adenomatous polyps and preventing colorectal cancer. However, developing robust models for polyp detection is challenging by the limited size and accessibility of existing colonoscopy datasets. While…

计算机视觉与模式识别 · 计算机科学 2025-01-07 Yifan Xie , Jingge Wang , Tao Feng , Fei Ma , Yang Li

X-ray tomography is capable of imaging the interior of objects in three dimensions non-invasively, with applications in biomedical imaging, materials science, electronic inspection, and other fields. The reconstruction process can be an…

图像与视频处理 · 电气工程与系统科学 2022-06-22 Zhen Guo , Jung Ki Song , George Barbastathis , Michael E. Glinsky , Courtenay T. Vaughan , Kurt W. Larson , Bradley K. Alpert , Zachary H. Levine

Taking a photo outside, can we predict the immediate future, e.g., how would the cloud move in the sky? We address this problem by presenting a generative adversarial network (GAN) based two-stage approach to generating realistic time-lapse…

计算机视觉与模式识别 · 计算机科学 2018-04-02 Wei Xiong , Wenhan Luo , Lin Ma , Wei Liu , Jiebo Luo

Detecting and segmenting polyps is crucial for expediting the diagnosis of colon cancer. This is a challenging task due to the large variations of polyps in color, texture, and lighting conditions, along with subtle differences between the…

计算机视觉与模式识别 · 计算机科学 2024-03-28 Krushi Patel , Fengjun Li , Guanghui Wang

Motion artifacts are a primary source of magnetic resonance (MR) image quality deterioration with strong repercussions on diagnostic performance. Currently, MR motion correction is carried out either prospectively, with the help of motion…

计算机视觉与模式识别 · 计算机科学 2019-11-26 Karim Armanious , Sergios Gatidis , Konstantin Nikolaou , Bin Yang , Thomas Küstner