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Sparse coding consists in representing signals as sparse linear combinations of atoms selected from a dictionary. We consider an extension of this framework where the atoms are further assumed to be embedded in a tree. This is achieved…

Machine Learning · Statistics 2011-08-18 Rodolphe Jenatton , Julien Mairal , Guillaume Obozinski , Francis Bach

Often in medical imaging, it is prohibitively challenging to produce enough boundary annotations to train deep neural networks for accurate tumor segmentation. We propose the use of weak labels about whether an image presents tumor or…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Eugene Vorontsov , Pavlo Molchanov , Christopher Beckham , Jan Kautz , Samuel Kadoury

Early diagnosis and accurate segmentation of brain tumors are imperative for successful treatment. Unfortunately, manual segmentation is time consuming, costly and despite extensive human expertise often inaccurate. Here, we present an…

Image and Video Processing · Electrical Eng. & Systems 2019-10-07 Markus Frey , Matthias Nau

A cascade of fully convolutional neural networks is proposed to segment multi-modal Magnetic Resonance (MR) images with brain tumor into background and three hierarchical regions: whole tumor, tumor core and enhancing tumor core. The…

Computer Vision and Pattern Recognition · Computer Science 2018-07-23 Guotai Wang , Wenqi Li , Sebastien Ourselin , Tom Vercauteren

Hyperspectral imaging offers new perspectives for diverse applications, ranging from the monitoring of the environment using airborne or satellite remote sensing, precision farming, food safety, planetary exploration, or astrophysics.…

Image and Video Processing · Electrical Eng. & Systems 2021-11-19 Théo Bodrito , Alexandre Zouaoui , Jocelyn Chanussot , Julien Mairal

In this paper, we propose an automatic brain tumor segmentation approach (e.g., PixelNet) using a pixel-level convolutional neural network (CNN). The model extracts feature from multiple convolutional layers and concatenate them to form a…

Image and Video Processing · Electrical Eng. & Systems 2022-04-26 Mobarakol Islam , Hongliang Ren

Brain tumour segmentation is an essential task in medical image processing. Early diagnosis of brain tumours plays a crucial role in improving treatment possibilities and increases the survival rate of the patients. Manual segmentation of…

Image and Video Processing · Electrical Eng. & Systems 2021-11-08 Angad Ripudaman Singh Bajwa

We explore encoding brain symmetry into a neural network for a brain tumor segmentation task. A healthy human brain is symmetric at a high level of abstraction, and the high-level asymmetric parts are more likely to be tumor regions. Paying…

Computer Vision and Pattern Recognition · Computer Science 2017-11-20 Hejia Zhang , Xia Zhu , Theodore L. Willke

In the last few years, deep learning classifiers have shown promising results in image-based medical diagnosis. However, interpreting the outputs of these models remains a challenge. In cancer diagnosis, interpretability can be achieved by…

Computer Vision and Pattern Recognition · Computer Science 2021-06-16 Kangning Liu , Yiqiu Shen , Nan Wu , Jakub Chłędowski , Carlos Fernandez-Granda , Krzysztof J. Geras

Magnetic Resonance Imaging (MRI) is an important diagnostic tool for precise detection of various pathologies. Magnetic Resonance (MR) is more preferred than Computed Tomography (CT) due to the high resolution in MR images which help in…

Computer Vision and Pattern Recognition · Computer Science 2017-11-01 Pranay Manocha , Snehal Bhasme , Tanvi Gupta , BK Panigrahi , Tapan K. Gandhi

Anomaly detection for Magnetic Resonance Images (MRIs) can be solved with unsupervised methods by learning the distribution of healthy images and identifying anomalies as outliers. In presence of an additional dataset of unlabelled data…

Machine Learning · Computer Science 2020-07-27 Alexandra-Ioana Albu , Alina Enescu , Luigi Malagò

In this paper, we present a fully automatic brain tumor segmentation and classification model using a Deep Convolutional Neural Network that includes a multiscale approach. One of the differences of our proposal with respect to previous…

Image and Video Processing · Electrical Eng. & Systems 2024-02-12 Francisco Javier Díaz-Pernas , Mario Martínez-Zarzuela , Míriam Antón-Rodríguez , David González-Ortega

Blind image restoration is a non-convex problem which involves restoration of images from an unknown blur kernel. The factors affecting the performance of this restoration are how much prior information about an image and a blur kernel are…

Computer Vision and Pattern Recognition · Computer Science 2015-12-15 Chia-Chen Lee , Wen-Liang Hwang

Recently deep learning has been playing a major role in the field of computer vision. One of its applications is the reduction of human judgment in the diagnosis of diseases. Especially, brain tumor diagnosis requires high accuracy, where…

Computer Vision and Pattern Recognition · Computer Science 2018-09-24 Zahra Sobhaninia , Safiyeh Rezaei , Alireza Noroozi , Mehdi Ahmadi , Hamidreza Zarrabi , Nader Karimi , Ali Emami , Shadrokh Samavi

Medical image processing usually requires a model trained with carefully crafted datasets due to unique image characteristics and domain-specific challenges, especially in pathology. Primitive detection and segmentation in digitized tissue…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Abu Bakor Hayat Arnob , Xiangxue Wang , Yiping Jiao , Xiao Gan , Wenlong Ming , Jun Xu

Machine-based brain tumor segmentation can help doctors make better diagnoses. However, the complex structure of brain tumors and expensive pixel-level annotations present challenges for automatic tumor segmentation. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2024-08-05 Ruitao Xie , Limai Jiang , Xiaoxi He , Yi Pan , Yunpeng Cai

Automatic and accurate tumor segmentation on medical images is in high demand to assist physicians with diagnosis and treatment. However, it is difficult to obtain massive amounts of annotated training data required by the deep-learning…

Computer Vision and Pattern Recognition · Computer Science 2021-08-06 Xiaoman Zhang , Shixiang Feng , Yuhang Zhou , Ya Zhang , Yanfeng Wang

Breast tumor segmentation is a critical task in computer-aided diagnosis (CAD) systems for breast cancer detection because accurate tumor size, shape and location are important for further tumor quantification and classification. However,…

Image and Video Processing · Electrical Eng. & Systems 2020-09-29 Bryar Shareef , Alex Vakanski , Min Xian , Phoebe E. Freer

Purpose: In this paper, we investigate a framework for interactive brain tumor segmentation which, at its core, treats the problem of interactive brain tumor segmentation as a machine learning problem. Methods: This method has an advantage…

Computer Vision and Pattern Recognition · Computer Science 2016-05-20 Mohammad Havaei , Hugo Larochelle , Philippe Poulin , Pierre-Marc Jodoin

One of the most effective ways to treat liver cancer is to perform precise liver resection surgery, the key step of which includes precise digital image segmentation of the liver and its tumor. However, traditional liver parenchymal…

Other Quantitative Biology · Quantitative Biology 2024-06-11 Danyi Huang , Ziang Liu , Yizhou Li