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Blind Source Separation (BSS) has proven to be a powerful tool for the analysis of composite patterns in engineering and science. We introduce Convex Analysis of Mixtures (CAM) for separating non-negative well-grounded sources, which learns…

Machine Learning · Statistics 2015-12-14 Yitan Zhu , Niya Wang , David J. Miller , Yue Wang

Frequently misclassified pairs of classes that share many common acoustic properties exist in acoustic scene classification (ASC). To distinguish such pairs of classes, trivial details scattered throughout the data could be vital clues.…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-10 Hye-jin Shim , Jee-weon Jung , Ju-ho Kim , Ha-jin Yu

Current weakly supervised object localization and segmentation rely on class-discriminative visualization techniques to generate pseudo-labels for pixel-level training. Such visualization methods, including class activation mapping (CAM)…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Xiangwei Shi , Seyran Khademi , Yunqiang Li , Jan van Gemert

Though quite challenging, leveraging large-scale unlabeled or partially labeled images in a cost-effective way has increasingly attracted interests for its great importance to computer vision. To tackle this problem, many Active Learning…

Computer Vision and Pattern Recognition · Computer Science 2018-05-25 Keze Wang , Xiaopeng Yan , Dongyu Zhang , Lei Zhang , Liang Lin

Image-level weakly supervised semantic segmentation has received increasing attention due to its low annotation cost. Existing methods mainly rely on Class Activation Mapping (CAM) to obtain pseudo-labels for training semantic segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Xinqiao Zhao , Feilong Tang , Xiaoyang Wang , Jimin Xiao

Weakly supervised object localization (WSOL) methods allow training models to classify images and localize ROIs. WSOL only requires low-cost image-class annotations yet provides a visually interpretable classifier. Standard WSOL methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Alexis Guichemerre , Soufiane Belharbi , Mohammadhadi Shateri , Luke McCaffrey , Eric Granger

Class attribution maps (CAMs) provide local explanations for the decisions of convolutional neural networks. While widely used in practice, the evaluation of CAMs remains challenging due to the lack of ground-truth explanations, making it…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Luca Domeniconi , Alessandra Stramiglio , Michele Lombardi , Samuele Salti

Can we automatically group images into semantically meaningful clusters when ground-truth annotations are absent? The task of unsupervised image classification remains an important, and open challenge in computer vision. Several recent…

Computer Vision and Pattern Recognition · Computer Science 2020-07-06 Wouter Van Gansbeke , Simon Vandenhende , Stamatios Georgoulis , Marc Proesmans , Luc Van Gool

With the rapid advancement of deep learning, computational pathology has made significant progress in cancer diagnosis and subtyping. Tissue segmentation is a core challenge, essential for prognosis and treatment decisions. Weakly…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Hongyi Wu , Hong Zhang

We present a new model, training procedure and architecture to create precise maps of distinction between two classes of images. The objective is to comprehend, in pixel-wise resolution, the unique characteristics of a class. These maps can…

Computer Vision and Pattern Recognition · Computer Science 2023-05-05 Elnatan Kadar , Jonathan Brokman , Guy Gilboa

We consider the problem of retrieving objects from image data and learning to classify them into meaningful semantic categories with minimal supervision. To that end, we propose a fully differentiable unsupervised deep clustering approach…

Computer Vision and Pattern Recognition · Computer Science 2018-07-25 Steven Hickson , Anelia Angelova , Irfan Essa , Rahul Sukthankar

Though quite challenging, leveraging large-scale unlabeled or partially labeled data in learning systems (e.g., model/classifier training) has attracted increasing attentions due to its fundamental importance. To address this problem, many…

Computer Vision and Pattern Recognition · Computer Science 2019-01-15 Keze Wang , Liang Lin , Xiaopeng Yan , Ziliang Chen , Dongyu Zhang , Lei Zhang

Graph convolutional neural network (GCN) has drawn increasing attention and attained good performance in various computer vision tasks, however, there lacks a clear interpretation of GCN's inner mechanism. For standard convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Zhenpeng Feng , Xiyang Cui , Hongbing Ji , Mingzhe Zhu , Ljubisa Stankovic

The Segment Anything Model (SAM) excels at generating precise object masks from input prompts but lacks semantic awareness, failing to associate its generated masks with specific object categories. To address this limitation, we propose…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Rohit Kundu , Sudipta Paul , Arindam Dutta , Amit K. Roy-Chowdhury

Weakly supervised methods, such as class activation maps (CAM) based, have been applied to achieve bleeding segmentation with low annotation efforts in Wireless Capsule Endoscopy (WCE) images. However, the CAM labels tend to be extremely…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Fan Bai , Xiaohan Xing , Yutian Shen , Han Ma , Max Q. -H. Meng

In this study, the effects of different class labels created as a result of multiple conceptual meanings on localization using Weakly Supervised Learning presented on Car Dataset. In addition, the generated labels are included in the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Cenk Bircanoglu

We introduce a novel approach to estimation problems in settings with missing data. Our proposal -- the Correlation-Assisted Missing data (CAM) estimator -- works by exploiting the relationship between the observations with missing features…

Methodology · Statistics 2020-03-02 Timothy I. Cannings , Yingying Fan

Weakly supervised learning has emerged as an appealing alternative to alleviate the need for large labeled datasets in semantic segmentation. Most current approaches exploit class activation maps (CAMs), which can be generated from…

Computer Vision and Pattern Recognition · Computer Science 2022-01-17 Gaurav Patel , Jose Dolz

We present a conceptually simple self-supervised method for saliency detection. Our method generates and uses pseudo-ground truth labels for training. The generated pseudo-GT labels don't require any kind of human annotations (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-10 Rajeev Yasarla , Renliang Weng , Wongun Choi , Vishal Patel , Amir Sadeghian

Local feature matching is essential for many applications, such as localization and 3D reconstruction. However, it is challenging to match feature points accurately in various camera viewpoints and illumination conditions. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-01-26 Yerim Jung , Nur Suriza Syazwany Binti Ahmad Nizam , Sang-Chul Lee