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The costly process of obtaining semantic segmentation labels has driven research towards weakly supervised semantic segmentation (WSSS) methods, using only image-level, point, or box labels. The lack of dense scene representation requires…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Peri Akiva , Kristin Dana

Image retrieval in realistic scenarios targets large dynamic datasets of unlabeled images. In these cases, training or fine-tuning a model every time new images are added to the database is neither efficient nor scalable. Convolutional…

Computer Vision and Pattern Recognition · Computer Science 2017-07-11 Albert Jimenez , Jose M. Alvarez , Xavier Giro-i-Nieto

Weakly supervised semantic segmentation (WSSS) models relying on class activation maps (CAMs) have achieved desirable performance comparing to the non-CAMs-based counterparts. However, to guarantee WSSS task feasible, we need to generate…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Tao Chen , Yazhou Yao , Jinhui Tang

Using deep learning models to diagnose cancer from histology data presents several challenges. Cancer grading and localization of regions of interest (ROIs) in these images normally relies on both image- and pixel-level labels, the latter…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Jérôme Rony , Soufiane Belharbi , Jose Dolz , Ismail Ben Ayed , Luke McCaffrey , Eric Granger

Weakly supervised object localization (WSOL) is a challenging problem when given image category labels but requires to learn object localization models. Optimizing a convolutional neural network (CNN) for classification tends to activate…

Computer Vision and Pattern Recognition · Computer Science 2021-08-05 Wei Gao , Fang Wan , Xingjia Pan , Zhiliang Peng , Qi Tian , Zhenjun Han , Bolei Zhou , Qixiang Ye

CAM-based methods are widely-used post-hoc interpretability method that produce a saliency map to explain the decision of an image classification model. The saliency map highlights the important areas of the image relevant to the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Magamed Taimeskhanov , Ronan Sicre , Damien Garreau

In recent years, weakly supervised models have aided in mass detection using mammography images, decreasing the need for pixel-level annotations. However, most existing models in the literature rely on Class Activation Maps (CAM) as the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Vicente Sampaio , Filipe R. Cordeiro

The need for Explainable AI is increasing with the development of deep learning. The saliency maps derived from convolutional neural networks generally fail in localizing with accuracy the image features justifying the network prediction.…

Computer Vision and Pattern Recognition · Computer Science 2022-05-09 Alexandre Englebert , Olivier Cornu , Christophe De Vleeschouwer

Magnetic resonance imaging (MRI) is a commonly used technique for brain tumor segmentation, which is critical for evaluating patients and planning treatment. To make the labeling process less laborious and dependent on expertise,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Yu-Jen Chen , Yiyu Shi , Tsung-Yi Ho

Recently, increasing attention has been drawn to the internal mechanisms of convolutional neural networks, and the reason why the network makes specific decisions. In this paper, we develop a novel post-hoc visual explanation method called…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Haofan Wang , Zifan Wang , Mengnan Du , Fan Yang , Zijian Zhang , Sirui Ding , Piotr Mardziel , Xia Hu

Weakly Supervised Object Localization (WSOL), which aims to localize objects by only using image-level labels, has attracted much attention because of its low annotation cost in real applications. Recent studies leverage the advantage of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Haotian Bai , Ruimao Zhang , Jiong Wang , Xiang Wan

We propose a technique for producing "visual explanations" for decisions from a large class of CNN-based models, making them more transparent. Our approach - Gradient-weighted Class Activation Mapping (Grad-CAM), uses the gradients of any…

Computer Vision and Pattern Recognition · Computer Science 2019-12-04 Ramprasaath R. Selvaraju , Michael Cogswell , Abhishek Das , Ramakrishna Vedantam , Devi Parikh , Dhruv Batra

Image-level weakly supervised semantic segmentation (WSSS) is a fundamental yet challenging computer vision task facilitating scene understanding and automatic driving. Most existing methods resort to classification-based Class Activation…

Computer Vision and Pattern Recognition · Computer Science 2021-12-17 Jie Qin , Jie Wu , Xuefeng Xiao , Lujun Li , Xingang Wang

Recent mainstream weakly-supervised semantic segmentation (WSSS) approaches mainly relies on image-level classification learning, which has limited representation capacity. In this paper, we propose a novel semantic learning based…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 Junliang Chen , Xiaodong Zhao , Minmin Liu , Linlin Shen

The recent emerged weakly supervised object localization (WSOL) methods can learn to localize an object in the image only using image-level labels. Previous works endeavor to perceive the interval objects from the small and sparse…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Feifei Shao , Yawei Luo , Li Zhang , Lu Ye , Siliang Tang , Yi Yang , Jun Xiao

Class activation map (CAM) has been widely studied for visual explanation of the internal working mechanism of convolutional neural networks. The key of existing CAM-based methods is to compute effective weights to combine activation maps…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Hui Li , Zihao Li , Rui Ma , Tieru Wu

Weakly Supervised Object Localization (WSOL) allows training deep learning models for classification and localization (LOC) using only global class-level labels. The absence of bounding box (bbox) supervision during training raises…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Shakeeb Murtaza , Soufiane Belharbi , Marco Pedersoli , Eric Granger

Weakly supervised segmentation methods using bounding box annotations focus on obtaining a pixel-level mask from each box containing an object. Existing methods typically depend on a class-agnostic mask generator, which operates on the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-17 Jungbeom Lee , Jihun Yi , Chaehun Shin , Sungroh Yoon

Existing method generates class activation map (CAM) by a set of fixed classes (i.e., using all the classes), while the discriminative cues between class pairs are not considered. Note that activation maps by considering different class…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Fanman Meng , Kaixu Huang , Hongliang Li , Qingbo Wu

Few-shot classification (FSC) is one of the most concerned hot issues in recent years. The general setting consists of two phases: (1) Pre-train a feature extraction model (FEM) with base data (has large amounts of labeled samples). (2) Use…

Computer Vision and Pattern Recognition · Computer Science 2021-09-08 Shuai Shao , Lei Xing , Yixin Chen , Yan-Jiang Wang , Bao-Di Liu , Yicong Zhou