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Image classifiers are information-discarding machines, by design. Yet, how these models discard information remains mysterious. We hypothesize that one way for image classifiers to reach high accuracy is to first zoom to the most…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Mohammad Reza Taesiri , Giang Nguyen , Sarra Habchi , Cor-Paul Bezemer , Anh Nguyen

Deep neural networks for video classification, just like image classification networks, may be subjected to adversarial manipulation. The main difference between image classifiers and video classifiers is that the latter usually use…

Machine Learning · Computer Science 2021-06-08 Roi Pony , Itay Naeh , Shie Mannor

Neural networks trained on datasets such as ImageNet have led to major advances in visual object classification. One obstacle that prevents networks from reasoning more deeply about complex scenes and situations, and from integrating visual…

Just like many other topics in computer vision, image classification has achieved significant progress recently by using deep-learning neural networks, especially the Convolutional Neural Networks (CNN). Most of the existing works are…

Computer Vision and Pattern Recognition · Computer Science 2018-10-15 Yanting Pei , Yaping Huang , Qi Zou , Hao Zang , Xingyuan Zhang , Song Wang

The learning of hierarchical representations for image classification has experienced an impressive series of successes due in part to the availability of large-scale labeled data for training. On the other hand, the trained classifiers…

Machine Learning · Computer Science 2020-02-26 Haotao Wang , Tianlong Chen , Zhangyang Wang , Kede Ma

With the great capabilities of deep classifiers for radar data processing come the risks of learning dataset-specific features that do not generalize well. In this work, the robustness of two deep convolutional architectures, trained and…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Mikolaj Czerkawski , Carmine Clemente , Craig Michie , Christos Tachtatzis

Traditionally, vision models have predominantly relied on spatial features extracted from static images, deviating from the continuous stream of spatiotemporal features processed by the brain in natural vision. While numerous…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Amir Hosein Fadaei , Mohammad-Reza A. Dehaqani

A recently-proposed technique called self-adaptive training augments modern neural networks by allowing them to adjust training labels on the fly, to avoid overfitting to samples that may be mislabeled or otherwise non-representative. By…

Machine Learning · Computer Science 2020-06-16 Daniel Chiu , Franklyn Wang , Scott Duke Kominers

In image classification tasks, deep learning models are vulnerable to image distortions i.e. their accuracy significantly drops if the input images are distorted. An image-classifier is considered "reliable" if its accuracy on distorted…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Dang Nguyen , Sunil Gupta , Kien Do , Svetha Venkatesh

Over the last decade, the development of deep image classification networks has mostly been driven by the search for the best performance in terms of classification accuracy on standardized benchmarks like ImageNet. More recently, this…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Kalun Ho , Franz-Josef Pfreundt , Janis Keuper , Margret Keuper

Temporal realism remains a central weakness of current generative video models, as most evaluation metrics prioritize spatial appearance and offer limited sensitivity to motion. We introduce a scalable, model-agnostic framework that…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Mert Onur Cakiroglu , Idil Bilge Altun , Zhihe Lu , Mehmet Dalkilic , Hasan Kurban

We conduct an in-depth exploration of different strategies for doing event detection in videos using convolutional neural networks (CNNs) trained for image classification. We study different ways of performing spatial and temporal pooling,…

Computer Vision and Pattern Recognition · Computer Science 2015-05-11 Shengxin Zha , Florian Luisier , Walter Andrews , Nitish Srivastava , Ruslan Salakhutdinov

One of the major challenges in the field of computer vision especially for detection, segmentation, recognition, monitoring, and automated solutions, is the quality of images. Image degradation, often caused by factors such as rain, fog,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Muhammad Awais Amin , Adama Ilboudo , Abdul Samad bin Shahid , Amjad Ali , Waqas Haider Khan Bangyal

We address the problem of temporal localization of repetitive activities in a video, i.e., the problem of identifying all segments of a video that contain some sort of repetitive or periodic motion. To do so, the proposed method represents…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Giorgos Karvounas , Iason Oikonomidis , Antonis Argyros

Image retrieval can be formulated as a ranking problem where the goal is to order database images by decreasing similarity to the query. Recent deep models for image retrieval have outperformed traditional methods by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Jerome Revaud , Jon Almazan , Rafael Sampaio de Rezende , Cesar Roberto de Souza

Visual representations underlie object recognition tasks, but they often contain both robust and non-robust features. Our main observation is that image classifiers may perform poorly on out-of-distribution samples because spurious…

Computer Vision and Pattern Recognition · Computer Science 2022-04-27 Chengzhi Mao , Kevin Xia , James Wang , Hao Wang , Junfeng Yang , Elias Bareinboim , Carl Vondrick

We cannot guarantee that training datasets are representative of the distribution of inputs that will be encountered during deployment. So we must have confidence that our models do not over-rely on this assumption. To this end, we…

Computer Vision and Pattern Recognition · Computer Science 2020-10-26 Isaac Dunn , Laura Hanu , Hadrien Pouget , Daniel Kroening , Tom Melham

We propose a general framework for self-supervised learning of transferable visual representations based on Video-Induced Visual Invariances (VIVI). We consider the implicit hierarchy present in the videos and make use of (i) frame-level…

Computer Vision and Pattern Recognition · Computer Science 2020-04-03 Michael Tschannen , Josip Djolonga , Marvin Ritter , Aravindh Mahendran , Xiaohua Zhai , Neil Houlsby , Sylvain Gelly , Mario Lucic

Deep learning models learn to fit training data while they are highly expected to generalize well to testing data. Most works aim at finding such models by creatively designing architectures and fine-tuning parameters. To adapt to…

Computer Vision and Pattern Recognition · Computer Science 2018-09-10 Tianyang Wang , Jun Huan , Bo Li

Image blur and image noise are common distortions during image acquisition. In this paper, we systematically study the effect of image distortions on the deep neural network (DNN) image classifiers. First, we examine the DNN classifier…

Computer Vision and Pattern Recognition · Computer Science 2017-01-10 Yiren Zhou , Sibo Song , Ngai-Man Cheung