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This work addresses how to efficiently classify challenging histopathology images, such as gigapixel whole-slide images for cancer diagnostics with image-level annotation. We use images with annotated tumor regions to identify a set of…

Image and Video Processing · Electrical Eng. & Systems 2024-09-24 Mohammad Iqbal Nouyed , Mary-Anne Hartley , Gianfranco Doretto , Donald A. Adjeroh

Today's state-of-the-art image classifiers fail to correctly classify carefully manipulated adversarial images. In this work, we develop a new, localized adversarial attack that generates adversarial examples by imperceptibly altering the…

Machine Learning · Computer Science 2019-09-12 Eitan Rothberg , Tingting Chen , Luo Jie , Hao Ji

Assessing the robustness of multimodal models against adversarial examples is an important aspect for the safety of its users. We craft L0-norm perturbation attacks on the preprocessed input images. We launch them in a black-box setup…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Cristian-Alexandru Botocan , Raphael Meier , Ljiljana Dolamic

Cellular and molecular imaging techniques and models have been developed to characterize single stages of viral proliferation after focal infection of cells in vitro. The fast and automatic classification of cell imaging data may prove…

Computer Vision and Pattern Recognition · Computer Science 2020-11-11 Birgitta Dresp-Langley , John M. Wandeto

Image downscaling is one of the widely used operations in image processing and computer graphics. It was recently demonstrated in the literature that kernel-based convolutional filters could be modified to develop efficient image…

Image and Video Processing · Electrical Eng. & Systems 2023-01-18 Sanjay Ghosh , Arpan Garai

Typographic attacks exploit multi-modal systems by injecting text into images, leading to targeted misclassifications, malicious content generation and even Vision-Language Model jailbreaks. In this work, we analyze how CLIP vision encoders…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Lorenz Hufe , Constantin Venhoff , Erblina Purelku , Maximilian Dreyer , Sebastian Lapuschkin , Wojciech Samek

Conventional adversarial training methods using attacks that manipulate the pixel value directly and individually, leading to models that are less robust in face of spatial transformation-based attacks. In this paper, we propose a joint…

Computer Vision and Pattern Recognition · Computer Science 2019-08-01 Haichao Zhang , Jianyu Wang

Motion blur, out of focus, insufficient spatial resolution, lossy compression and many other factors can all cause an image to have poor quality. However, image quality is a largely ignored issue in traditional pattern recognition…

Computer Vision and Pattern Recognition · Computer Science 2018-01-22 Fei Yang , Qian Zhang , Miaohui Wang , Guoping Qiu

Artificial intelligence (AI) has been a topic of major research for many years. Especially, with the emergence of deep neural network (DNN), these studies have been tremendously successful. Today machines are capable of making faster, more…

Computer Vision and Pattern Recognition · Computer Science 2020-01-28 Ibrahim Yilmaz

Adversarial attacks modify images with perturbations that change the prediction of classifiers. These modified images, known as adversarial examples, expose the vulnerabilities of deep neural network classifiers. In this paper, we…

Machine Learning · Computer Science 2022-06-03 Chau Yi Li , Ricardo Sánchez-Matilla , Ali Shahin Shamsabadi , Riccardo Mazzon , Andrea Cavallaro

This work does not introduce a new method. Instead, we present an interesting finding that questions the necessity of the inductive bias of locality in modern computer vision architectures. Concretely, we find that vanilla Transformers can…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Duy-Kien Nguyen , Mahmoud Assran , Unnat Jain , Martin R. Oswald , Cees G. M. Snoek , Xinlei Chen

This work presents Z-Mask, a robust and effective strategy to improve the adversarial robustness of convolutional networks against physically-realizable adversarial attacks. The presented defense relies on specific Z-score analysis…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Giulio Rossolini , Federico Nesti , Fabio Brau , Alessandro Biondi , Giorgio Buttazzo

Recently, the vulnerability of deep image classification models to adversarial attacks has been investigated. However, such an issue has not been thoroughly studied for image-to-image tasks that take an input image and generate an output…

Computer Vision and Pattern Recognition · Computer Science 2022-06-29 Jun-Ho Choi , Huan Zhang , Jun-Hyuk Kim , Cho-Jui Hsieh , Jong-Seok Lee

As an essential processing step in computer vision applications, image resizing or scaling, more specifically downsampling, has to be applied before feeding a normally large image into a convolutional neural network (CNN) model because CNN…

Computer Vision and Pattern Recognition · Computer Science 2020-10-09 Bedeuro Kim , Alsharif Abuadbba , Yansong Gao , Yifeng Zheng , Muhammad Ejaz Ahmed , Hyoungshick Kim , Surya Nepal

Clique-width is one of the graph complexity measures leading to polynomial special-case algorithms for generally NP-complete problems, e.g. graph colourability. The best two currently known algorithms for verifying c-colourability of graphs…

Computational Complexity · Computer Science 2021-08-13 Bruno Courcelle , Irène Durand , Michael Raskin

Deep learning has proven to be more effective than other methods in medical image analysis, including the seemingly simple but challenging task of segmenting individual cells, an essential step for many biological studies. Comparative…

Image and Video Processing · Electrical Eng. & Systems 2023-11-07 Valentina Vadori , Antonella Peruffo , Jean-Marie Graïc , Livio Finos , Livio Corain , Enrico Grisan

Contrastive learning and self-supervised techniques have gained prevalence in computer vision for the past few years. It is essential for medical image analysis, which is often notorious for its lack of annotations. Most existing…

Image and Video Processing · Electrical Eng. & Systems 2022-03-07 Jun Li , Quan Quan , S. Kevin Zhou

Adversarial patch-based attacks aim to fool a neural network with an intentionally generated noise, which is concentrated in a particular region of an input image. In this work, we perform an in-depth analysis of different patch generation…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Svetlana Pavlitskaya , Jonas Hendl , Sebastian Kleim , Leopold Müller , Fabian Wylczoch , J. Marius Zöllner

Patch-based attacks introduce a perceptible but localized change to the input that induces misclassification. A limitation of current patch-based black-box attacks is that they perform poorly for targeted attacks, and even for the less…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Chenglin Yang , Adam Kortylewski , Cihang Xie , Yinzhi Cao , Alan Yuille

Certifiably robust defenses against adversarial patches for image classifiers ensure correct prediction against any changes to a constrained neighborhood of pixels. PatchCleanser arXiv:2108.09135 [cs.CV], the state-of-the-art certified…

Computer Vision and Pattern Recognition · Computer Science 2023-06-23 Aniruddha Saha , Shuhua Yu , Arash Norouzzadeh , Wan-Yi Lin , Chaithanya Kumar Mummadi