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Ahmed Abdelkader

5 accepted papers

2026

Mining Attribute Subspaces for Efficient Fine-tuning of 3D Foundation Models

CVPR 2026

With the emergence of 3D foundation models, there is growing interest in fine-tuning them for downstream tasks, where LoRA is the dominant fine-tuning paradigm. As 3D datasets exhibit distinct variations in texture, geometry, camera motion, and lighting, there are interesting fundamental questions:

Cited by 0SourceScholar
2021

The Intrinsic Dimension of Images and Its Impact on Learning

ICLR 2021spotlight

It is widely believed that natural image data exhibits low-dimensional structure despite the high dimensionality of conventional pixel representations. This idea underlies a common intuition for the remarkable success of deep learning in computer vision. In this work, we apply dimension estimation…

2020

Certified Defenses for Adversarial Patches

ICLR 2020poster

Adversarial patch attacks are among one of the most practical threat models against real-world computer vision systems. This paper studies certified and empirical defenses against patch attacks. We begin with a set of experiments showing that most existing defenses, which work by pre-processing inpu…

Cited by 198SourcecodeScholar
2020

Detection as Regression: Certified Object Detection with Median Smoothing

NeurIPS 2020poster

Despite the vulnerability of object detectors to adversarial attacks, very few defenses are known to date. While adversarial training can improve the empirical robustness of image classifiers, a direct extension to object detection is very expensive. This work is motivated by recent progress on cert…

Cited by 80SourcePDFScholar
2020

Headless Horseman: Adversarial Attacks on Transfer Learning Models

ICASSP 2020accepted

Transfer learning facilitates the training of task-specific classifiers using pre-trained models as feature extractors. We present a family of transferable adversarial attacks against such classifiers, generated without access to the classification head; we call these headless attacks. We first demo…

Cited by 0SourceScholar