Search Results for author: Amitangshu Mukherjee

Found 4 papers, 1 papers with code

On Inherent Adversarial Robustness of Active Vision Systems

no code implementations29 Mar 2024 Amitangshu Mukherjee, Timur Ibrayev, Kaushik Roy

Current Deep Neural Networks are vulnerable to adversarial examples, which alter their predictions by adding carefully crafted noise.

Adversarial Robustness Foveation

Towards Two-Stream Foveation-based Active Vision Learning

no code implementations24 Mar 2024 Timur Ibrayev, Amitangshu Mukherjee, Sai Aparna Aketi, Kaushik Roy

Specifically, the proposed framework models the following mechanisms: 1) ventral (what) stream focusing on the input regions perceived by the fovea part of an eye (foveation), 2) dorsal (where) stream providing visual guidance, and 3) iterative processing of the two streams to calibrate visual focus and process the sequence of focused image patches.

Foveation Object +1

Encoding Hierarchical Information in Neural Networks helps in Subpopulation Shift

no code implementations20 Dec 2021 Amitangshu Mukherjee, Isha Garg, Kaushik Roy

We show that learning in this structured hierarchical manner results in networks that are more robust against subpopulation shifts, with an improvement up to 3\% in terms of accuracy and up to 11\% in terms of graphical distance over standard models on subpopulation shift benchmarks.

Image Classification

Semantic Adversarial Attacks: Parametric Transformations That Fool Deep Classifiers

1 code implementation ICCV 2019 Ameya Joshi, Amitangshu Mukherjee, Soumik Sarkar, Chinmay Hegde

We propose a novel approach to generate such `semantic' adversarial examples by optimizing a particular adversarial loss over the range-space of a parametric conditional generative model.

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