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Abhishek Aich

7 accepted papers

2025

Progressive Token Length Scaling in Transformer Encoders for Efficient Universal Segmentation

ICLR 2025poster

A powerful architecture for universal segmentation relies on transformers that encode multi-scale image features and decode object queries into mask predictions. With efficiency being a high priority for scaling such models, we observed that the state-of-the-art method Mask2Former uses \~50% of its…

2025

iFinder: Structured Zero-Shot Vision-Based LLM Grounding for Dash-Cam Video Reasoning

NeurIPS 2025poster

Grounding large language models (LLMs) in domain-specific tasks like post-hoc dash-cam driving video analysis is challenging due to their general-purpose training and lack of structured inductive biases. As vision is often the sole modality available for such analysis (i.e., no LiDAR, GPS, etc.), ex…

Cited by 0SourceScholar
2023

Efficient Controllable Multi-Task Architectures

ICCV 2023poster

We aim to train a multi-task model such that users can adjust the desired compute budget and relative importance of task performances after deployment, without retraining. This enables optimizing performance for dynamically varying user needs, without heavy computational overhead to train and save m…

Cited by 6PDFScholar
2022

GAMA: Generative Adversarial Multi-Object Scene Attacks

NeurIPS 2022accept

The majority of methods for crafting adversarial attacks have focused on scenes with a single dominant object (e.g., images from ImageNet). On the other hand, natural scenes include multiple dominant objects that are semantically related. Thus, it is crucial to explore designing attack strategies th…

2021

Adversarial Attacks on Black Box Video Classifiers: Leveraging the Power of Geometric Transformations

NeurIPS 2021poster

When compared to the image classification models, black-box adversarial attacks against video classification models have been largely understudied. This could be possible because, with video, the temporal dimension poses significant additional challenges in gradient estimation. Query-efficient black…

2021

Spatio-Temporal Representation Factorization for Video-Based Person Re-Identification

ICCV 2021poster

Despite much recent progress in video-based person re-identification (re-ID), the current state-of-the-art still suffers from common real-world challenges such as appearance similarity among various people, occlusions, and frame misalignment. To alleviate these problems, we propose Spatio-Temporal R…

Cited by 93PDFScholar
2020

Non-Adversarial Video Synthesis With Learned Priors

CVPR 2020poster

Most of the existing works in video synthesis focus on generating videos using adversarial learning. Despite their success, these methods often require input reference frame or fail to generate diverse videos from the given data distribution, with little to no uniformity in the quality of videos tha…

Cited by 24PDFcodeScholar