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Nina Shvetsova

9 accepted papers

2025

Unbiasing through Textual Descriptions: Mitigating Representation Bias in Video Benchmarks

CVPR 2025poster

We propose a new "Unbiased through Textual Description (UTD)" video benchmark based on unbiased subsets of existing video classification and retrieval datasets to enable a more robust assessment of video understanding capabilities. Namely, we tackle the problem that current video benchmarks may suff…

Cited by 0SourcePDFScholar
2025

VideoGEM: Training-free Action Grounding in Videos

CVPR 2025poster

Vision-language foundation models have shown impressive capabilities across various zero-shot tasks, including training-free localization and grounding, primarily focusing on localizing objects in images. However, leveraging those capabilities to localize actions and events in videos is challenging,…

2024

What When and Where? Self-Supervised Spatio-Temporal Grounding in Untrimmed Multi-Action Videos from Narrated Instructions

CVPR 2024poster

Spatio-temporal grounding describes the task of localizing events in space and time e.g. in video data based on verbal descriptions only. Models for this task are usually trained with human-annotated sentences and bounding box supervision. This work addresses this task from a multimodal supervision…

2023

C2KD: Cross-Lingual Cross-Modal Knowledge Distillation for Multilingual Text-Video Retrieval

ICASSP 2023accepted

Multilingual text-video retrieval methods have improved significantly in recent years, but the performance for languages other than English still lags. We propose a Cross-Lingual Cross-Modal Knowledge Distillation method to improve multilingual text-video retrieval. Inspired by the fact that English…

Cited by 0SourceScholar
2023

In-Style: Bridging Text and Uncurated Videos with Style Transfer for Text-Video Retrieval

ICCV 2023poster

Large-scale noisy web image-text datasets have been proven to be efficient for learning robust vision-language models. However, to transfer them to the task of video retrieval, models still need to be fine-tuned on hand-curated paired text-video data to adapt to the diverse styles of video descripti…

Cited by 4PDFcodeScholar
2023

Learning by Sorting: Self-supervised Learning with Group Ordering Constraints

ICCV 2023poster

Contrastive learning has become an important tool in learning representations from unlabeled data mainly relying on the idea of minimizing distance between positive data pairs, e.g., views from the same images, and maximizing distance between negative data pairs, e.g., views from different images. T…

Cited by 12PDFcodeScholar
2023

MAtch, eXpand and Improve: Unsupervised Finetuning for Zero-Shot Action Recognition with Language Knowledge

ICCV 2023poster

Large scale Vision-Language (VL) models have shown tremendous success in aligning representations between visual and text modalities. This enables remarkable progress in zero-shot recognition, image generation & editing, and many other exciting tasks. However, VL models tend to over-represent object…

Cited by 50PDFcodeScholar
2023

Preserving Modality Structure Improves Multi-Modal Learning

ICCV 2023poster

Self-supervised learning on large-scale multi-modal datasets allows learning semantically meaningful embeddings in a joint multi-modal representation space without relying on human annotations. These joint embeddings enable zero-shot cross-modal tasks like retrieval and classification. However, thes…

Cited by 6PDFcodeScholar
2022

Everything at Once - Multi-Modal Fusion Transformer for Video Retrieval

CVPR 2022poster

Multi-modal learning from video data has seen increased attention recently as it allows training of semantically meaningful embeddings without human annotation, enabling tasks like zero-shot retrieval and action localization. In this work, we present a multi-modal, modality agnostic fusion transform…

Cited by 169PDFcodeScholar