Search Results for author: Aparna Bharati

Found 15 papers, 6 papers with code

Learn "No" to Say "Yes" Better: Improving Vision-Language Models via Negations

1 code implementation29 Mar 2024 Jaisidh Singh, Ishaan Shrivastava, Mayank Vatsa, Richa Singh, Aparna Bharati

Using CC-Neg along with modifications to the contrastive loss of CLIP, our proposed CoN-CLIP framework, has an improved understanding of negations.

Image Classification Zero-Shot Image Classification

Exploring Saliency Bias in Manipulation Detection

no code implementations12 Feb 2024 Joshua Krinsky, Alan Bettis, Qiuyu Tang, Daniel Moreira, Aparna Bharati

The social media-fuelled explosion of fake news and misinformation supported by tampered images has led to growth in the development of models and datasets for image manipulation detection.

Image Manipulation Image Manipulation Detection +1

Subjective Face Transform using Human First Impressions

1 code implementation27 Sep 2023 Chaitanya Roygaga, Joshua Krinsky, Kai Zhang, Kenny Kwok, Aparna Bharati

Humans tend to form quick subjective first impressions of non-physical attributes when seeing someone's face, such as perceived trustworthiness or attractiveness.

Attribute

A Computer Vision Method for Estimating Velocity from Jumps

no code implementations9 Dec 2022 Soumyadip Roy, Chaitanya Roygaga, Nathaniel Blanchard, Aparna Bharati

Athletes routinely undergo fitness evaluations to evaluate their training progress.

APE-V: Athlete Performance Evaluation using Video

1 code implementation IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) Workshops 2022 Chaitanya Roygaga, Dhruva Patil, Michael Boyle, William Pickard, Raoul Reiser, Aparna Bharati, Nathaniel Blanchard

However, athlete error calls into question 46. 2% of movements — in these cases, an expert assessor would have the athlete redo the movement to eliminate the error.

Learning Transformation-Aware Embeddings for Image Forensics

no code implementations13 Jan 2020 Aparna Bharati, Daniel Moreira, Patrick Flynn, Anderson Rocha, Kevin Bowyer, Walter Scheirer

To establish the efficacy of the proposed approach, comparisons with state-of-the-art handcrafted and deep learning-based descriptors, and image matching approaches are made.

Image Forensics Object Recognition

Dynamic Spatial Verification for Large-Scale Object-Level Image Retrieval

no code implementations24 Mar 2019 Joel Brogan, Aparna Bharati, Daniel Moreira, Kevin Bowyer, Patrick Flynn, Anderson Rocha, Walter Scheirer

Images from social media can reflect diverse viewpoints, heated arguments, and expressions of creativity, adding new complexity to retrieval tasks.

Clustering Content-Based Image Retrieval +3

Image Provenance Analysis at Scale

no code implementations19 Jan 2018 Daniel Moreira, Aparna Bharati, Joel Brogan, Allan Pinto, Michael Parowski, Kevin W. Bowyer, Patrick J. Flynn, Anderson Rocha, Walter J. Scheirer

Given a large corpus of images and a query image, an interesting further step is to retrieve the set of original images whose content is present in the query image, as well as the detailed sequences of transformations that yield the query image given the original images.

Authorship Verification Fact Checking

Demography-based Facial Retouching Detection using Subclass Supervised Sparse Autoencoder

no code implementations22 Sep 2017 Aparna Bharati, Mayank Vatsa, Richa Singh, Kevin W. Bowyer, Xin Tong

However, previous work on this topic has not considered whether or how accuracy of retouching detection varies with the demography of face images.

Provenance Filtering for Multimedia Phylogeny

1 code implementation1 Jun 2017 Allan Pinto, Daniel Moreira, Aparna Bharati, Joel Brogan, Kevin Bowyer, Patrick Flynn, Walter Scheirer, Anderson Rocha

Departing from traditional digital forensics modeling, which seeks to analyze single objects in isolation, multimedia phylogeny analyzes the evolutionary processes that influence digital objects and collections over time.

U-Phylogeny: Undirected Provenance Graph Construction in the Wild

1 code implementation31 May 2017 Aparna Bharati, Daniel Moreira, Allan Pinto, Joel Brogan, Kevin Bowyer, Patrick Flynn, Walter Scheirer, Anderson Rocha

Deriving relationships between images and tracing back their history of modifications are at the core of Multimedia Phylogeny solutions, which aim to combat misinformation through doctored visual media.

graph construction Misinformation

To Frontalize or Not To Frontalize: Do We Really Need Elaborate Pre-processing To Improve Face Recognition?

1 code implementation16 Oct 2016 Sandipan Banerjee, Joel Brogan, Janez Krizaj, Aparna Bharati, Brandon RichardWebster, Vitomir Struc, Patrick Flynn, Walter Scheirer

If a CNN is intended to tolerate facial pose, then we face an important question: should this training data be diverse in its pose distribution, or should face images be normalized to a single pose in a pre-processing step?

Face Recognition

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