Search Results for author: Nalini Ratha

Found 11 papers, 2 papers with code

Enhancing Privacy in Face Analytics Using Fully Homomorphic Encryption

no code implementations24 Apr 2024 Bharat Yalavarthi, Arjun Ramesh Kaushik, Arun Ross, Vishnu Boddeti, Nalini Ratha

These features denote embeddings in latent space and are often stored as templates in a face recognition system.

RidgeBase: A Cross-Sensor Multi-Finger Contactless Fingerprint Dataset

1 code implementation9 Jul 2023 Bhavin Jawade, Deen Dayal Mohan, Srirangaraj Setlur, Nalini Ratha, Venu Govindaraju

Contactless fingerprint matching using smartphone cameras can alleviate major challenges of traditional fingerprint systems including hygienic acquisition, portability and presentation attacks.

HEFT: Homomorphically Encrypted Fusion of Biometric Templates

1 code implementation15 Aug 2022 Luke Sperling, Nalini Ratha, Arun Ross, Vishnu Naresh Boddeti

This paper proposes a non-interactive end-to-end solution for secure fusion and matching of biometric templates using fully homomorphic encryption (FHE).

Dimensionality Reduction

Efficient Encrypted Inference on Ensembles of Decision Trees

no code implementations5 Mar 2021 Kanthi Sarpatwar, Karthik Nandakumar, Nalini Ratha, James Rayfield, Karthikeyan Shanmugam, Sharath Pankanti, Roman Vaculin

In this work, we propose a framework to transfer knowledge extracted by complex decision tree ensembles to shallow neural networks (referred to as DTNets) that are highly conducive to encrypted inference.

BIG-bench Machine Learning

Efficient CNN Building Blocks for Encrypted Data

no code implementations30 Jan 2021 Nayna Jain, Karthik Nandakumar, Nalini Ratha, Sharath Pankanti, Uttam Kumar

Using the CKKS scheme available in the open-source HElib library, we show that operational parameters of the chosen FHE scheme such as the degree of the cyclotomic polynomial, depth limitations of the underlying leveled HE scheme, and the computational precision parameters have a major impact on the design of the machine learning model (especially, the choice of the activation function and pooling method).

BIG-bench Machine Learning

Trustworthy AI

no code implementations2 Nov 2020 Richa Singh, Mayank Vatsa, Nalini Ratha

Modern AI systems are reaping the advantage of novel learning methods.

Fairness

Understanding Unequal Gender Classification Accuracy from Face Images

no code implementations30 Nov 2018 Vidya Muthukumar, Tejaswini Pedapati, Nalini Ratha, Prasanna Sattigeri, Chai-Wah Wu, Brian Kingsbury, Abhishek Kumar, Samuel Thomas, Aleksandra Mojsilovic, Kush R. Varshney

Recent work shows unequal performance of commercial face classification services in the gender classification task across intersectional groups defined by skin type and gender.

Classification Gender Classification +1

Recognizing Disguised Faces in the Wild

no code implementations21 Nov 2018 Maneet Singh, Richa Singh, Mayank Vatsa, Nalini Ratha, Rama Chellappa

While upcoming algorithms continue to achieve improved performance, a majority of the face recognition systems are susceptible to failure under disguise variations, one of the most challenging covariate of face recognition.

Disguised Face Verification Face Recognition

Unravelling Robustness of Deep Learning based Face Recognition Against Adversarial Attacks

no code implementations22 Feb 2018 Gaurav Goswami, Nalini Ratha, Akshay Agarwal, Richa Singh, Mayank Vatsa

In this paper, we attempt to unravel three aspects related to the robustness of DNNs for face recognition: (i) assessing the impact of deep architectures for face recognition in terms of vulnerabilities to attacks inspired by commonly observed distortions in the real world that are well handled by shallow learning methods along with learning based adversaries; (ii) detecting the singularities by characterizing abnormal filter response behavior in the hidden layers of deep networks; and (iii) making corrections to the processing pipeline to alleviate the problem.

Face Recognition

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