Search Results for author: Hafiz Imtiaz

Found 10 papers, 3 papers with code

Hybrid Deepfake Image Detection: A Comprehensive Dataset-Driven Approach Integrating Convolutional and Attention Mechanisms with Frequency Domain Features

no code implementations15 Feb 2025 Kafi Anan, Anindya Bhattacharjee, Ashir Intesher, Kaidul Islam, Abrar Assaeem Fuad, Utsab Saha, Hafiz Imtiaz

The 2025 Signal Processing Cup (DFWild-Cup competition) provided a diverse dataset of deepfake images, which are generated from multiple deepfake image generators, for training machine learning model(s) to emphasize the generalization of deepfake detection.

DeepFake Detection Face Swapping

Contextual Checkerboard Denoise -- A Novel Neural Network-Based Approach for Classification-Aware OCT Image Denoising

1 code implementation29 Nov 2024 Md. Touhidul Islam, Md. Abtahi M. Chowdhury, Sumaiya Salekin, Aye T. Maung, Akil A. Taki, Hafiz Imtiaz

In contrast to non-medical image denoising, where enhancing image clarity is the primary goal, medical image denoising warrants preservation of crucial features without introduction of new artifacts.

Diagnostic Image Classification +2

DP-CDA: An Algorithm for Enhanced Privacy Preservation in Dataset Synthesis Through Randomized Mixing

no code implementations25 Nov 2024 Utsab Saha, Tanvir Muntakim Tonoy, Hafiz Imtiaz

To evaluate the effectiveness of DP-CDA, we examine the accuracy of predictive models trained on the synthetic data, which serves as a measure of dataset utility.

Computational Efficiency

Privacy-Preserving Matrix Factorization for Recommendation Systems using Gaussian Mechanism

no code implementations11 Apr 2023 Sohan Salahuddin Mugdho, Hafiz Imtiaz

Building a recommendation system involves analyzing user data, which can potentially leak sensitive information about users.

Privacy Preserving Recommendation Systems

Human Activity Recognition from Wi-Fi CSI Data Using Principal Component-Based Wavelet CNN

no code implementations26 Dec 2022 Ishtiaque Ahmed Showmik, Tahsina Farah Sanam, Hafiz Imtiaz

Human Activity Recognition (HAR) is an emerging technology with several applications in surveillance, security, and healthcare sectors.

Human Activity Recognition

Distributed Differentially Private Computation of Functions with Correlated Noise

2 code implementations22 Apr 2019 Hafiz Imtiaz, Jafar Mohammadi, Anand D. Sarwate

CAPE can be used in conjunction with the functional mechanism for statistical and machine learning optimization problems.

BIG-bench Machine Learning Privacy Preserving

A Face Recognition Scheme using Wavelet Based Dominant Features

no code implementations7 Oct 2011 Hafiz Imtiaz, Shaikh Anowarul Fattah

In this paper, a multi-resolution feature extraction algorithm for face recognition is proposed based on two-dimensional discrete wavelet transform (2D-DWT), which efficiently exploits the local spatial variations in a face image.

Face Recognition

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