Vahid Hajihashemi

14 papers B 1C 1Journal 10Unranked 2
YearRankTypeTitle / Venue / Authors
2025 J jnl
Novel sound event and sound activity detection framework based on intrinsic mode functions and deep learning.
Multim. Tools Appl.
Vahid Hajihashemi, Abdorreza Alavi Gharahbagh, José J. M. Machado, João Manuel R. S. Tavares
2024 J jnl
A Hybrid Hierarchical Mathematical Heuristic Solution of Sparse Algebraic Equations in Sentiment Analysis.
Inf.
Maryam Jalali, Morteza Zahedi, Abdorreza Alavi Gharahbagh, Vahid Hajihashemi, José J. M. Machado, João Manuel R. S. Tavares
2024 J jnl
Hybrid time-spatial video saliency detection method to enhance human action recognition systems.
Multim. Tools Appl.
Abdorreza Alavi Gharahbagh, Vahid Hajihashemi, Marta Campos Ferreira, José J. M. Machado, João Manuel R. S. Tavares
2023 J jnl
A Hierarchical modified AV1 codec for compression cartesian form of holograms in holo and object planes.
Multim. Tools Appl.
Vahid Hajihashemi, Abdorreza Alavi Gharahbagh, Azam Bastanfard, Hugo S. Oliveira, Gonçalo Almeida, Zhen Ma, João Manuel R. S. Tavares
2023 — conf
Audio Event Detection Based on Cross Correlation in Selected Frequency Bands of Spectrogram.
WorldCIST (4)
Vahid Hajihashemi, Abdorreza Alavi Gharahbagh, José J. M. Machado, João Manuel R. S. Tavares
2023 — conf
Camera Movement Cancellation in Video Using Phase Congruency and an FFT-Based Technique.
WorldCIST (4)
Abdorreza Alavi Gharahbagh, Vahid Hajihashemi, José J. M. Machado, João Manuel R. S. Tavares
2023 J jnl
Deep Learning Approach for Human Action Recognition Using a Time Saliency Map Based on Motion Features Considering Camera Movement and Shot in Video Image Sequences.
Inf.
Abdorreza Alavi Gharahbagh, Vahid Hajihashemi, José J. M. Machado, João Manuel R. S. Tavares
2022 J jnl
Binaural Acoustic Scene Classification Using Wavelet Scattering, Parallel Ensemble Classifiers and Nonlinear Fusion.
Sensors
Vahid Hajihashemi, Abdorreza Alavi Gharahbagh, Pedro Miguel Cruz, Marta Campos Ferreira, José J. M. Machado, João Manuel R. S. Tavares
2022 J jnl
Classification of Heart Sounds Using Chaogram Transform and Deep Convolutional Neural Network Transfer Learning.
Sensors
Ali Harimi, Yahya Majd, Abdorreza Alavi Gharahbagh, Vahid Hajihashemi, Zeynab Esmaileyan, José J. M. Machado, João Manuel R. S. Tavares
2022 J jnl
Deep anomaly detection in hyperspectral images based on membership maps and object area filtering.
Expert Syst. Appl.
Mahdi Yousefan, Hamid Esmaeili Najafabadi, Hossein Amirkhani, Henry Leung, Vahid Hajihashemi
2021 J jnl
A novel high-efficiency holography image compression method, based on HEVC, Wavelet, and nearest-neighbor interpolation.
Multim. Tools Appl.
Vahid Hajihashemi, Hamid Esmaeili Najafabadi, Abdorreza Alavi Gharahbagh, Henry Leung, Mahdi Yousefan, João Manuel R. S. Tavares
2021 C conf
Novel Time-Frequency Based Scheme for Detecting Sound Events from Sound Background in Audio Segments.
CIARP
Vahid Hajihashemi, Abdorreza Alavi Gharahbagh, Hugo S. Oliveira, Pedro Miguel Cruz, João Manuel R. S. Tavares
2019 J jnl
Hybrid Algorithms of Whale optimization algorithm and k-nearest neighbor to Predict the liver disease.
EAI Endorsed Trans. Context aware Syst. Appl.
Vahid Hajihashemi, Zeinab Hassani, Iman Sahraei Dehmajnoonie, Keivan Borna
2019 B conf
Perceptual evaluation of speckle noise reduction techniques for phase shifting holograms.
QoMEX
Elsa Susana Reis Fonseca, Paulo Torrão Fiadeiro, Vahid Hajihashemi, Marco V. Bernardo, António M. G. Pinheiro, Manuela Pereira