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Journal : Engineering, Mathematics and Computer Science Journal (EMACS)

Low-Resolution Face Recognition: A Review of Methods and Data Utomo, Yesun; Kelvin
Engineering, MAthematics and Computer Science Journal (EMACS) Vol. 7 No. 3 (2025): EMACS
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/emacsjournal.v7i3.14082

Abstract

This paper provides a review of previous studies in Low-Resolution Face Recognition (LRFR), specifically focusing on cross-resolution Face Recognition (FR) methods. While state-of-the-art deep learning FR systems achieve high accuracy on high-resolution (HR) images, they are generally unsuitable for low-resolution (LR) images frequently encountered in applications like surveillance systems, where faces often have low pixel counts due to capture conditions. Cross-resolution FR, which compares an HR image with an LR image, presents a significant challenge due to the distinct visual properties of images at different resolutions. The paper discusses two primary approaches to address this problem: super-resolution (SR), which is a transformative method that aims to construct HR images from LR ones, and unified feature space (UFS), a non-transformative method that maps facial features from varying resolutions into a shared feature space. This work summarizes both SR and UFS methods. Based on the review, the paper concludes that non-transformative (UFS) methods are more suitable for future directions. This recommendation is driven by their lower computational power requirements, proven effectiveness in real-world implementations such as mobile devices and drones, and alignment with current technological trends. The paper also emphasizes the need for further research using real or natural LR face images to identify degradation patterns and compare results between real and artificially generated LR images.
Co-Authors Andarini, Risma Andreas Banyuaji Nugroho Andrew Law Andri Suhartono Anggriawan, Armando Edo Anita Anna Pudianti Apriansyah, Miko Ardhi, Setya Ardiansyah, Rano Aurelia Tita Kusumajati Badruzzaman, Falah Baehaqi Cantona, Erik Christin Christovany Clorina, Jesslyn Cuandra, Fendy Dhevin Ghoward Efriyenti, Dian Eliyah Yuliana, Pram Elvanny Myori, Dwiprima Endah Setyaningsih Ery Dewayani Evi Silvana Muchsinati Fahrur Rozzi Nasution Fanny Violetania Ang Faradina, Nevi Ferdiansyah Fiona Fivia Eliza Ghoward, Dhevin Golan Hasan, Golan Hadian Satria Utama halim, cheviria Heru Kurniawan Hikmah Jenny Kartika Dewi Joey Joosten Joosten Josline Karinnia Kelly Lim Kusumajati, Aurelia Tita Laidy, Yenny Lawrenta, Mattew Lim, Kelly Limgestu, Rico LINDAWATI Lucia Asdra, Rurdwiarti Manatap Dolok Lauro, Manatap Dolok Marheni, Dewi Khornida Maria Beatrix Marthin, Ricko Mela Novita Rizki Nopriadi Nopriadi Notonegoro, Hartoyo Nugroho, Andreas Banyuaji Permata, Nadiva Surya Philisya Salim Pram Eliyah Yuliana Putri, Vasthi Gianni Agmi Rafida Khairani Rebecca Friska Rendy Sarudin Rianto, Louis Richard Raymond Rio Fernando Rorendry Rosilawati, Hana Rosmita Rasyid Rurdwiarti Lucia Asdra Sara, Dwi Saragih, Yuni Marlina Seriana Setya Ardhi Sharon Sinaga, Frans Mikael Sinambela, Fitriana Aidnilla Sisca Aulia Sri Deviyanti, I Gusti Ayu SRI RAHAYU Steven Suhatati Tjandra Sulyyani Tony Tony TRI SUTRISNO Utomo, Yesun Valentini, Cynthia Valesia tjuang Vasthi Gianni Agmi Putri Vebri Fransiska Vincentia Reni Vitasurya Wahyudi, Haris Wijayadi, Linda Julianti Winardi, Sunaryo Yenny Laidy Yohanes Calvinus Zai, Immanuel Zyad Rusdi