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Journal : Nuansa Informatika

High Performance Yolov4 with Different Optimizers and Backbones to Determine Distance Irma Amelia Dewi; Mikael Prapaskalis G; Muhammad Ichwan
NUANSA INFORMATIKA Vol. 20 No. 1 (2026): Nuansa Informatika 20.1 Januari 2026
Publisher : FKOM UNIKU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25134/ilkom.v20i1.533

Abstract

Monitoring the distance between individuals in public spaces remains relevant for crowd management, operational safety, and risk mitigation in public service. Manual inspections are difficult to carry out consistently and in real time, thus requiring an automated machine vision-based system. This research proposes a safe distance monitoring pipeline that detects humans, calculates the proximity between individuals. Human detection is performed with YOLOv4 and the CSPResNeXt50 backbone, then the center of the bounding box is used as a position representation. The distance between centroids is calculated using Euclidean Distance and calibrated based on camera parameters, thus that it can be mapped to distance units. To obtain a stable training configuration, two optimizers (Adam and SGD) are compared at two learning rates (1E-2 and 1E-3). Test results show that Adam with a learning rate of 1E-3 provides the best performance, achieving 96% object detection accuracy. The distance calculation module achieves 90% accuracy in determining the actual and predicted distances in optimal camera installation scenarios, with an average processing speed of 60 fps. These findings demonstrate a fast and practical approach for camera-based public space safety. Additionally, the backbone comparison shows that CSPResNeXt50 is slightly superior to DarkNet50, making it suitable for lightweight implementation on edge devices in real-time.
Co-Authors Adi, Firma Firmansyah Adli, Muhammad Arkan Agus Salim Akram, M. Azriel Alamsyah, Yogi ALFARISYI, SALMAN FATHUL Ambarsari, Dewi Amelia, Irma Anggriawan, Mochamad Angga Aprianty, Henny Ardinata, Dedi - Aritonang, Evawany Y. Barmawi, Mira Musrini Bintang, Siti Sarah Bintang Sarah BURHAN FAJRIANSYAH, BURHAN Chazar, Chalifa Dani, Rahiman Dewi Rosmala, Dewi Dewi, Hartami DEWI, IRMA AMELIA Dewi, Irma Amelia Dhuha, Muhammad Hikmal Dina Budhi Utami Dina Budhi Utami, Dina Budhi Djamaa, Wahjuny Erawan, Putu Eka F H, Ghassan Nur Fahrezi Maulana, Reyhan Ghairrahmat, Dhimas Aji HADI, IHSAN SAIFUL Hanif, Muhammad Adnan HARI PURNOMO Helmaputra, Aldri HERU PURNAWAN Heru Santosa I Ketut Suada Imelda, Fatwa Irawan, Bambang Riyadi IRMA AMELIA DEWI Irwan, Yusril Jasman Pardede Jusuf, Nelva Karmila Kusumawati, R. Lia Lia Budi Tristanti Lubis, Nenni Dwi Aprianti Lukito, Rara Restu Lumbanraja, Sarma N. Mahyuddin K. M Nasution Marcella, Risha Miftahuddin, Yusup Miftahuddin, Yusup Mikael Prapaskalis G Milda Gustiana Husada Muhammad Rizka, Muhammad Mulyadi Mulyadi Mustafa, Dody Mutammimul Ula Nani Yuniar Nugraha, Priyandhika Adi Nurhasanah, Youllia Indrawaty Nurwiani, Nurwiani Octavia, Nur Afni Heryanti Pahlevi, Andhika Permatasari, Ranti Putra, Imam Budi Putri Chairani Eyanoer, Putri Chairani Rahmiwita, Rahmiwita Ramadani, Andi Muchlas Ramadhan, Fikri Ramadhani, Tri Sartika RATNA SUSANA Reza Malik, M. Fatir RR. Ella Evrita Hestiandari S, Zeni Muharom Sa'adah, Umi Salis, Witri Aini Salsabilla, Nadiati SAVERO AL PHARD, SAVERO AL Selviana, Zahra Cahya Dewi Siahaan, Andre MP. Siti Nur Faridah Soekoco, Asril Senoaji SUMANTRI, HANIFAH Suryananda, Ignatius Adiandra Syafiudin, Arief Tobing, Immanuel DL. Tri Andrianto, Yoga Fathur Triyanto, Deni Utama, Putri Wahdiah Utami, Irna Rahma Wulandara, Ambar Yahwardiah Siregar