Article Per Year (5 Year)
p-Index From 2021 - 2026
3.51
P-Index
This Author published in this journals
All Journal Bianglala Informatika : Jurnal Komputer dan Informatika Akademi Bina Sarana Informatika Yogyakarta Jurnal Sisfokom (Sistem Informasi dan Komputer) RESEARCH : Computer, Information System & Technology Management Buletin Ilmiah Sarjana Teknik Elektro Indonesian Journal of Networking and Security - IJNS SPEED - Sentra Penelitian Engineering dan Edukasi Kontribusi: Jurnal Penelitian dan Pengabdian Kepada Masyarakat Joutica : Journal of Informatic Unisla Nusantara of Engineering (NOE) Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi)
Made Ayu Dusea Widyadara - Universitas Nusantara Kediri, Made Ayu Dusea Widyadara
Teknik Informatika, Fakultas Teknik, Universitas Nusantara PGRI Kediri
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Transportation

Published : 31 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 31 Documents
Search

 1   2   3   4 
Grid-Calibrated Patch Learning for Braille Multi-Character Recognition Widyadara, Made Ayu Dusea; Handayani, Anik Nur; Herwanto, Heru Wahyu; Yu, Tony; Mulya, Marga Asta Jaya
Buletin Ilmiah Sarjana Teknik Elektro Vol. 8 No. 1 (2026): February
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v8i1.15199

Abstract

The approach presents a multi braille character (MBC) recognition system for Indonesian syllablesdesigned to address real-world imaging variations. The proposed framework formulates 105-class visual classification task, where each class represents a two-character Braille unit. This design aims to preserve inter-character spatial relationships and reduce error propagation commonly found in single-character segmentation approaches. A carefully constructed dataset undergoes spatial pre-processing stages, including rotation normalization, grid assignment, and multicell cropping, resulting in uniform 89×89 pixel image patches that ensure geometric consistency across samples. To enhance model generalization under varying illumination conditions, single-dimension photometric augmentation is applied exclusively during training, including brightness (±25%), exposure (±20%), saturation (±40%), and hue (±30%). ResNet-101 is adopted as the backbone architecture based on prior comparative studies conducted on the same dataset, demonstrating its effectiveness in capturing fine-grained Braille dot shadow patterns. The network is trained for 300 epochs with a batch size of 32 under consistent experimental settings, and performance is evaluated using a confusion-matrix-based framework with overall accuracy as the primary metric. Experimental results indicate that moderate photometric reductions significantly improve recognition performance by preserving critical micro-contrast cues. In particular, an exposure reduction of −20% achieves the best balance between accuracy (86.13%) and training efficiency (14.12 minutes), outperforming the non-augmented baseline (74.37%, 22.10 minutes). A hue reduction of −30% further improves robustness to ambient color variations, while aggressive positive adjustments degrade performance due to structural distortion. These findings confirm the effectiveness of the proposed MBC framework for practical Braille recognition in real-world environments.
Co-Authors - Universitas Nusantara PGRI Kediri, Mochamad Bilal - Universitas Nusantara PGRI Kediri, Roni Heri Irawan Abraham Dimas Bayu Aji Adiba, Fera Hidayatul Agus Muji Santoso Ahmad Bagus Setiawan Albab, Moh. Febby Ulil Alfian, Ahmad Ade Alfiana Hidayati Angga Yuanisyak Anik Nur Handayani Anisa Fatimatul Firdhausi Ansah, Muhammad Ardy Ardiansyah, Ryo Bella Putri Damayanti Daniel Swanjaya Dwi Lianawati Efendi, Ahmad Rizal Efendy, Wahyu Febri Nurcahyo Dwiyantoko Frans Rega Agista Hana Agustina Hanif Al Fatta - STMIK AMIKOM Yogyakarta Heru Wahyu Herwanto Intan Nur Farida Irma Setiawan Kusuma Islamiati Rachmah Iswoyo, Dio Dwi Julian Sahertian Julianto, Bagas Mahdiyah, Umi Mahendra, Rizqi Maulana Muhamad Sholafudin Mukhammad Annafinurika Mulya, Marga Asta Jaya Mulyo, Nando Rahmat Prasetyo Nia Talia Salsabela D.M. Oktafiyan Pratama, Yana Patmi Kasih Prakosa, Bryan Rizqi Prastyo, Agung Wahyu Rahman, Dedi Arif Risa Helilintar Roni Heri Irawan Seftania, Putri Derisa Adilla Dewi Setyawan, Moch Aris Siregar, Muhammad Fauzan Hardiansyah Sugianto, Hanania Oki Kurnia Vingki Dewi Aristina Violyna Sofiananda Wardani , Rama Yuda Wisnugraha, Wahyu Surya Yu, Tony Zidane Chesa Wardana