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All Journal Jurnal Buana Informatika Jurnal Nasional Teknologi Informasi dan Aplikasinya
I Komang Arya Ganda Wiguna
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Computer Science & IT Engineering

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Inspired GWO-based Multilevel Thresholding for Color Images Segmentation via M. Masi Entropy I Made Satria Bimantara; I Wayan Supriana; I Komang Arya Ganda Wiguna; Ida Bagus Gede Sarasvananda
Jurnal Buana Informatika Vol. 16 No. 2 (2025): Jurnal Buana Informatika, Volume 16, Nomor 02, Oktober 2025
Publisher : Universitas Atma Jaya Yogyakarta

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Abstract

Image segmentation is crucial in image processing and computer vision, with multilevel thresholding (ML-ISP) offering robust solutions for complex images. However, effectively applying ML-ISP to RGB color images remains a challenge due to computational complexity and the limitations of traditional optimization algorithms, such as the Grey Wolf Optimizer (GWO). This study proposes an Inspired Grey Wolf Optimizer (IGWO) to address these issues and enhance ML-ISP for RGB color images. The performance stability of IGWO is comprehensively evaluated using three distinct objective functions: the Otsu method, the Kapur Entropy, and the M. Masi Entropy. Qualitative and quantitative analyses using PSNR, SSIM, and UQI were conducted on benchmark images. Results consistently demonstrate that IGWO, particularly with M. Masi Entropy, achieves superior segmentation quality. This research incorporates GridSearch-based hyperparameter tuning. The findings highlight the effectiveness and robustness of the proposed IGWO approach for complex ML-ISP tasks on color images.
Perancangan User Interface Platform Sosial Literasi Bookwormer dengan Metode Design Thinking Ni Kadek Arimbi Wirasetia; I Ketut Gede Suhartana; I Komang Arya Ganda Wiguna
Jurnal Nasional Teknologi Informasi dan Aplikasinya Vol. 4 No. 2 (2026): JNATIA Vol. 4, No. 2, Februari 2026
Publisher : Informatics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JNATIA.2026.v04.i02.p18

Abstract

Reading is a fundamental skill for intellectual growth and critical thinking development, yet Indonesia faces significant literacy challenges with only 1 out of 1000 the population reads regularly according to UNESCO data and the Indonesian National Assessment Program revealing that merely 6.06% of students possess good literacy skills. The majority of social media platforms promoting instant gratification through short-form contents have further decreasing attention spans and reading habits. This study aims to design “Bookwormer”, a social literacy platform that supports reading habits through book exploration, community engagement, and distraction-free environment. The study used Design Thinking methodology, consists of five steps: Empathize, Define, Ideate, Prototype, and Test. A prototype was developed, featuring a home page, trending books exploration, reading clubs, and personal library with reading goal statistics. Usability testing using System Usability Scale (SUS) with 20 participants yielded an average score of 81.25, indicating excellent usability. Bookwormer is able to address identified user needs and contributes in improving digital literacy culture in Indonesia.
Co-Authors I Ketut Gede Suhartana I Made Satria Bimantara I Wayan Supriana Ida Bagus Gede Sarasvananda Ni Kadek Arimbi Wirasetia