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All Journal Jurnal Ilmu Sosial dan Humaniora Padjadjaran Journal of Dentistry Spektra: Jurnal Fisika dan Aplikasinya Jurnal Otomasi Kontrol dan Instrumentasi TELEKONTRAN: Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Prima Magistra: Jurnal Ilmiah Kependidikan Jurnal Indonesia Sosial Teknologi Jurnal Material dan Energi Indonesia
Gianto Gianto
Akademi Metrologi dan Instrumentasi
Aerospace Engineering Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Dentistry Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

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THE DEVELOPMENT OF IMAGE PROCESSING METHOD ON THE AUTOMATIC READING SYSTEM OF THE GLASS THERMOMETER USING A DIGITAL CAMERA Gianto Gianto; Vera Firmansyah; Irwan Setiawan; Achsan Rifani
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 1 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 1, April 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.061.01

Abstract

The reading performance of an analog thermometer, Liquid in Glass Thermometer (LiGT), can be improved using a digital camera. The aim is to minimize the human error on the reading of LiGT and increase the accuracy of temperature measurement results. In order to achieve an accurate result, a robust image processing method is required in the measurement. In this work, the LiGT image generated using a digital camera is analyzed using the technique in HSV color space which consists of some image processing methods (e.g., thresholding, morphology filter). The type of LiGT used is the glass thermometer with the colored liquid. There are three main parts to this developed technique process, i.e., identifying the scale of LiGT to calculate the pixel per temperature unit value (ppt), segmentation of the liquid column, and calculate the temperature based on the ppt value. Through simulation with a synthetic image, we demonstrate that the developed technique in this work has successfully read (measured) the temperature value of the LiGT (having a scale unit of 1oC) with a measurement error of 0.04oC. In the experimental results, we also report the developed technique performed on a real image of LiGT.
STUDI PENGEMBANGAN SISTEM VISION BERBASIS KAMERA DALAM PENENTUAN POSISI MENISKUS PADA KALIBRASI GELAS UKUR GIANTO, GIANTO; FIRMANSYAH, VERA; TUNGGAL WARAS, NANDANG GUNAWAN; SUTANTO, WILI; YASRI, BUDI; MUSLIM, AZIS
Jurnal Material dan Energi Indonesia Vol 13, No 2 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jme.v13i2.51011

Abstract

Perhitungan estimasi nilai ketidakpastian pada proses kalibrasi gelas ukur, salah satunya dipengaruhi oleh pembacaan posisi meniskus cairan dalam gelas ukur. Olehkarena sifatnya yang masih analog, maka pembacaan meniskus sangat bergantung pada kemampuan operator dalam membaca skala gelas ukur. Umumnya, operator mampu membaca skala alat ukur pada batas ½ divisi skala tanpa alat bantu. Akurasi penentuan posisi meniskus dapat ditingkatkan menggunakan sistem vision berbasis kamera, yang menjadi tujuan di dalam studi ini. Pada studi ini, dikembangkan metode olah citra digital untuk membaca volume cairan di dalam gelas ukur kapasitas 50 mL dengan resolusi 1 mL. Sebagai objek penelitian, digunakan citra sintetis dan sampel gelas ukur yang memiliki garis skala berwarna biru muda, cukup kontras dengan warna meniskus yang abu-abu. Untuk itu pada proses segmentasi, digunakan metode pemisahan warna dalam model citra HSV. Pada simulasi yang menggunakan citra sintetis, dapat ditunjukkan bahwa metode olah citra yang dikembangkan berhasil membaca volume cairan dalam gelas ukur, dengan rentang kesalahan 0,07 mL, yang disebabkan oleh sebagian tinggi meniskus cairan yang tertutup oleh garis skala yang memiliki tebal 8 piksel setara dengan 0,14 mL. Hasil eksperimen juga menunjukkan metode olah citra yang dikembangkan berhasil diterapkan pada sampel gelas ukur.
Pengukuran Dimensi Nonkontak pada Objek Bola, Silinder, dan Kubus dengan Metode Triangulasi Menggunakan Laser Garis Gianto, Gianto
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 12 No. 1 (2024): TELEKONTRAN vol 12 no 1 April 2024
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v12i1.13554

Abstract

Dimensional measurements in the manufacturing industry are carried out to ensure that the final products are accurate in accordance with specifications. Generally, the measurement of such dimensions requires the measuring instrument to be in contact with the surface of the measuring object (contact measurement). Contact measurements may cause scratches on the measuring object. One solution to this problem is optical-based non-contact measurement using cameras. Some studies utilize reference objects in the process of converting pixels to units of length. The method requires that the reference object must always be present and appear on the image in every measurement activity. As a size standard, reference objects should not be used too often. Based on this, this study is directed to produce a non-contact measurement system with the use of reference objects only in calibration activities. This method uses the principle of laser scanner-based triangulation with an image processing method to obtain the size of the object based on the pixel coordinates of the laser beam that hits the surface of the object. The proposed system was then tested with measuring objects in the form of a ball with a diameter of 11.15 cm, a cube with a rib length of 2 cm, and a cylinder with a diameter of 8.2 cm and a height of 14 cm (based on the measurement results using a caliper). Measurements on these objects produced an average accuracy of 99.7% and an error value of 0.3%. The system can also be applied to measuring objects in the form of cylinders test weight in the field of metrology.
Conflict Resolution Strategies in Kampung Naga Indigenous Community: Preserving Tradition in the Face of Modernity Budi Yasri; Asep Ridwan Lubis; Vera Firmansyah; Gianto Gianto; Nandang Gunawan Tunggal Waras; Kartika Nurul Aulia
Jurnal Ilmu Sosial dan Humaniora Vol 13 No 3 (2024)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jish.v13i3.84817

Abstract

This study examines conflict resolution strategies within the Kampung Naga indigenous community. It focuses on how traditional governance systems—particularly adat law—function alongside state law to mediate conflicts and preserve cultural integrity amidst modernization pressures. Employing a descriptive qualitative method, this research draws on in-depth interviews, participant observations, and document analysis to reveal the community’s dual governance system. Findings indicate that Kampung Naga’s adherence to adat law fosters social cohesion and leads to generational tensions, particularly regarding land use and economic integration. The study demonstrates that while traditional mechanisms remain effective for resolving internal disputes, external conflicts, such as land disputes with government entities, require a hybrid approach incorporating state law. This duality illustrates the resilience of Kampung Naga’s cultural practices and the challenges they face in balancing modern legal frameworks. The practical implications of this research extend to broader discussions on preserving indigenous governance systems in the face of state legal integration and economic pressures. These findings offer critical insights into how traditional societies can maintain cultural autonomy while navigating external influences, contributing to theoretical and practical debates on conflict resolution and indigenous governance.
Prototipe Alat Ukur Densitas BBM Pertalite Berdasarkan SK DIRJEN MIGAS No. 486 Tahun 2017 Gianto, Gianto
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 13 No. 1 (2025): TELEKONTRAN vol 13 no 1 April 2025
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v13i1.15821

Abstract

The increasing use of pertalite fuel oil (BBM) directly implies a higher risk of fraud. Therefore, it is necessary to conduct quality testing of pertalite fuel, one of which is density testing. In the density testing of fuel at gas stations, the conventional method is generally still used, which involves manually using a hydrometer and thermometer, and then converting it to the standard temperature of 15°C using the ASTM 53B table. This research is designed to develop a prototype of a pertalite fuel density measuring device to accelerate the duration of density testing. This prototype is designed using a 1 kg load cell sensor, a DS18B20 sensor, and a 300 ml measuring cup integrated with an Arduino UNO. Where, using a push button as a tare button and output in the form of 2 LEDs and a 20x4 I2C LCD, using the mass and volume comparison method. The accuracy and precision of the prototype were obtained at 96,88% and 99,41%, with an average testing duration of 41 s to 56 s faster than the conventional method, which averages 125 s. This prototype was calibrated using standard M1 class weights, thermocouples, and a 25 ml pycnometer. The calibration results of the 1 kg load cell sensor showed an accuracy and precision of 99,72% and 99,98%, respectively, while the calibration results of the DS18B20 sensor showed an accuracy and precision of 99,18% and 99,27%, respectively.
Comparison of the quality of the result of digitising panoramic analogue films using transmission and reflection scanner mode with direct digital imaging standard Azhari, Azhari; Gianto, Gianto; Suprijanto, Suprijanto
Padjadjaran Journal of Dentistry Vol 31, No 2 (2019): July 2019
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (594.104 KB) | DOI: 10.24198/pjd.vol31no2.21155

Abstract

Introduction: The use of panoramic x-ray radiographs with analogue film negatives is still widely used. Contrast differences in the radiograph are determined by the level of light transmitted from the viewer to the film negative and visual perception of the radiologist, which can cause differences and errors of interpretation. This study was aimed to compare the quality of scanners produced by the transmission and reflection modes objectively with direct digital imaging standard. Methods: This study used a descriptive comparative design with purposive sampling method. Radiographic analysis was conducted towards 30 analogue radiographs of Radiology laboratory of Universitas Padjadjaran Dental Hospital. Digitisation was performed using a scanner with setting modes (reflection and transmission, 8-bit intensity resolution and spatial resolution of 800 dpi). Digitising the negative radiographs of analogue films into digital radiographs will get a range of percentage pixels. Histogram of radiographs with a percentage of pixels in the grey level range 0 - 64 exceeds 50%, including "under-exposed", in the grey level range 192 - 255 exceeding 50%, including "over-exposed". The evaluation was carried out to observe the radiograph exposure homogeneity by dividing the radiograph into 4 parts. Each part was calculated as the mean pixel value; then the standard deviation was searched for the four mean values (STDMI - standard deviation mean intensity) determined the homogeneity. Results: Digitising type of radiograph reflection was included under-exposed because the percentage of pixels in the grey level range 0 - 64 was 86.94%. STDMI consecutive reflection = 8.03, transmission = 18.05, direct digital imaging = 20.86. Conclusion: Digitisation with scanner transmission mode is the best result objectively because it approaches the quality value of direct digital imaging standard.Keywords: Objective quality, homogeneity, reflection, transmission
PROTOTIPE AUTOMATIC TANK GAUGE PADA MODEL TANGKI PENDAM BERBASIS INTERNET OF THINGS Gianto, Gianto
Jurnal Material dan Energi Indonesia Vol 15, No 01 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jme.v15i01.66050

Abstract

Dalam mengelola persediaan Bahan Bakar Minyak (BBM) di Stasiun Pengisian Bahan Bakar Umum (SPBU), diperlukan sistem monitoring data volume BBM untuk memastikan ketersediaan BBM yang memadai. Umumnya, pengukuran volume BBM pada tangki pendam di SPBU masih dilakukan secara manual menggunakan deepstick dan tidak real time. Karena dilakukan secara manual oleh operator, hasil pengukurannya rentan terhadap human error. Adapun pengukuran yang tidak real time dapat menghambat proses pengambilan keputusan dalam pengisian ulang BBM. Untuk itu, pada penelitian ini, prototipe Automatic Tank Gauge (ATG) berbasis Internet of Things (IoT) dirancang untuk sistem monitoring yang akurat dan real time. Volume BBM pada model tangki pendam dengan kapasitas 10 liter diperoleh berdasarkan ketinggian cairan permukaan BBM yang diukur dengan menggunakan transduser ultrasonik HC-SR04. Volume tersebut kemudian dikoreksi akibat adanya pengaruh suhu yang diukur dengan sensor suhu DS18B20. Data tersebut selanjutnya ditampilkan secara real time pada aplikasi mobile Blynk dengan NodeMCU ESP8266 sebagai pemroses data yang terkoneksi dengan internet (WiFi). Berdasarkan hasil pengujian volumetrik menggunakan gelas ukur pada 10 titik uji yakni 1000 mL sampai 10.000 mL, diperoleh hasil pengukuran volume menggunakan prototipe ini secara real time dengan rata-rata kesalahan 1,33% dan tingkat presisi 99,02%.
LEARNING BY LIVING: ACCULTURATION, LEADERSHIP, AND REFLEXIVITY IN BANCEUY’S INFORMAL ADULT EDUCATION ECOSYSTEM Yasri, Budi; Firmansyah, Vera; Firmansyah, Dudi Adi; Nurhayati, Sri; Gianto, Gianto; Mutmainnah, Disa Aisha; Lotfi, Fatima Zahra; Olugbade, Damola; Ahsan, Md. Hafizi; Boriboon, Gumpanat
Prima Magistra: Jurnal Ilmiah Kependidikan Vol. 6 No. 3 (2025): Volume 6 Number 3 (July 2025)
Publisher : Program Studi PGSD Universitas Flores

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/jpm.v6i3.5680

Abstract

Despite increasing recognition of Indigenous knowledge systems, the role of informal adult learning within customary communities remains under-theorized in mainstream adult education discourse. There is limited understanding of how traditional practices, beliefs, and community structures shape learning processes outside formal institutions. This study investigates the role of informal adult learning in Kampung Adat Banceuy, a Sundanese customary village in West Java, Indonesia. The research focuses on how learning is embedded in four interconnected domains: customary leadership, ritual practice, selective acculturation, and community-based tourism. These domains form a cohesive learning ecology through which cultural knowledge, social roles, and ethical values are transmitted and adapted across generations. Using an ethnographic methodology, the study involved participant observation, semi-structured interviews with 36 informants, and analysis of cultural documents. Data were examined through thematic coding and interpretive analysis to capture the nuanced, situated processes of learning as enacted in everyday life. Findings show that informal adult learning in Banceuy is relational, embodied, and performative. Tourism, in particular, functions as a reflexive learning environment where adults develop narrative, logistical, and intercultural competencies while negotiating cultural meaning and ethical boundaries. Rather than being a site of commodification, tourism becomes a space of identity work and adaptive pedagogy. These insights challenge conventional hierarchies of formal education and affirm the centrality of Indigenous learning systems in sustaining cultural resilience. The study offers implications for policy and theory, emphasizing the need to support culturally embedded, community-driven models of adult education.
Automatic Reading System of Scale Values on Webcam-Based Measuring Vessel Yasri, Budi; Gianto, Gianto; Rachmawati, Rossi Aulia
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 8 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i8.1292

Abstract

The fuel measurement pump is an installation used to measure the quantity of liquid fuel (BBM) to be sold or delivered to consumers. In the transaction of buying and selling fuel at gas stations, the fuel measurement pump plays a crucial role. Therefore, this measuring device needs to be calibrated or re-verified, and supervision is carried out using a standard measuring vessel with capacities of 10 L or 20 L. Errors in reading the measuring vessel can occur due to differences in individual visual acuity. To address this issue, a prototype for automatic reading of measuring vessels is created using a webcam camera. This prototype utilizes the Raspberry Pi 3 B+ as an image processor and the Logitech C270 webcam as an image capturer. The image processing process involves segmentation steps, transforming the image into a grayscale and then into a binary image. This research involves two different types of fluids in the volume measurement of the measuring vessel, namely distilled water (equates) and petalite. The measurement results with the prototype show an average accuracy level of around 99,23%, an average precision level of about 99,37%, and an average error rate of about 0,77%. For the equated fluid, the accuracy, precision, and error levels are 99,48%; 99.76%; and 0,52%, respectively. Meanwhile, for the petalite fluid, the accuracy, precision, and error levels are 98,98%; 98,80%; and 1,02%, respectively.
Prototipe Penekan Tombol Otomatis Simulator Meter kWh Untuk Pengisian Token Berbasis Mikroprosesor dan API Telegram Firmansyah, Vera; Oktaviyana, Karlina; Fathan, H. Syauqi; Muslim, Azis; Firmansyah, Firmansyah; Gunawan TW, Nandang; Sutanto , Willi; Gianto, Gianto
Jurnal Otomasi Kontrol dan Instrumentasi Vol 16 No 2 (2024): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2024.16.2.7

Abstract

The change of payment method for electrical energy to prepaid by the Perusahaan Listrik Negara (PLN) is based on the increase in the use of electrical power, and there are areas for improvement in the postpaid system. The prepaid method uses the Standard Transfer Specification (STS) system, users enter a 20-digit token number on the kWh by pressing the kWh meter keyboard, but there are some things that could be improved if they look at the placement of the kWh meter. The user's mobility is very high. The Internet of Things (IoT) system of the kWh meter automatic button press aims to make it easier for users. The prototype uses critical components such as Raspberry PI 3B as a microprocessor, telegram as user input and output, and 12 solenoids as a keypress medium. System feasibility testing is carried out by testing the accuracy of suppression, filling time, and the receipt of messages on bot telegrams. Accuracy for each button with a test of 20 presented at a delay of 2.00 seconds to 0.04 seconds got 100% accurate results. Tested the charging time with a 100% curated delay results in the fastest time with the highest accuracy rate on a delay of 0.10 seconds to 0.04 seconds faster when compared to manual charging. On the receipt of telegram messages, get 100% test results with the consideration of 13 letters received by users. Further development can be done considering the bot display, user inputs and outputs, and customized containers on the kWh meter.
Co-Authors Achsan Rifani Ahsan, Md. Hafizi Ari Susandy Sanjaya, Ari Susandy Asep Ridwan Lubis Azhari Azhari Azis Muslim, Azis Boriboon, Gumpanat Budi Yasri Fathan, H. Syauqi Firmansyah Firmansyah Firmansyah, Dudi Firmansyah, Dudi Adi FIRMANSYAH, VERA Gunawan TW, Nandang Hilman Syaeful Alam Irwan Setiawan Irwanto, Decky Ari Karsono, Eko Kartika Nurul Aulia Lotfi, Fatima Zahra Mutmainnah, Disa Aisha Nandang Gunawan TW Oktaviyana, Karlina Olugbade, Damola Rachmawati, Rossi Aulia Rahmawati, Riski Amalia Sri Nurhayati Suprijanto Suprijanto Sutanto , Willi SUTANTO, WILI Sutanto, Willi TUNGGAL WARAS, NANDANG GUNAWAN Vera Firmansyah Vera Firmansyah Waras, Nandang Gunawan Tunggal Yasri, Budi