Article Per Year (5 Year)
p-Index From 2021 - 2026
5.879
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Merpati (Menara Penelitian Akademika Teknologi Informasi) Jurnal Ilmu Komputer Buletin Udayana Mengabdi Jurnal SPEKTRUM Majalah Ilmiah Teknologi Elektro Jurnal Pendidikan Teknologi dan Kejuruan TELKOMNIKA (Telecommunication Computing Electronics and Control) PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic PROSIDING CSGTEIS 2013 Jurnal Teknologi Informasi dan Ilmu Komputer JUITA : Jurnal Informatika JOIV : International Journal on Informatics Visualization Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Syntax Literate: Jurnal Ilmiah Indonesia Matrix : Jurnal Manajemen Teknologi dan Informatika Cetta: Jurnal Ilmu Pendidikan Jurnal RESISTOR (Rekayasa Sistem Komputer) Astonjadro Journal of Electrical, Electronics and Informatics Jurnal Ilmiah Vastuwidya Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) MATRIX : JURNAL MANAJEMEN TEKNOLOGI DAN INFORMATIKA Majalah Ilmiah Teknologi Elektro
I Made Oka Widyantara
Electrical Engineering Universitas Udayana
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Social Sciences Other

Published : 119 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 119 Documents
Search

 8   9   10   11   12 
Kompresi Citra Medis dengan DWT dan Variable Length Code I Gusti Ayu Garnita Darma Putri; Nyoman Putra Sastra; I Made Oka Widyantara; Dewa Made Wiharta
Jurnal Teknologi Elektro Vol 20 No 2 (2021): (Juli-Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2021.v20i02.P02

Abstract

This paper designed a medical image compression scheme using DWT with mother wavelet Coiflet and Symlet. Thresholding and quantization process are the key to lossy compression in this scheme, and the outputs will be coded with Huffman or Arithmetic coding. There are four different codec combinations namely: Coiflet-Huffman, Coiflet-Arithmetic, Symlet-Huffman, Symlet-Arithmetic. Compression performance of each codec will be analyzed based on PSNR and compression ratio. The compression testing used 3 grayscale medical images with dimension of 160x160 pixels. The most optimal PSNR dan rate are produced by Symlet-Aritchmetic codec with recommendation threshold value less than 12. Threshold value above 12 causes PSNR of the reconstruction image will be below the minimum PSNR stardard for digital image, which is of 30dB.
Audit Infrastruktur Aplikasi Pelayanan Publik Pemerintah Kota Denpasar Cokis Ratih Kumbara; Linawati Linawati; I Made Oka Widyantara
Jurnal Teknologi Elektro Vol 16 No 2 (2017): (May - Agustus) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2017.v16i02p14

Abstract

Salah satu Tugas Pokok dan Fungsi utama Dinas Komunikasi dan Informatika Kota Denpasar adalah sebagai pengelola infrastruktur aplikasi pelayanan publik di Pemerintah Kota Denpasar. Pelayanan publik berupa pelayanan kependudukan di Kota Denpasar menggunakan aplikasi Sistem Informasi Administrasi Kependudukan (SIAK) yang meliputi pembuatan KTP, KK, dan Akta Kelahiran. Jika infrastruktur aplikasi pelayanan publik ini mengalami permasalahan, maka akan sangat menghambat semua proses yang berujung kepada komplain masyarakat dan berdampak pada menurunnya tingkat kepercayaan publik. Oleh karena itu dilakukan suatu evaluasi internal berupa audit dalam pengelolaan infrastruktur aplikasi pelayanan publik agar pihak pengelola dapat melakukan perencanaan untuk perbaikan serta peningkatan dan pengembangan infrastruktur yang telah dibangun. Audit dilakukan dengan menggunakan COBIT 4.1 sebagai kerangka kerja kontrol. Berdasarkan hasil audit dengan menggunakan Maturity Model COBIT 4.1, diperoleh tingkat kematangan pada proses AI3 (Mendapatkan dan Memelihara Infrastruktur Teknologi) yaitu berada pada level 3 (defined). Untuk penilaian secara objektif, tingkat kematangan berada diantara level 3 (defined) dan level 4 (managed and measurable) yaitu sebesar 3,53. Rekomendasi diberikan secara bertahap berdasarkan tingkat kematangan yang diperoleh dari hasil evaluasi yaitu tingkat kematangan 3 (defined) untuk dapat ditingkatkan ke tingkat kematangan 4 (managed and measurable), kemudian ditingkatkan lagi menuju tingkat kematangan ideal yaitu 5 (optimized).
Pemilihan Algoritma Kompresi Optimal untuk Citra Digital Bitmap Santi Ika Murpratiwi; I Made Oka Widyantara
Jurnal Teknologi Elektro Vol 17 No 1 (2018): (Januari - April) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2018.v17i01.P13

Abstract

Citra bitmap biasanya memiliki ukuran citra yang relative besar. Hal ini mempengaruhi proses transmisi data dan membutuhkan tempat penyimpanan yang besar. Untuk memecahkan masalah tersebut dibutuhkan sebuah teknik reduksi citra untuk memampatkan ukuran citra dengan tetap menjaga kualitasnya. Dalam penelitian ini akan membandingkan beberapa algoritma kompresi lossy untuk menemukan satu metode optimal yang cocok untuk citra digital bitmap. Algoritma kompresi yang akan dibandingkan adalah Absolute Moment Block Truncation Coding (AMBTC), Joint Photograpic Experts (JPEG), dan Non-Negative Matrix Factorization (NMF). Proses perbandingan dilakukan dengan menghitung rasio kompresi, Mean Square Error (MSE), and Peak Signal to Noise Ratio (PSNR) untuk mengetahui ukuran hasil kompresi dan kualitas citra hasil kompresi. Hasilnya adalah rasio kompresi rata-rata untuk AMBTC adalah 7.32%, JPEG 1698.3%, dan NMF 8.32%. Nilai rata-rata MSE untuk kompresi AMBTC adalah 36.92, kompresi JPEG adalah 54.50 dan untuk NMF adalah 194.54. Sedangkan untuk nilai PSNR
Analisa Horizontal Handover Terhadap Qos Layanan Streaming Multimedia E-Learning Pada Jaringan WLAN 802.11 I M.O. Widyantara; Bagus D. Cahyono; Widyadi Setiawan
Jurnal Teknologi Elektro Vol 14 No 1 (2015): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2015.v14i01p08

Abstract

In this globalization era, the state of the user who no longer occupies in a single place, but always moving, it is necessary to continuity of communication that will cause a handover. This paper intends to analyze the effect of 802.11 WLAN horizontal handover to the QoS of streaming e-learning. Methods of data collection process using the Cisco 3500 series access point that supports handover with existing network systems, ad-hoc network and type of hard handover. The results of the data analysis showed that the handover process is able to improve the QoS by gradually restored gradually, to get back to normal QoS
Pengenalan Dan Klasifikasi Citra Tekstil Tradisional Berbasis Web Menggunakan Deteksi Tepi Canny, Local Color Histogram Dan Co-Occurrence Matrix I Putu Gd Sukenada Andisana; Made Sudarma; I Made Oka Widyantara
Jurnal Teknologi Elektro Vol 17 No 3 (2018): (September - Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2018.v17i03.P15

Abstract

the use of traditional Indonesian textile motifs is influenced by elements of nature, environment and culture that develop in the community. Materials, motifs and techniques for making traditional textiles are different from one region to another. The use of information technology in preservation and providing knowledge to the public can made in the form of software that can match the pattern of images or photos while performing traditional textile classifications. The input in this study is an image of a patterned texture. The software through the pattern recognition process will perform calculations and produce values ??that can be matched in the sample database that has previously been processed. The method used is the color feature extraction with the Local Color Histogram method, texture feature extraction with the Co-occurrence matrix method, and the extraction of shape features with the Canny Edge Detection method. Each feature extraction will produce a vector. The data used consisted of 10 textile groups namely endek bali, songket bali, tenun dayak, tenun ikat, sasirangan, kain besurek, ulos, sutera bugis, kain gringsing. Classification method by using K-Nearest Neighborhood (K-NN). The results of this study are the highest accuracy values ??for extraction of texture features and the lowest accuracy values ??for the combination of extraction of shape and color features.
Analisa Kinerja Penerapan Standard Protokol Keamanan IEEE 802.11 Pada Layanan Wireless Fidelity M Zatiar Erwan Kalam; Ni Made Ary Esta Dewi Wirastuti; I Made Oka Widyantara
Jurnal Teknologi Elektro Vol 20 No 1 (2021): (Januari - Juni ) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2021.v20i01.P10

Abstract

Communication network depends on the WLAN , and there is so much demand on the Quality Of Service (QoS) WLAN like Throughput , delay , and filter to secure the Communication Data , therefore a network security mechanism is using the Wired Equivalent Privacy (WEP), WiFi Protected Access (WPA), and WPA2 [14]. Mall Bali Galleria has several alternative for free WiFi, There is so many Wi-Fi has been installed causing the problem interference, and that affect the performance of the WiFi, MBG has the Indoor and Outdoor Area, The alternative to handle the interference is to using the automation channel by implementing Channel Fly , Background Scanning and Static Channel. From the security mechanism, Channel And Frequencies made by doing scenario on every single access point to get the best scenario , from the scenario that has been submitted The best score of the packet loss on indoor area Scenario that uses 4 AP with the 5Ghz Frequency , static channel , WEP-64 is 0,016ms of the packet loss , the Outdoor areas scenario that uses 5 AP with 5Ghz frequency ,Channel Fly , WEP-64 get 0,094ms of the packet loss , The best jitter score for the indoor area that uses 2 AP , 5Ghz Background Scanning , WPA 2 is 1.336ms of the jitter, outdoor area 8 AP , 5Ghz Frequency , static channel , WPA2-Mixed get 1,116 ms of Jitter , The Throughput best scores is indoor area with 1 AP , 5Ghz Frequency, Static Channel , WPA2-Mixed get 78,7Mbps of the Throughput, for the Outdoor Areas using 8 AP , 5Ghz Frequency , Background Scanning, Disable Security is 80Mbps Of The Throughput , if it compared with the existing scenario the performance is improved to 10-30%. WEP has good packet loss score however it has smallest Throughput. Static channels are recommended on the location that have high interference.
Ekstraksi Fitur Warna, Tekstur dan Bentuk untuk Clustered-Based Retrieval of Images (CLUE) I Gusti Rai Agung Sugiartha; Made Sudarma; I Made Oka Widyantara
Jurnal Teknologi Elektro Vol 16 No 1 (2017): (January - April) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Picture (image) is a media that used for storing visual data, for example, two-dimensional images are often used to store an incident. Images on the internet media growth very rapidly. There are a lot of image, video, text or other content on the Internet. Image Index and image retrieval again become a topic of research in the last decade in which concentrated on how to get the meaning of an information contained in an image. Three methods outlined in the search for an image, the text-based image retrieval, content-based image retrieval and indexing images in the order of language. This study focuses on the preparation of the features of an image based on color and texture. Features colors using the average value of Hue image, texture features using Gray Level occurance Matrix (GLCM). Color, texture, and shape extraction technique resulted in eighteen (18) feature that can be used as features in the process of Clustering.DOI: 10.24843/MITE.1601.12
Desain dan Implementasi Aplikasi Video Surveillance System Berbasis Web-SIG I M.O. Widyantara; N Utami Wedanti; I B.A. Swamardika
Jurnal Teknologi Elektro Vol 14 No 1 (2015): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2015.v14i01p09

Abstract

Video surveillance system (VSS) is an monitoring system based-on IP-camera. VSS implemented in live streaming and serves to observe and monitor a site remotely. Typically, IP- camera in the VSS has a management software application. However, for ad hoc applications, where the user wants to manage VSS independently, application management software has become ineffective. In the IP-camera installation spread over a large area, an administrator would be difficult to describe the location of the IP-camera. In addition, monitoring an area of IP- Camera will also become more difficult. By looking at some of the flaws in VSS, this paper has proposed a VSS application for easy monitoring of each IP Camera. Applications that have been proposed to integrate the concept of web-based geographical information system with the Google Maps API (Web-GIS). VSS applications built with smart features include maps ip-camera, live streaming of events, information on the info window and marker cluster. Test results showed that the application is able to display all the features built well
Pemampatan Citra Pas Foto dengan Menggunakan Algoritma Kompresi Joint-Photograpic Experts Group (JPEG) dan Principal Component Analysis (PCA) M. Azman Maricar; Oka Widyantara
Jurnal Teknologi Elektro Vol 17 No 1 (2018): (Januari - April) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2018.v17i01.P14

Abstract

Penelitian ini bertujuan untuk membandingkan hasil kompresi dari algoritma Joint-Photograpic Experts Group (JPEG) dan Principal Component Analysis (PCA) terhadap citra pas foto, guna menemukan hasil terbaik dari hasil citra kompresi yang kualitas hasilnya tidak berbeda jauh dengan citra aslinya. Alat ukur yang digunakan adalah Mean Square Error (MSE) dan Peak Signal to Noise Ratio (PSNR). Hasil yang diperoleh dalam penelitian ini adalah rata-rata MSE dan PNSR algoritma PCA dapat dikatakan tinggi jika dibandingkan dengan algoritma JPEG. Namun dari segi kualitas citra yang dihasilkan tidak jauh berbeda dengan algoritma JPEG.Dapat dikatakan bahwa algoritma JPEG mampu menghasilkan citra yang lebih baik dibandingkan algoritma PCA. Namun, algoritma PCA tidaklah buruk untuk dijadikan alternatif dalam kompresi citra pas foto.
ANALISA PENGARUH BIT ERROR PADA TRANSMISI DATA VIDEO IMO Widyantara
Jurnal Teknologi Elektro Vol 4 No 2 (2005): (July - December) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Proses kompresi video yang membuang redudansi spatial dan temporal membuat data yang dihasilkanmenjadi sangat sensitif terhadap error selama transmisi. Error yang terjadi pada sebagian kecil darideretan bit video yang telah terkode dapat menyebabkan penurunkan kualitas visual yang signifikan. Tulisanini akan menunjukan pengaruh bit error yang dihasilkan oleh derau kanal pada sinyal denganmemvariasikan Bit Error Rate (BER). Hasil penelitian menunjukan bahwa bit error berpropagasi secaratemporal [Error resilience] menyebabkan penurunan PSNR pada beberapa frame. Bit error terjadi padaposisi acak dalam deretan frame video sehingga sulit untuk diprediksi
Co-Authors A. T. A Prawira Kusuma A.A. Made Agung Istri Iswari Aditya Dwipayana Aditya Widhiatama, Ngakan Putu Agus Anwar Eka Wahyudi Anak Agung Ayu Putri Ardyanti Anang Kusnadi Aniek Laksmidewi Arda Narendra, I Gusti Lanang Asana, I Made Dwi Putra Atmaja, Ketut Jaya Ayuni Harianti Bagus D. Cahyono Christanto Nadeak, Yobel Cokis Ratih Kumbara Derry Suia Pathentantama Desak Ayu Sista Dewi Dessy Hariyanti, NK Dewa Ayu Indah Cahya Dewi Dewa Made Sri Arsa, Dewa Made Dewa Made Wiharta Edo Halim Saputra Fajar Purnama Gamantyo Hendrantoro Gede Manuaba, Ida Bagus Gede Sukadarmika Haris Chandra Agustina I Dewa Gede Hardi Rastama I G. A. K. Diafari Djuni Hartawan I G.A.K. Warmayana I Gede Iwan Sudipa I Gede Sudiantara I Gede Sudiantara I Gusti Agus Adek Putra Ardiwinata I Gusti Ayu Garnita Darma Putri I Gusti Nyoman Dharmayana I Gusti Rai Agung Sugiartha I Kadek Adi Wiguna Sanjaya I Kadek Noppi Adi Jaya I Komang Adi Bayu Adnyana I Made Aditya Virgiawan I Made Arsa Suyadnya I Made Bayu Dibawan I Made Dhanan Pradipta I Made Dwi Putra Asana I Made Rai Putera Yasa I Made Sukarsa I Made Yudi Candra Putra I Nyoman Gede Arya Astawa I Nyoman Gunantara I Putu Agus Eka Pratama I Putu Ardana I Putu Gd Sukenada Andisana I Putu Noven Hartawan I Wayan Kayun Wardana I Wayan Shandyasa I Wayan Shandyasa I.A Laksmi IBGD. Dhyaksa Ida Bagus A. Swamardika Ida Bagus Putu Adnyana Ida Bagus Putu Adnyana Indra Dwi Cahya Setyawan Janice Jessica Indrayani Jayantari, Made Widya Juliawan Pawana, I Wayan Adi Kadek Surya Adi Saputra Kamarudin, Nur Diyana Ketut Bagus Bayu Sanjaya Komang Ery Rusdiana Komang Gede Widi Adnyana Komang Kompyang Agus Subrata Komang Oka Saputra Komang Tri Wahyuni . L Linawati L.D. Purnamasari Linawati Linawati Linawati Linawati linawati linawati Linawati Linawati Lintin, Yosep Tara M Acarya Mordekhai Karang M Zatiar Erwan Kalam M. Azman Maricar made andyka Made Arya Putra Kusuma Made Sudarma Made Sudarma Merliana, Ni Putu Eka Muhammad Audy Bazly N Utami Wedanti N. M. A. E. Dewi Wirastuti N.M.A.E.D Wirastuti Ngurah Indra ER Ni Komang Ayu Suandaniasih Ni Made Ary Esta Dewi Wirastuti Ni Putu Widya Yuniari Nyoman Pramaita Nyoman Pramaita Nyoman Putra Sastra Oka, I Dewa Gede Ari P. A. Satya Prabhawa Pawana P., I Gusti Ngurah Agung Pawana, I Wayan Adi Juliawan Prabawa, I Nyoman Angga Pradnyana, I Made Putri Alit Widyastuti Santiary Putu Agus Pradnyana Jaya Putu Arya Mertasana Putu Krisna Adi, I Gusti Ngurah Putu Prima Winangun Putu Sintia Susiani Pande R. Sapto Hendri Boedi Soesatyo Rukmi Sari Hartati Sandhiyasa, I Made Subrata Santi Ika Murpratiwi Saputra, Komang Oka Setyohadi, Djoko Budiyanto Sri Andriati Asri, Sri Andriati Susila, Anak Agung Ngurah Hary Tri Febriana Handayani W. Setiawan Widiadnyana, Putu Widyadi Setiawan Widyanto, I Putu Wikananda, I Gusti Ngurah Satya Wirawan Wirawan