Articles
9,199 Documents
Filtering Based Illumination Normalization Techniques for Face Recognition
Sasan Karamizadeh;
Shahidan M abdullah;
Seyed Mohammad Cheraghi;
MazdakZamani MazdakZamani
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 2: February 2015
Publisher : Institute of Advanced Engineering and Science
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The main challenge experienced by the present face recognition techniques and smooth filters are the difficulty in managing illumination. The differences in face images that are created by illumination are normally bigger compared to the differences in inter-person that is utilized to differentiate identities. However, face recognition over illumination has more uses in a lot of applications that deal with subjects that are not cooperative where the highest potential of the face recognition as a non-intrusive biometric feature can be executed and utilized. This study aims to offer a crucial review of researches involving illumination techniques, and image-based face recognition over illumination. Information was collected from journals, books and electronic sources published in the period of 1971 to 2013. In depth explanation is provided on the advantages and drawbacks, strategies and performance levels of the current techniques. DOI: http://dx.doi.org/10.11591/telkomnika.v13i2.7001
Data and Metadata Exchange Design with SDMX Format using Web Service for Interoperability Statistical Data
Jaka Sembiring;
Ana Uluwiyah
Indonesian Journal of Electrical Engineering and Computer Science Vol 14, No 2: May 2015
Publisher : Institute of Advanced Engineering and Science
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Today’s concept of Open Government Data (OGD) for openness, transparency and ease of access of data owned by government agencies becomes increasingly important. This initiative emerges from the demand of data users for the data belongs to the government agencies. The data services providing an easy access, cheap, fast, and interoperability are needed by the users and becomes important indicator performance for respective government agencies. Statistical Data and Metadata Exchange (SDMX) is a new standard format in the data dissemination activities particularly in the exchange of statistical data and metadata via Internet. In this respect SDMX support the implementation of OGD project. This paper is on the technical design, development and implementation of data and metadata exchange service of statistical data using SDMX format to support interoperability data through web services. Three results are proposed: (i) framework for standardization of structure of statistical publications data model with SDMX; (ii) design architecture of data sharing model; and (iii) web service implementation of data and metadata exchange service using Service Oriented Analysis and Design (SOAD) method. Implementation at Statistics Indonesia (BPS) is chosen as a case study to prove the design concept. It is shown through quantitative assessment and black box testing that the design achieves its objective. DOI: http://dx.doi.org/10.11591/telkomnika.v14i2.7505
Research and Implementation of Congestion Control Scheme in ForCES Router
Bangzhi Xiao;
Ming Gao;
Weiming Wang;
Julong Lan
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 10: October 2013
Publisher : Institute of Advanced Engineering and Science
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With packet input rate rise ceaselessly, FoCES system will finally be congested. In order to solve this problem, aiming at the common local congestion and global congestion, this paper proposed a local congestion control strategy based on scheduling and a global congestion control mode based on the linkage between CE and FE. These two congestion control schemes can independently run inside the system, and also can operate simultaneously. Making that the forwarding rate, throughout and packet loss all have a great improvement in the FE end. DOI: http://dx.doi.org/10.11591/telkomnika.v11i10.3387
Simulation and modeling of two-level DC/DC boost converter using ARX, ARMAX, and OE model structures
M.A.N. Amran;
A.A. Bakar,;
M.H.A. Jalil;
M.U. Wahyu;
A.F.H.A. Gani
Indonesian Journal of Electrical Engineering and Computer Science Vol 18, No 3: June 2020
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v18.i3.pp1172-1179
This paper presents simulation and modeling of two-level DC/DC boost converter using system identification technique. The main objective is to identify the unknown mathematical model from designated converter that has 2 modes of operation. Signals from the converter were processed based on the impulse response from input and output voltages, which were in time domain data. Auto Regressive with eXogenous (ARX), Auto Regressive Moving Average with eXogenous (ARMAX), and Output-Error (OE) model structure techniques had been employed to generate a model from the converter, whose validation was based on coefficient of determination (R2) or best fits criterion. The result shows that the ARX model structure produced the best model with 94.03%, compared to ARMAX and OE with 93.70% and 92.25% respectively. In terms of stability for open-loop analysis, the ARX model structure gave the most stable system.
A Multicriteria Selection Model for Developing New Color Calibration Device
Ying-Chieh Fang;
Chiuh-Cheng Chyu
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 3: March 2014
Publisher : Institute of Advanced Engineering and Science
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Color Calibration Device is a key component for the performance of Medical Display Monitor (MDM). MDMs have been extensively used in hospitals in the past decades. The technological requirements of MDMs are higher than those of general purpose display monitors, but the gross profit margins of MDMS are larger as well. The purpose of this research is to build a hybrid multiple criteria decision making (MCDM) model useful in developing new color calibration device for the MDM industry. The proposed MCDM model uses fuzzy Kano method to filter the performance criteria, and then apply the analytic network process (ANP) in selecting the best alternative among three new products. In this study, gray relation analysis (GRA) is used to build a relations-structure for ANP criteria. The paper also presents a case study on model implementation in a LCD high-tech company. DOI : http://dx.doi.org/10.11591/telkomnika.v12i3.4799
The Performance of Synchronization Algorithm in Real-time OFDM—PON System
Yuelin Du;
Jingxian Zhang
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 7: November 2012
Publisher : Institute of Advanced Engineering and Science
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In OFDM-PON system, the synchronization signal is very important. We use synchronization signal to get a whole OFDM signal. Due to the real-time system, we need to get the fast change signal. So get a true signal is very important and very hard. That is to say, we need to design an excellent algorithm to get finish this demand. This is another point of this project. In the paper, the author designed a new algorithm to solve the problems. we use some simulations to compare the performances of different algorithms to get the further understanding. In the experiment, we use more detail algorithms to estimate if it is useful in real-time OFDM-PON system. When the SNR is 10, we can get the synchronization signal correctly. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1576
Content Based Image Retrieval using Feature Extraction in JPEG Domain and Genetic Algorithm
Parvin N;
Kavitha P
Indonesian Journal of Electrical Engineering and Computer Science Vol 7, No 1: July 2017
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v7.i1.pp226-233
Content-Based Image Retrieval (CBIR) aims at retrieving the images from the database based on the user query which is visual form rather than the traditional text form. The applications of CBIR extends from surveillance to remote sensing, medical imaging to weather forecasting, security systems to historical research and so on. Though extensive research is made on content based image retrieval in the spatial domain, we have most images in the internet which is JPEG compressed which pushes the need for image retrieval in the compressed domain itself rather than decoding it to raw format before comparison and retrieval. This research addresses the need to retrieve the images from the database based on the features extracted from the compressed domain along with the application of genetic algorithm in improving the retrieval results. The research focuses on various features and their levels of impact on improving the precision and recall parameters of the CBIR system. Our experimentation results also indicate that the CBIR features in compressed domain along with the genetic algorithm usage improves the results considerably when compared with the literature techniques.
A smart monitoring and controlling for agricultural pumps using LoRa IOT technology
Aktham Hasan Ali;
Raad Farhood Chisab;
Mohannad Jabbar Mnati
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 1: January 2019
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v13.i1.pp286-292
Controlling electrical pumps on farms can be problematic, especially if there are a small number of people managing or working on huge areas of land and if the provision of electricity is not consistent. Therefore, further techniques for the management of plant irrigation on this type of land are being invented to make the process of irrigation easier. In this paper, a new intelligent device is designed and utilized to control the operation of irrigation pumps using a robust method of communication to transfer information at long distances, for the lowest cost, and the longest battery life. This technology is called LoRa (Long Range) communication, which is a low-power technology. The unit consists of two circuits: the first one is for switching the pumps ON and OFF, while the second one controls and monitoring the work of the pumps. Monitoring of the pumps can also be carried out through smart phones by measuring the voltage. The most important features of this new design are its intelligent control for long distances, cheap price, and a long operational life of more than five years. The goal of this paper is to help farmers by designing and manufacturing a remote-control system that switches irrigation pumps on and off using LoRa technologies.
Use of QC Methods to Improve the Utilization Efficiency of Condensate Water
Xinquan Jiang;
Xinqiao Jiang
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 4: April 2013
Publisher : Institute of Advanced Engineering and Science
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Condensation of water use for energy saving and emission reduction is of great significance, and QC methods is an effective method to improve the utilization of condensate management. This article will be the empirical study on the condensation water in the target Enterprise workshop as objects, study how to use QC method to improve the recovery rate, and to adopt effective measures to improve the production process of condensation water, eventually able to resolve their energy-saving emission reduction issues. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2368
Hybrid MVDR-LMS beamforming for Massive MIMO
Yasmine M. Tabra;
Bayan Sabbar
Indonesian Journal of Electrical Engineering and Computer Science Vol 16, No 2: November 2019
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijeecs.v16.i2.pp715-723
With the high speed of communication in LTE-5G, fast beamforming techniques need to be adopted. The training time required to form and steer the main lobes toward 5G multiple users must be short. Least-Mean-Square (LMS) training time is not suitable to work with in LTE-5G, but it has a good performance in forming multiple beams to large number of users and producing nulls in the interference direction. In this paper, an optimized hybrid MVDR-LMS beamforming algorithm is proposed to reduce the time required to estimate the antenna’s weights. This optimization is made by the benefit of previously set weights calculated using MVDR algorithms. The performance of the proposed hybrid MVDR-LMS algorithm tested using MATLAB 2016a.