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31,456 Article Results

OperativeCriticalPointBug algorithm-local path planning of mobile robot avoiding obstacles

10.11591/ijeecs.v18.i3.pp1646-1656
Subir Kumar Das , Ajoy Kumar Dutta , Subir Kumar Debnath
For Autonomous Mobile Robot one of the biggest and interesting issues is path planning. An autonomous mobile robot should be able determine its own path to reach destination. This paper offers a new algorithm for mobile robot to plan a path in local environments with stationary as well as moving obstacles. For movable robots’ path planning OperativeCriticalPointBug (OCPB) algorithm, is a new Bug algorithm. This algorithm is carried out by the robot throughout the movement from source to goal, hence allowing the robot to rectify its way if a new obstacle comes into the route or any existing obstacle changes its route. According as, not only the robot tries to avoid clash with other obstacle but also tries a series of run time adjustment in its way to produce roughly a best possible path. During journey the robot is believed to be capable to act in an unknown location by acquiring information perceived locally. Using this algorithm the robot can avoid obstacle by considering its own as well as the obstacle’s dimension. The obstacle may be static or dynamic. The algorithm belongs to bug family.
Volume: 18
Issue: 3
Page: 1646-1656
Publish at: 2020-06-01

A modified symmetric local binary pattern for image features extraction

10.12928/telkomnika.v18i3.14256
Majed O.; Al-balqa Applied University Dwairi
The process of identifying images and patterns is one of the most important processes of digital image processing, which is used in many applications such as fingerprint recognition, face recognition and pattern recognition. Due to the large size of the image, the process of identifying the image requires a great time, which in turn leads us to extract some characteristics of the magnitude of the volume, which can be used as an identifier to retrieve the image or recognize it and thus we have devoted a lot of time to identify the image. In this research paper, a modified symmetric local binary pattern (MSLBP) method was proposed to extract texture features. The proposed algorithm was implemented on many digital fingerprint’s images and the local structure features of these images were obtained. Several image recognition experiments are conducted on these features and compared with other algorithms. The results of the proposed algorithm showed that the digital image was represented in a very small size and furthermore the speed and accuracy of image recognition based on the proposed method was increased significantly. Unlike the methods based on LBP, the proposed method gives the same features of the image even if the image was rotated with any angle.
Volume: 18
Issue: 3
Page: 1224-1228
Publish at: 2020-06-01

The new trend for search engine optimization, tools and techniques

10.11591/ijeecs.v18.i3.pp1568-1583
Asim Shahzad , Deden Witarsyah Jacob , Nazri Mohd Nawi , Hairulnizam Mahdin , Marheni Eka Saputri
Search Engines are used to search any information on the internet. The primary objective of any website owner is to list their website at the top of all the results in Search Engine Results Pages (SERPs). Search Engine Optimization is the art of increasing visibility of a website in Search Engine Result Pages. This art of improving the visibility of website requires the tools and techniques; This paper is a comprehensive survey of how a Search Engine (SE) works, types and parts of Search Engine and different techniques and tools used for Search Engine Optimization (SEO.) In this paper, we will discuss the current tools and techniques in practice for Search Engine Optimization.
Volume: 18
Issue: 3
Page: 1568-1583
Publish at: 2020-06-01

The flow of baseline estimation using a single omnidirectional camera

10.12928/telkomnika.v18i3.14797
Sukma Meganova; Politeknik Mekatronika Sanata Dharma Effendi , Dadet; Politeknik Elektronika Negeri Surabaya (PENS) Pramadihanto , Riyanto; Politeknik Elektronika Negeri Surabaya (PENS) Sigit
Baseline is a distance between two cameras, but we cannot get information from a single camera. Baseline is one of the important parameters to find the depth of objects in stereo image triangulation. The flow of baseline is produced by moving the camera in horizontal axis from its original location. Using baseline estimation, we can determined the depth of an object by using only an omnidirectional camera. This research focus on determining the flow of baseline before calculating the disparity map. To estimate the flow and to tracking the object, we use three and four points in the surface of an object from two different data (panoramic image) that were already chosen. By moving the camera horizontally, we get the tracks of them. The obtained tracks are visually similar. Each track represent the coordinate of each tracking point. Two of four tracks have a graphical representation similar to second order polynomial.
Volume: 18
Issue: 3
Page: 1633-1642
Publish at: 2020-06-01

Features detection based blind handover using kullback leibler distance for 5G HetNets systems

10.11591/ijai.v9.i2.pp193-202
Adnane El Hanjri , Aawatif Hayar , Abdelkrim Haqiq
The Fifth Generation of Mobile Networks (5G) is changing the cellular network infrastructure paradigm, and Small Cells are a key piece of this shift. But the high number of Small Cells and their low coverage involve more Handovers to provide continuous connectivity, and the selection, quickly and at low energy cost, of the appropriate one in the vicinity of thousands is also a key problem. In this paper, we propose a new method, to have an efficient, blind and rapid handover just by analysing Received Signal probability density function instead of demodulating and analysing Received Signal itself as in classical handover. The proposed method exploits KL Distance, Akaike Information Criterion (AIC) and Akaike weights, in order to decide blindly the best handover and the best Base Station (BS) for each user
Volume: 9
Issue: 2
Page: 193-202
Publish at: 2020-06-01

Design of optimal search engine using text summarization through artificial intelligence techniques

10.12928/telkomnika.v18i3.14028
Kaushik; Vignan Institute of Technology and Science Sekaran , P.; Vignan Institute of Technology and Science Chandana , J. Rethna Virgil; Vignan Institute of Technology and Science Jeny , Maytham N.; Al-Mustaqbal University College Meqdad , Seifedine; Beirut Arab Univeristy Kadry
Natural language processing is the trending topic in the latest research areas, which allows the developers to create the human-computer interactions to come into existence. The natural language processing is an integration of artificial intelligence, computer science and computer linguistics. The research towards natural Language Processing is focused on creating innovations towards creating the devices or machines which operates basing on the single command of a human. It allows various Bot creations to innovate the instructions from the mobile devices to control the physical devices by allowing the speech-tagging. In our paper, we design a search engine which not only displays the data according to user query but also performs the detailed display of the content or topic user is interested for using the summarization concept. We find the designed search engine is having optimal response time for the user queries by analyzing with number of transactions as inputs. Also, the result findings in the performance analysis show that the text summarization method has been an efficient way for improving the response time in the search engine optimizations.
Volume: 18
Issue: 3
Page: 1268-1274
Publish at: 2020-06-01

The physical and optical properties of AZO thin films on teflon substrate at low deposition temperature by spray pyrolysis

10.11591/ijeecs.v18.i3.pp1222-1228
Sofea Nabila Hazmin , F. S. S. Zahid , N. S. M. Sauki , M. H. Mamat , M. N. Amalina
This paper presents the physical and optical properties of AZO thin films on Teflon substrate at low deposition temperature by spray pyrolysis. In this study, the effect of different process parameters such as spray time and substrate to nozzle distance on the physical and optical characteristic of aluminium doped zinc oxide (AZO) deposited on Teflon substrates was investigated. The AZO thin films were successfully deposited onto Teflon substrate by spray pyrolysis technique at low deposition temperature. The physical analysis by X-ray diffraction (XRD) shows that the deposited Teflon substrate films have a preferred orientation along the direction (100) and (101). Optical measurements were conducted using Jasco/V-670 Ex Uv-Vis-NIR Spectrophotometer model to confirms that in visible ray it is possible to get good reflectance of AZO films with a reflection of 80%. The values of band gaps Eg were calculated from the spectra of UV-Visible reflectance that were vary between 3.06 and 3.14 eV. 
Volume: 18
Issue: 3
Page: 1222-1228
Publish at: 2020-06-01

Convolutional neural network for maize leaf disease image classification

10.12928/telkomnika.v18i3.14840
Mohammad; University of Trunojoyo Madura Syarief , Wahyudi; University of Trunojoyo Madura Setiawan
This article discusses the maize leaf disease image classification. The experimental images consist of 200 images with 4 classes: healthy, cercospora, common rust and northern leaf blight. There are 2 steps: feature extraction and classification. Feature extraction obtains features automatically using convolutional neural network (CNN). Seven CNN models were tested i.e AlexNet, virtual geometry group (VGG) 16, VGG19, GoogleNet, Inception-V3, residual network 50 (ResNet50) and ResNet101. While the classification using machine learning methods include k-Nearest neighbor, decision tree and support vector machine. Based on the testing results, the best classification was AlexNet and support vector machine with accuracy, sensitivity, specificity of 93.5%, 95.08%, and 93%, respectively.
Volume: 18
Issue: 3
Page: 1376-1381
Publish at: 2020-06-01

A hybrid algorithm for wave-front corrections applied to satellite-to-ground laser communication

10.12928/telkomnika.v18i3.12960
Mohammed Senan Al; University of Batna 2 Gobi , Djamel; University of Batna 2 Benatia , Mouadh; Université d’El Oued Bali
Laser communications hold accurate data rate for ground satellite links. The laser beam is transmitted through the atmosphere. The clear-air turbulence induces a number of phase distortions that damage wave-front. Adaptive optics (AO) treats wave front correction. The nature of AO systems is iterative; it can be integrated in metaheuristic algorithms such as genetic algorithm (GA). This paper presents improved version of algorithm for wave-front corrections. The improved algorithm is based on genetic algorithm (GA) and adaptive optics approach (OA). It is implemented in a computer simulation model called object-oriented matlab adaptive optics (OOMAO). The optimisation process involves best possible GA parameters as a function of population size, iteration count, and the actuators’ voltage intervals. Results show that the application of GA improves the performance of AO in wave-front corrections and the communication between satellite-to-ground laser links as well.
Volume: 18
Issue: 3
Page: 1259-1267
Publish at: 2020-06-01

Wireless communication system with frequency selective channel OFDM modulation technique

10.12928/telkomnika.v18i3.14683
Hayder; Islamic University Al Ibraheemi , Mazen M. A. Al; University of Al-Qadisiyah Ibraheemi
This paper introduces the design and implementation of a wireless communication system with MATLAB based on orthognal frequency division multiplexing technique (OFDM). The constructed system is consisting of transmitter, fading channel and receiver. At the transmitter, the transmitted signal first modulated with PSK modulation, and then multiplexed with OFDM technique to achieve a higher bit rates transmission. The signal was then transmitted through a frequency selective channel with 6 taps. In the receiver parity. The received faded signal processed to be de-multiplexed and de-modulated. Then, a frequency domain equalizer was adopted to remove the fading noise and the inter-symbol interference from the received signal that introduced due to the fading channel. In order to inspect the performance of the frequency equilizer, bit error rate for the overall system was calculated at the receiving point and to recover the original information signal. The simulation results of the designed system as well as the frequency equilizer showed a robustness against the frequency selective faded channel effects. The maximum obtained bit error rate was around 10-5, which means that original signal was effectively recovered.
Volume: 18
Issue: 3
Page: 1203-1208
Publish at: 2020-06-01

Insomnia analysis based on internet of things using electrocardiography and electromyography

10.12928/telkomnika.v18i3.14897
Novi; Universiti Teknikal Malaysia Melaka Azman , Mohd Khanapi Bin Abd; Universiti Teknikal Malaysia Melaka Ghani , S. R.; Universitas Nasional Wicaksono , Barru; Universitas Nasional Kurniawan , Viktor Vekky Ronald; Universitas Nasional Repi
Insomnia is a disorder to start, maintain, and wake up from sleep, has many sufferers in the world. For patients in remote locations who suffer from insomnia, which requires testing, the gold standard performed requires patients to take the time and travel to the health care center. By making alternatives to remote sleep insomnia testing using electrocardiography and electromyography connected to the internet of things can solve the problem of patients' access to treatment. Delivery of patient data to the server is done to make observations from the visualization of patient data in real-time. Furthermore, using artificial neural networks was used to classify EMG, ECG, and combine patient data to determine patients who have Insomnia get resulted in patient classification errors around 0.2% to 2.7%.
Volume: 18
Issue: 3
Page: 1406-1415
Publish at: 2020-06-01

Multilayer phosphor-in-glass packaging for the development in WLED color uniformity

10.12928/telkomnika.v19i3.17786
Huu Phuc; Industrial University of Ho Chi Minh City Dang , Phung Ton; Industrial University of Ho Chi Minh City That , Tri-Vien; Thu Dau Mot University Vu
When mentioning the remote phosphor structure, the most noticeable advantage is its higher luminous flux than any other structure’s. However, there are existing flaws in their color uniformity and color rendering index (CRI). Thus, the improvements in these two optic factors must be improved for the better usage of remote phosphor geometry in modern WLED devices. Many researchers have drawn their attention to this idea, and then it has become the primary objective for their studies. In this paper, we also try to accomplish the same result by adjusting the distances between the phosphor layers and through that enhance the optical properties of WLEDs. The mie-scattering theory is applied in our calculations to ensure the reliability and accuracy of experimental results. In our research, with distance d = 0.64 mm, the luminous flux grew 9.7% in comparison to the original value. At 0.84 mm, the distance d enhanced the color uniformity by two times. In the meantime, the CRI remained static during the course of experiment. With suitable application, these results can bring valuable contributions to the development of next WELDs generation.
Volume: 19
Issue: 3
Page: 977-982
Publish at: 2020-06-01

Behaviour of solar wireless sensor network in saharan region under different scenarios consideration

10.11591/ijece.v10i3.pp2797-2806
Boubakeur Hamlili , Khelifa Benahmed , Brahim Gasbaoui
This paper deals with the Wireless Sensor Network comportment in the south west region precisely Bechar city. Algeria has the highest technical and economic potentials for solar power exploitation in the Middle East and North Africa region. In this paper, the focus is on the behaviour of Wireless Sensor Network (WSNs) supplied by solar panel PV connected to node via boost converter (DC/DC) controlled by maximum power point tracking (MPPT) technique, using the incremental conductance (IC) algorithm to extract maximum power. In Our present work, many tests were carried out. The WSNs are examined under sever and different temperature and irradiation variation. The obtained result is satisfactory for our (WSNs) simulated in a MATLAB / SIMULINK environment. The performances of the proposed strategy controller give a satisfactory simulation results.
Volume: 10
Issue: 3
Page: 2797-2806
Publish at: 2020-06-01

Training configuration analysis of a convolutional neural network object tracker for night surveillance application

10.11591/ijai.v9.i2.pp282-289
Zulaikha Kadim , Mohd Asyraf Zulkifley , Nor Azwan Mohamed Kamari
Automated surveillance during the night is important as it is the period when crimes usually happened. By providing continuous monitoring, coupled with a real-time alert system, appropriate action can be taken immediately if a crime is detected. However, low lighting conditions during the night can degrade the quality of surveillance videos, where the captured images will have low contrast and less discriminative features. Consequently, these factors contribute to the problem of bad appearance representation of the object of interest in the tracking algorithm. Thus, a convolutional neural network-based object tracker for night surveillance is proposed by exploiting the deep feature strength in representing object features spatially and semantically. The proposed convolutional network consists of six layers that consist of three convolutional neural networks (CNN) and three fully connected (FC) layers. The network will be trained by using a binary classifier approach of objects and its background classes, which is updated on a fixed interval so that it fully encapsulates the changes in object appearance as it moves in the scene.  The algorithm has been tested with different sets of training data configurations to find the best optimum ones with regards to VOT2015 evaluation protocols, tested on 14-night surveillance videos. The results show that the configuration of a total of 250 training samples with a sample ratio of 4:1 between positive and negative data delivers the best performance for the sequence length of [1,550]. It can be inferred that more information on the object is required compared to the background, where the background might be homogeneous due to low lighting conditions. In conclusion, this algorithm is suitable to be implemented for night surveillance application.
Volume: 9
Issue: 2
Page: 282-289
Publish at: 2020-06-01

Application of recommendation system with AHP method and sentiment analysis

10.12928/telkomnika.v18i3.14778
Ira; Politeknik Elektronika Negeri Surabaya Prasetyaningrum , Kholid; Politeknik Elektronika Negeri Surabaya Fathoni , Tri Tangguh Jiwo; Politeknik Elektronika Negeri Surabaya Priyantoro
Over time, people needs are increasing. Needs that must be met, often cause problems in the people in determining a choice. People must make the right choice and according to their needs. Not an easy thing for people to make these choices. Therefore, a recommendation system is needed to support people in making decisions that fit their criteria. This research provides a system that can provide recommendations for decision support people according to their criteria, which are web-based. The decision-making system in this research uses the analytical hierarchy process (AHP) method. AHP is a multi-criteria decision-making method, which in this research one of the criteria is using sentiment analysis. Sentiment analysis is the process of understanding, extracting, and processing textual data to get sentiment information from an opinion sentence. The opinion sentiment value of each alternative will be included in the AHP calculation to get the best alternative recommendations according to the criteria of people. The result of this research is that the system can provide recommendations to people or users according to their criteria and alternatives as well as public opinion about each alternative.
Volume: 18
Issue: 3
Page: 1343-1353
Publish at: 2020-06-01
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