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INDONESIA
Indonesian Journal of Electrical Engineering and Computer Science
Published by Institute of Advanced Engineering and Science
ISSN : 25024752     EISSN : 25024760     DOI : -
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Articles 50 Documents
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Search results for , issue "Vol 10, No 7: November 2012" : 50 Documents clear
Non-Specific Person Continuous Speech Identification in Second Language using BPR Guangming Xian; Biqing Zeng; Qiaoyun Yun; Xiongwen Pang
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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Abstract

Second language speech recognition is an important technical means of man-machine communication system. In this paper, we propose a biomimetic pattern recognition (BPR) algorithm for non specific person continuous speech identification in second language. Feature parameters are extracted directly from single number sample being segmented according to Mel cepstral way. BPR-based connected number recognition experiments show that the proposed method with better identification performance in second language than NN neural network and SVM. From non specific person continuous speech recognition experiments, we show that the BPR algorithm greatly improves word recognition accuracy and has good recognition ability without causing poorer performance in second language. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1550
Mean-square Error Distortion Computation Model Based on Wireless Sensor Network Weiming Yang; Jian Zhang; Jinxiang Peng
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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Abstract

On the basis of the rate-distortion theory, a new projection of the macroblock mode about the inner and mutual compiling frame is presented in this paper, and the MSE distortion computation is built. This method can acquire the optimal control point in the rate-distortion curve under the code error environment from the global optimization perspective, not only self-adaptively adjusting the quantization parameter under given network bandwidth but also refreshing inner macroblock frame according to the current probability of loss of network package, and can play an important role in counteracting the channel code error, which has a good reference value in the way of transmitting robust video code in wireless environment and allocating resources. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1568
Research and Analysis of CMMI Process Improvement Based on SQCS System Yinglan Fang; Bing Han; Weifu Zhou
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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Abstract

Traditional software development methods have been unable to meet the software implementation quality guarantee with current cross-cutting and a variety of system features.  Over the years using complex project, it continuously explore and in-depth study of the CMMI quality system application. The project thoughts are applied to the complicated software development process management and quality assurance. With new ideas and methods, it achieves effectively control to multi-dimensional and multi-level heterogeneous feature model system of the software engineering quality. So it can enhance software efficiency and quality of development. After the results analysis of implementation in recent years, the system has a certain degree of practicality, maneuverability and popularization. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1584
The Application of Normalized Covariance in Video Mosaicing GUO Ke you; Ji Bin
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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Abstract

Considering the mismatch and the high computational complexity of video mosaicing, a fast stitching method based on the normalized covariance is proposed. Firstly, the image corner features are extracted using the SURF algorithm and the corresponding matching points are found using the nearest neighbor method. The least square method is used to filter the matching points and accurately match the point-pair. And then, the homography matrix is got and can be used in finding the overlapping area of two images. The optimal homography matrix is obtained according to the normalization covariance and the bidirectional matching by which the video mosaicing is finished. Finally, the bilinear interpolation algorithm and the weighted average method are used to get a realistic and seamless image that retains high image resolution. The experimental results show that this algorithm can obtain better parameters estimation values and has smaller calculations as well as good robustness so as to stitch the video fast and seamlessly. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1453
Multi-island Genetic Algorithm Opetimization of Suspension System Jing-Jun Zhang; Li-Wei Xu; Rui-Zhen Gao
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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Abstract

The suspension and the car's operating stability are closely linked. Through the optimization of the suspension, it can improve the operating stability of vehicle, which is very meaningful to enhance the performance of modern cars. With the development of science and technology, the traditional optimization methods often appear insufficient when it deals with the multi-objective optimization problem of the automotive suspension. As a kind of improved genetic algorithm, the multi-island genetic algorithm can handle the multi-objective problem very well. In order to improve the vehicle handling stability, in this paper, the multi-island genetic algorithm is used to optimize the suspension parameters, combined with the iSight-FD and the Adams/car. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1563
Trellis-Coded Quantization of Phases in MISO Wireless Systems Jianfeng Zhang; Dongjian He; Yong Fang; Lvwen Huang
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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Abstract

This correspondence considers multiple-input single-output (MISO) wireless systems with equal gain transmission (EGT) at the transmitter and maximum ratio combining (MRC) at the receiver. In such systems, the receiver feedbacks the elemental phases of beam-forming vectors to the transmitter. Due to finite feedback rate, the elemental phases of beam-forming vectors have to be quantized effectively before feedback. This correspondence makes use of the trellis-coded quantization (TCQ) to quantize elemental phases of beam-forming vectors. The principle of TCQ and its application to phase quantization are introduced in detail. Representative simulation results are given to verify the superiority of TCQ phase quantization over other quantization schemes. The research results can be applied to the image information such as wireless transmission systems on many agricultural robots to work together, improve the efficiency and reliability of information transmission. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1579
Dynamic Frequency Allocation in SLICE Considering both BER and Distance Lei Wang; Min Zhang; Hui Ding; Lifang Zhang; Shanguo Huang; Xin Chen
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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Abstract

Proposed in this paper is a dynamic resource-aware routing and frequency slots allocation scheme with consideration of both BER requirement and distance adaptive modulation (RA-BERR-DA) for spectrum-sliced elastic optical path networks (SLICE).Numerical simulations are conducted to analysis network performance such as blocking rate and the number of used frequency slots. The results demonstrate that this scheme is able to decrease traffic blocking and improve resource utilization in dynamic spectrum assignment. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1448
Video Defogging Based on Adaptive Tolerance Yu Linan; Piao Yan; Yan Xiaoyuan
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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Abstract

Dark channel prior is a kind of statistics of the haze-free outdoor images, which is widely used in image defogging. But when the image contains a large bright region, such as sky and white object, the prior will cause color distortion in these bright regions because of the underestimated transmission. To solve this problem, a video defogging technology based on adaptive tolerance is presented in this paper, and it is applied to video defogging by combining with the guided filter. First, the transmission of each video frame is estimated according to the dark channel prior, and then it is fast refined by the guided filter for restoration. If a large bright region exists in the video frame, the transmission of these regions will be corrected according to the adaptive tolerance, which avoids the color distortion in the video defogging. For the video of dynamic scenes which are caused by camera motion, each frame is defogged as a single image. But for the video of static scenes whose background is almost invariant, the transmission of the background is estimated and used for the defogging of all the frames instead of estimating the transmission of each frame. In this way, the rate of video defogging is greatly improved. Experimental results show that the algorithm has a strong applicability, and the proposed method can be further used for many applications, such as outdoor surveillance, remote sensing and intelligent vehicles. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1556
Ripe Fuji Apple Detection Model Analysis in Natural Tree Canopy Lvwen Huang; Dongjian He
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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Abstract

In this work we develop a novel approach for the automatic recognition of red Fuji apples within a tree canopy using three distinguishable color models in order to achieve automated harvesting. How to select the recognition model is important for the certain intelligent harvester employed to perform in real orchards. The L*a*b color model, HSI (Hue, Saturation and Intensity) color model and LCD color difference model, which are insensitive to light conditions, are analyzed and applied to detect the fruit under the different lighting conditions because the fruit has the highest red color among the objects in the image. The fuzzy 2-partition entropy, which could discriminate the object and the background in grayscale images and is obtained from the histogram, is applied to the segment the Fuji apples under complex backgrounds. A series of mathematical morphological operations are used to eliminate segmental fragments after segmentation. Finally, the proposed approach is validated on apple images taken in natural tree canopies. A contribution reported in this work, is the voting scheme added to the natural tree canopy which recognizes apples under different light influences. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1574
Multifield Coupling Analysis of Integrated Motor Propulsor Liang Jinghui; Zhang Xiaofeng; Qiao Mingzhong; Li Geng
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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Abstract

A novel Integrated Motor Propulsor (IMP) is designed and analyzed in this paper. This IMP uses permanent magnet motor as its propelling machine , employs Halbach array on its rotor, and has a thinner rotor and bigger airgap. As owning complex structure and complicated working condition, IMP itself involves in the cross of multyple physics, and traditional analysis method can not meet with the needs in the design and calculation of this device. In this paper, A field-circuit-motion coupled time-stepping finite element analysis (FEA) model is presented to analyze the field-circuit coupled model of this device, cosidering influence from external circuit (for example, inverters). Multi-field coupling method is used and electromagnetism-thermal coupled model is established and direct coupling method is given to calculate electromagnetism-thermal coupling problem, considering interactions between two fields. At the end of this paper, according to the comparison between experiment and calculation results, effectiveness of the method presented above is verifid. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1220

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