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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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IEIE Transactions on Smart Processing and Computing
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Journal DOI :
The Institute of Electronics Engineers of Korea
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Volume & Issues
Volume 5, Issue 4 - Aug 2016
Volume 5, Issue 3 - Jun 2016
Volume 5, Issue 2 - Apr 2016
Volume 5, Issue 1 - Feb 2016
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Image Recomposition Using Seam Carving and Insertion Considering the Rule of Thirds
Lee, Jon-Ha ; Kim, Kyumok ; Park, Jinwon ; Park, Ji Yeol ; Jung, Seung-Won ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 1~4
DOI : 10.5573/IEIESPC.2016.5.1.1
In this paper, we present an algorithm for adjusting the position of a user-specified object considering image aesthetics. Specifically, the user-specified object is positioned according to the rule of thirds by inserting or deleting unimportant seam lines from the image. To find such seam lines, a novel weight map is designed using the spatial and color distances from the object. We also design and analyze two approaches to seam carving and insertion. Experimental results show that the proposed method can be used as an effective semi-automatic image recomposition scheme.
Theoretical Analysis of the Optical Filtering Effect on a Directly Modulated Reflective Semiconductor Optical Amplifier
Shin, Beomsoo ; Oh, Sangyeol ; Lee, Jaehoon ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 5~9
DOI : 10.5573/IEIESPC.2016.5.1.5
The modulation bandwidth of a reflective semiconductor optical amplifier (RSOA) is limited by carrier lifetime. Therefore, it is hard to directly modulate an RSOA with high-speed electrical signals. We theorize that an optical filter can act as an optical equalizer, compensating for the narrow bandwidth limitation imposed by the RSOA. By modeling a time-varying RSOA with a modified transfer matrix method (TMM), we simulated 25 Gbps operation of an RSOA with optical filtering effects. We investigated the impact of detuning the center wavelength of the optical filter on the modulation of an RSOA. The numerical results show that it is possible to modulate an RSOA with an optical filtering effect at 25 Gbps without electronic equalization or digital signal processing.
Low-Power Fully Digital Voltage Sensor using 32-nm FinFETs
Nguyen, H.V. ; Kim, Youngmin ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 10~16
DOI : 10.5573/IEIESPC.2016.5.1.10
In this paper, a design for a fully digital voltage sensor using a 32-nm fin-type field-effect transistor (FinFET) is presented. A new characteristic of the double gate p-type FinFET (p-FinFET) is examined and proven appropriate for sensing voltage variations. On the basis of this characteristic, a novel technique for designing low-power voltage-to-time converters is presented. Then, we develop a digital voltage sensor with a voltage range of 0.7 to 1.1V at a 50-mV resolution. The performance of the proposed sensor is evaluated under a range of voltages and process variations using Simulation Program with Integrated Circuit Emphasis (SPICE) simulations, and the sensor is proven capable of operating under ultra-low power consumption, high linearity, and fairly high-frequency conditions (i.e., 100 MHz).
On the Training Time of Machine Learners for Automatic Classification in Multi-Level Security Systems
Engelstad, Paal E. ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 17~21
DOI : 10.5573/IEIESPC.2016.5.1.17
This paper investigates the importance of the computational overhead when machine learning methods, such as SVM, LASSO, AdaBoosting and AdaBagging, are used for automatic security classification.
Design of a Luenberger Observer-based Current Sensorless Multi-loop Control for Boost Converters
Li, Xutao ; Chen, Minjie ; Shinohara, Hirofumi ; Yoshihara, Tsutomu ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 22~28
DOI : 10.5573/IEIESPC.2016.5.1.22
Multi-loop control of a boost converter needs a current-sensing circuit to detect the inductor current. Current sensorless multi-loop control reduces the cost, size and weight of the converter. The Luenberger observer (LO) is widely used to estimate the inductor current for current sensorless control of a switching converter. However, the design of the LO-based sensorless multi-loop control has not been well presented, so far. In this paper, a closed-loop characteristics evaluation method is proposed to design an LO-based current sensorless multi-loop control for boost converters. Simulations show evaluations of the closed-loop characteristics. Practical experiments on a digital processor confirm the simulations.
Using DSP Algorithms for CRC in a CAN Controller
Juan, Ronnie O. Serfa ; Kim, Hi Seok ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 29~34
DOI : 10.5573/IEIESPC.2016.5.1.29
A controller area network (CAN) controller is an integral part of an electronic control unit, particularly in an advanced driver assistance system application, and its characteristics should always be advantageous in all aspects of functionality especially in real time application. The cost should be low, while maintaining the functionality and reliability of the technology. However, a CAN protocol implementing serial operation results in slow throughput, especially in a cyclical redundancy checking (CRC) unit. In this paper, digital signal processing (DSP) algorithms are implemented, namely pipelining, unfolding, and retiming the CAN controller in the CRC unit, particularly for the encoder and decoder sections. It must attain a feasible iteration bound, a critical path that is appropriate for a CAN system, and must obtain a superior design of a high-speed parallel circuit for the CRC unit in order to have a faster transmission rate. The source code for the encoder and decoder was formulated in the Verilog hardware description language.
Modelling a Stand-Alone Inverter and Comparing the Power Quality of the National Grid with Off-Grid System
Algaddafi, Ali ; Brown, Neil ; Rupert, Gammon ; Al-Shahrani, Jubran ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 35~42
DOI : 10.5573/IEIESPC.2016.5.1.35
Developments in power electronics have enabled the widespread application of Pulse Width Modulation (PWM) inverters, notably for connecting renewable systems to the grid. This study demonstrates that a high-quality power can be achieved using a stand-alone inverter, whereby the comparison between the power quality of the stand-alone inverter with battery storage (off-grid) and the power quality of the utility network is presented. Multi-loop control techniques for a single phase stand-alone inverter are used. A capacitor current control is used to give active damping and enhance the transient and steady state inverter performance. A capacitor current control is cheaper than the inductor current control, where a small current sensing resistor is used. The output voltage control is used to improve the system performance and also control the output voltage. The inner control loop uses a proportional gain current controller and the outer loop is implemented using internal model control proportional-integral-derivative to ensure stability. The optimal controls are achieved by using the Sisotool tool in MATLAB/Simulink. The outcome of the control scheme of the numerical model of the stand-alone inverter has a smooth and good dynamic performance, but also a strong robustness to load variations. The numerical model of the stand-alone inverter and its power quality are presented, and the power quality is shown to meet the IEEE 519-2014. Furthermore, the power quality of the off-grid system is measured experimentally and compared with the grid power, showing power quality of off-grid system to be better than that of the utility network.
Plain Fingerprint Classification Based on a Core Stochastic Algorithm
Baek, Young-Hyun ; Kim, Byunggeun ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 43~48
DOI : 10.5573/IEIESPC.2016.5.1.43
We propose plain fingerprint classification based on a core stochastic algorithm that effectively uses a core stochastic model, acquiring more fingerprint minutiae and direction, in order to increase matching performance. The proposed core stochastic algorithm uses core presence/absence and contains a ridge direction and distribution map. Simulations show that the fingerprint classification accuracy is improved by more than 14%, on average, compared to other algorithms.
Visual Attention Detection By Adaptive Non-Local Filter
Anh, Dao Nam ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 49~54
DOI : 10.5573/IEIESPC.2016.5.1.49
Regarding global and local factors of a set of features, a given single image or multiple images is a common approach in image processing. This paper introduces an application of an adaptive version of non-local filter whose original version searches non-local similarity for removing noise. Since most images involve texture partner in both foreground and background, extraction of signified regions with texture is a challenging task. Aiming to the detection of visual attention regions for images with texture, we present the contrast analysis of image patches located in a whole image but not nearby with assistance of the adaptive filter for estimation of non-local divergence. The method allows extraction of signified regions with texture of images of wild life. Experimental results for a benchmark demonstrate the ability of the proposed method to deal with the mentioned challenge.
Hybrid Multi-System-on-Chip Architecture as a Rapid Development Approach for a High-Flexibility System
Putra, Rachmad Vidya Wicaksana ; Adiono, Trio ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 55~62
DOI : 10.5573/IEIESPC.2016.5.1.55
In this paper, we propose a hybrid multi.system-on-chip (H-MSoC) architecture that provides a high-flexibility system in a rapid development time. The H-MSoC approach provides a flexible system-on-chip (SoC) architecture that is easy to configure for physical- and application-layer development. The physical- and application-layer aspects are dynamically designed and modified; hence, it is important to consider a design methodology that supports rapid SoC development. Physical layer development refers to intellectual property cores or other modular hardware (HW) development, while application layer development refers to user interface or application software (SW) development. H-MSoC is built from multi-SoC architectures in which each SoC is localized and specified based on its development focus, either physical or application (hybrid). Physical HW development SoC is referred to as physical-SoC (Phy-SoC) and application SW development SoC is referred to as application-SoC (App-SoC). Phy-SoC and App-SoC are connected to each other via Ethernet. Ethernet was chosen because of its flexibility, high speed, and easy configuration. For prototyping, we used a LEON3 SoC as the Phy-SoC and a ZYNQ-7000 SoC as the App-SoC. The proposed design was proven in real-time tests and achieved good performance.
Improvement of Shielding for Electromagnetic Compatibility
Chien, Tang Tan ; Tu, Bui Thi Minh ; Do, Tran Nguyen ;
IEIE Transactions on Smart Processing and Computing, volume 5, issue 1, 2016, Pages 63~69
DOI : 10.5573/IEIESPC.2016.5.1.63
This paper presents methods to improve the effectiveness of electromagnetic shielding. The slit appears in an enclosure's surface to ventilate. Slits may also appear due to power supply lines or to serve as a communication link between electronic circuits inside and outside the box. We simulated electromagnetic radiation in different conditions in order to propose a method to improve the effectiveness of electromagnetic shielding to ensure electromagnetic compatibility using CST software (Computer Simulation Technology).