Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003934
S. Sethi, R. Upadhyay
Brain Computer Interface is a reliable communication interface between human brain and external world. It translates human brain electrical activity to useful command by extracting meaningful features from Electroencephalogram signals. In present work, feature extraction techniques and classification methods are proposed for implementation of Brain Computer Interface system. Proposed methodology is carried out in four methodological steps. At first step, segmentation and windowing of Electroencephalogram signals are performed. The S-transform of segmented Electroencephalogram signals is evaluated in second step. At third step, mean and maximum values of Katz's Fractal Dimension are calculated from S-transform coefficients as features. Classification of extracted features is carried out in the fourth step using three machine learning techniques viz. Random Forest, Artificial Neural Network and Support Vector Machine. Classification results reflect the efficiency of S-transform based feature extraction technique in Brain Computer Interface implementation.
{"title":"Classification of mental tasks using S-transform based fractal features","authors":"S. Sethi, R. Upadhyay","doi":"10.1109/COMPTELIX.2017.8003934","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003934","url":null,"abstract":"Brain Computer Interface is a reliable communication interface between human brain and external world. It translates human brain electrical activity to useful command by extracting meaningful features from Electroencephalogram signals. In present work, feature extraction techniques and classification methods are proposed for implementation of Brain Computer Interface system. Proposed methodology is carried out in four methodological steps. At first step, segmentation and windowing of Electroencephalogram signals are performed. The S-transform of segmented Electroencephalogram signals is evaluated in second step. At third step, mean and maximum values of Katz's Fractal Dimension are calculated from S-transform coefficients as features. Classification of extracted features is carried out in the fourth step using three machine learning techniques viz. Random Forest, Artificial Neural Network and Support Vector Machine. Classification results reflect the efficiency of S-transform based feature extraction technique in Brain Computer Interface implementation.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"8 1","pages":"38-43"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72574020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003967
Shweta Garg, S. Yadav
A novel polarization independent transmissive type frequency selective surface has been designed for three applications, these are WiFi, WiMax and WLAN. The uses of these applications are increasing day by day so it is important to enhance the working quality of such applications. In this paper a novel FSS has been designed based on these applications using FR4 Epoxy substrate having dielectric constant 4.4 and tangent loss 0.025. The designed FSS is working as both bandpass filter resonating at 2.5, 3.5 & 5.5 GHz frequencies and bandstop filter resonating at 3 and 4.3 GHz. In the design of proposed FSS, it consists of three different shape aperture elements which are creviced into metallic sheet placed on dielectric substrate and the 8×8 array has been proposed in the paper. For the whole structure simulation microwave software (CST MW studio and Ansys HFSS electromagnetic software) has been used. In this paper parametric analysis of theta and phi have been also shown which represents polarization performance of the proposed design. The simulated results show that about 95% of power is reflected by the FSS sheet. The proposed filter has advantage of resonating at multiple frequencies, polarization independent & wide in bandwidth. At the end proposed design is also verified in ANSYS HFSS software and the results are slightly varied at higher resonating frequency.
{"title":"A novel polarization independent transmissive type frequency selective surface for WiFi, WiMax & WLAN applications","authors":"Shweta Garg, S. Yadav","doi":"10.1109/COMPTELIX.2017.8003967","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003967","url":null,"abstract":"A novel polarization independent transmissive type frequency selective surface has been designed for three applications, these are WiFi, WiMax and WLAN. The uses of these applications are increasing day by day so it is important to enhance the working quality of such applications. In this paper a novel FSS has been designed based on these applications using FR4 Epoxy substrate having dielectric constant 4.4 and tangent loss 0.025. The designed FSS is working as both bandpass filter resonating at 2.5, 3.5 & 5.5 GHz frequencies and bandstop filter resonating at 3 and 4.3 GHz. In the design of proposed FSS, it consists of three different shape aperture elements which are creviced into metallic sheet placed on dielectric substrate and the 8×8 array has been proposed in the paper. For the whole structure simulation microwave software (CST MW studio and Ansys HFSS electromagnetic software) has been used. In this paper parametric analysis of theta and phi have been also shown which represents polarization performance of the proposed design. The simulated results show that about 95% of power is reflected by the FSS sheet. The proposed filter has advantage of resonating at multiple frequencies, polarization independent & wide in bandwidth. At the end proposed design is also verified in ANSYS HFSS software and the results are slightly varied at higher resonating frequency.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"71 1","pages":"216-220"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80992410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003943
Pancham Kumar, J. Sahariya, A. Soni
In present paper, we discuss the first principle optoelectronic properties for ZnGa2X4 (X= S, Se) compounds. The current work have been carried out using full-potential linearized augmented plane wave (FP-LAPW) mechanism, employing density functional theory (DFT) within Perdew-Burke-Ernzerhof (PBEsol) exchange correlation approximation over Wien2k package. A direct band gap of 2.38eV and 1.51eV is found for ZnGa2S4 and ZnGa2Se4 compounds, at gama-symmetry point of Brillion zone (BZ). Moreover, optical properties like dielectric functions, absorption coefficient, refractive index, reflectivity, loss and conductivity spectra are also reported over here in order to examine their usefulness in solar cell and other optoelectronic devices.
{"title":"Computational investigations of electronic and optical properties of ZnGa2X4 (X= S, Se): A promising solar PV material","authors":"Pancham Kumar, J. Sahariya, A. Soni","doi":"10.1109/COMPTELIX.2017.8003943","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003943","url":null,"abstract":"In present paper, we discuss the first principle optoelectronic properties for ZnGa2X4 (X= S, Se) compounds. The current work have been carried out using full-potential linearized augmented plane wave (FP-LAPW) mechanism, employing density functional theory (DFT) within Perdew-Burke-Ernzerhof (PBEsol) exchange correlation approximation over Wien2k package. A direct band gap of 2.38eV and 1.51eV is found for ZnGa2S4 and ZnGa2Se4 compounds, at gama-symmetry point of Brillion zone (BZ). Moreover, optical properties like dielectric functions, absorption coefficient, refractive index, reflectivity, loss and conductivity spectra are also reported over here in order to examine their usefulness in solar cell and other optoelectronic devices.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"85 1","pages":"83-88"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81094528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003990
Anusha Yalavarthi, K. Veeraswamy, K. Sheela
Nowadays content-based image retrieval (CBIR) is the most powerful and popular method for retrieving color, shape, and texture. In this paper, we proposed content based image retrieval using enhanced Gabor wavelet transform for increasing the retrieval efficiency. Gabor wavelet transform (GWT) is widely concentrated on the combination of features of plane wave and Gabor function to form non-orthogonal functions. The challenge property of the training database images using GWT is decomposed into different scaling and orientation with different filters to reduce the unwanted information of the images. The proposed experimental results of the Gabor wavelet transform give excellent results in terms of retrieval efficiency also computational rates as compared to existing techniques.
{"title":"Content based image retrieval using enhanced Gabor wavelet transform","authors":"Anusha Yalavarthi, K. Veeraswamy, K. Sheela","doi":"10.1109/COMPTELIX.2017.8003990","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003990","url":null,"abstract":"Nowadays content-based image retrieval (CBIR) is the most powerful and popular method for retrieving color, shape, and texture. In this paper, we proposed content based image retrieval using enhanced Gabor wavelet transform for increasing the retrieval efficiency. Gabor wavelet transform (GWT) is widely concentrated on the combination of features of plane wave and Gabor function to form non-orthogonal functions. The challenge property of the training database images using GWT is decomposed into different scaling and orientation with different filters to reduce the unwanted information of the images. The proposed experimental results of the Gabor wavelet transform give excellent results in terms of retrieval efficiency also computational rates as compared to existing techniques.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"6 1 1","pages":"339-343"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85667212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003963
Nidhika Yadav, N. Chatterjee
Rough Set is a mathematical tool to find patterns hidden in data with uncertainty. A major step for reduction of high dimension data, present in various forms, is selection of appropriate features. In this work we propose a new indiscernibility relation based on clusters, and compare its effectiveness with that of classical Rough Set based indiscernibility. In particular, we study the proposed Rough Set based scheme for feature set reduction. Rough-Cluster (RC) based approximate algorithms are proposed. The major advantage of these algorithms over the classical method is that they work well even without data discretization. The accuracy, measured in terms of the proportion of correctly classified data samples, is obtained on various standard data sets. The results are found to be on par with those obtained through classical Rough Set based technique for the problem of feature selection.
{"title":"A novel approach for feature selection using Rough Sets","authors":"Nidhika Yadav, N. Chatterjee","doi":"10.1109/COMPTELIX.2017.8003963","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003963","url":null,"abstract":"Rough Set is a mathematical tool to find patterns hidden in data with uncertainty. A major step for reduction of high dimension data, present in various forms, is selection of appropriate features. In this work we propose a new indiscernibility relation based on clusters, and compare its effectiveness with that of classical Rough Set based indiscernibility. In particular, we study the proposed Rough Set based scheme for feature set reduction. Rough-Cluster (RC) based approximate algorithms are proposed. The major advantage of these algorithms over the classical method is that they work well even without data discretization. The accuracy, measured in terms of the proportion of correctly classified data samples, is obtained on various standard data sets. The results are found to be on par with those obtained through classical Rough Set based technique for the problem of feature selection.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"18 1","pages":"195-199"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82386198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003999
Humera Aqeel, Syed Taqi Ali
Attribute-Based Encryption(ABE) came up as an significant cryptographic tool to envision secure fine-grained data sharing and access control. In this paper, we elaborate ABE to more expressive Ciphertext-policy Attribute-Based Encryption(CP-ABE) in consideration with Revocation which is a major issue to achieve in ABE. Specifically, we use direct revocation ABE which permits the trusted authority to revoke users by simply updating revocation list, without interacting with the non-revoked users which is not likely with respect to indirectly revocable ABE. We give a concrete construction and provides certain comparison parameters in order to determine efficiency of our scheme over other existing scheme.
{"title":"Directly revocable Attribute Based Encryption scheme under Ciphertext-policy","authors":"Humera Aqeel, Syed Taqi Ali","doi":"10.1109/COMPTELIX.2017.8003999","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003999","url":null,"abstract":"Attribute-Based Encryption(ABE) came up as an significant cryptographic tool to envision secure fine-grained data sharing and access control. In this paper, we elaborate ABE to more expressive Ciphertext-policy Attribute-Based Encryption(CP-ABE) in consideration with Revocation which is a major issue to achieve in ABE. Specifically, we use direct revocation ABE which permits the trusted authority to revoke users by simply updating revocation list, without interacting with the non-revoked users which is not likely with respect to indirectly revocable ABE. We give a concrete construction and provides certain comparison parameters in order to determine efficiency of our scheme over other existing scheme.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"157 1","pages":"383-387"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86337614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003972
A. Murthy, S. Rao, M. Herbert, Navin Karanth P
This study is based on experimental approach to linear displacement measurement using RGB color coding algorithm. This system is based on the auto-calibration procedure which can be implemented in a circuit, based on the temporal changes in the intensity of light, with the help of a light dependent resistor (LDR). The system consists of two LDRs and an LED placed on one side and an RGB color coded reflective paper on the opposite side. PIC microcontroller is used for powering the LED, processing of data for feedback control and to display the output on an LCD. LDR1 reading is used for displaying the relative linear distance, by mapping the voltage as a function of distance. This reading is used as a feedback to a PID controller to correct for the deviation in the measurement. Extensive experimental observations are conducted to analyze the reliability of the results in accordance to the wavelength of light reflected, the signal voltage and power output of the system. Investigation of the optimum positioning of the LED and the reflective RGB color coded paper is performed by repeatability analysis and hysteresis effects. Furthermore, the efficiency of the system is increased by implementing a PID controller upon investigating the different controller design, viz. P, PI and PID. A high resolution of 0.1 [mm] is obtained for such a simple and economical system, thereby making it highly efficient, in both minute measurements as well as over the entire bandwidth range of the visible light spectrum.
{"title":"Experimental study on linear displacement measurement sensor using RGB color variation technique with PID controller","authors":"A. Murthy, S. Rao, M. Herbert, Navin Karanth P","doi":"10.1109/COMPTELIX.2017.8003972","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003972","url":null,"abstract":"This study is based on experimental approach to linear displacement measurement using RGB color coding algorithm. This system is based on the auto-calibration procedure which can be implemented in a circuit, based on the temporal changes in the intensity of light, with the help of a light dependent resistor (LDR). The system consists of two LDRs and an LED placed on one side and an RGB color coded reflective paper on the opposite side. PIC microcontroller is used for powering the LED, processing of data for feedback control and to display the output on an LCD. LDR1 reading is used for displaying the relative linear distance, by mapping the voltage as a function of distance. This reading is used as a feedback to a PID controller to correct for the deviation in the measurement. Extensive experimental observations are conducted to analyze the reliability of the results in accordance to the wavelength of light reflected, the signal voltage and power output of the system. Investigation of the optimum positioning of the LED and the reflective RGB color coded paper is performed by repeatability analysis and hysteresis effects. Furthermore, the efficiency of the system is increased by implementing a PID controller upon investigating the different controller design, viz. P, PI and PID. A high resolution of 0.1 [mm] is obtained for such a simple and economical system, thereby making it highly efficient, in both minute measurements as well as over the entire bandwidth range of the visible light spectrum.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"45 1","pages":"241-247"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82883091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8004042
Priyabrata Shaw, M. Veerachary
In this paper, a H∞ robust controller is designed for high-gain boost converter (HGBC) using mixed-sensitivity method. This controller design is based on the model, which uses a linear time-invariant approximation of nonlinear time-variant PWM converter that describes approximately the behavior of the system. The design of voltage-mode controller for boost converter is challenging, as its duty cycle to output voltage transfer function has a right half plane zero (RHPZ), shows non-minimum phase (NMP) behavior. Considering the mixed-sensitivity analysis into account the H∞ controller is designed to stabilize and guarantee a constant output voltage regardless of perturbations in input voltage and load. The closed-loop HGBC system is simulated in PSIM simulator, which shows excellent voltage regulation in presence of load and source disturbances. This clearly indicates that the mixed-sensitivity based H∞ controller yielding better performance and do not depend on the operating point of the converter.
{"title":"Mixed-sensitivity based robust H∞ controller design for high-gain boost converter","authors":"Priyabrata Shaw, M. Veerachary","doi":"10.1109/COMPTELIX.2017.8004042","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8004042","url":null,"abstract":"In this paper, a H∞ robust controller is designed for high-gain boost converter (HGBC) using mixed-sensitivity method. This controller design is based on the model, which uses a linear time-invariant approximation of nonlinear time-variant PWM converter that describes approximately the behavior of the system. The design of voltage-mode controller for boost converter is challenging, as its duty cycle to output voltage transfer function has a right half plane zero (RHPZ), shows non-minimum phase (NMP) behavior. Considering the mixed-sensitivity analysis into account the H∞ controller is designed to stabilize and guarantee a constant output voltage regardless of perturbations in input voltage and load. The closed-loop HGBC system is simulated in PSIM simulator, which shows excellent voltage regulation in presence of load and source disturbances. This clearly indicates that the mixed-sensitivity based H∞ controller yielding better performance and do not depend on the operating point of the converter.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"211 1","pages":"612-617"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89041178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8004013
Anirudh B.K., Vivek Venkatraman, Abhishek Kumar, Sumam David S.
Video processing applications have become increasingly difficult to implement on hardware, owing to the complex computer vision algorithms involved. This paper presents a real-time video processing architecture based on hardware/software co-design that improves execution speed and reduces the time to market of applications. We have implemented this framework for handwritten digit recognition on the Zybo Zynq-7000 ARM/FPGA SoC using Vivado High Level Synthesis (HLS) and Xillybus tools. Histogram of Oriented Gradients (HOG) feature extraction algorithm has been optimised for hardware execution and acceleration techniques have been applied on Vivado HLS to achieve a speed up of 38.89 for the HOG algorithm and recognition accuracy of 95.6%. Low precision arithmetic along with our approximations for costly functions, produced this significant gain in throughput by reducing 90% of the hardware resources required with just a marginal accuracy reduction by 1%. An overall performance improvement of 77% is obtained through hardware/software co-design over software execution. The framework identified digits seamlessly in a real-time video stream at 30 frames per second and enabled high frame rate video processing.
由于涉及复杂的计算机视觉算法，视频处理应用越来越难以在硬件上实现。本文提出了一种基于软硬件协同设计的实时视频处理体系结构，提高了执行速度，缩短了应用程序的上市时间。我们使用Vivado High Level Synthesis (HLS)和Xillybus工具在Zybo Zynq-7000 ARM/FPGA SoC上实现了手写数字识别框架。优化了面向梯度直方图(Histogram of Oriented Gradients, HOG)特征提取算法的硬件执行，并在Vivado HLS上应用了加速技术，实现了HOG算法的加速38.89，识别准确率95.6%。低精度算法以及我们对昂贵函数的近似，通过减少所需的90%的硬件资源而仅减少1%的精度，从而产生了吞吐量的显著增加。通过硬件/软件协同设计而不是软件执行，总体性能提高了77%。该框架以每秒30帧的速度在实时视频流中无缝识别数字，并实现高帧率视频处理。
{"title":"Accelerating real-time computer vision applications using HW/SW co-design","authors":"Anirudh B.K., Vivek Venkatraman, Abhishek Kumar, Sumam David S.","doi":"10.1109/COMPTELIX.2017.8004013","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8004013","url":null,"abstract":"Video processing applications have become increasingly difficult to implement on hardware, owing to the complex computer vision algorithms involved. This paper presents a real-time video processing architecture based on hardware/software co-design that improves execution speed and reduces the time to market of applications. We have implemented this framework for handwritten digit recognition on the Zybo Zynq-7000 ARM/FPGA SoC using Vivado High Level Synthesis (HLS) and Xillybus tools. Histogram of Oriented Gradients (HOG) feature extraction algorithm has been optimised for hardware execution and acceleration techniques have been applied on Vivado HLS to achieve a speed up of 38.89 for the HOG algorithm and recognition accuracy of 95.6%. Low precision arithmetic along with our approximations for costly functions, produced this significant gain in throughput by reducing 90% of the hardware resources required with just a marginal accuracy reduction by 1%. An overall performance improvement of 77% is obtained through hardware/software co-design over software execution. The framework identified digits seamlessly in a real-time video stream at 30 frames per second and enabled high frame rate video processing.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"36 1","pages":"458-463"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90063735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/COMPTELIX.2017.8003980
Jaiverdhan, M. Sharma, Deepshikha Lodhi, R. P. Yadav
A dual band double slot loaded microstrip antenna with a diagonal coaxial feeding is proposed. Rectangular patch is used as radiator over which two narrow slots are created. These slot and feed position make antenna both frequency and polarization reconfigurable. The bandwidth of this slotted antenna is 550 MHz and 180 MHz at 4.0 and 4.9 GHz respectively. This bandwidth is sufficient for many applications like satellite and radar communication. The antenna is analyzed and simulated using HFSS V.17.0. The 10∶1 gain bandwidth of the simulated antenna with respect to center frequency is 12.5% at 4.9 GHz and 4.7% at 4 GHz. The proposed work provides 7.8dBi gain at frequency 4.9 GHz and 7.1dBi at 4 GHz. The proposed antenna provides circular polarization (both LHCP and RHCP). This antenna having an overall dimension of 60 × 60 × 3.8 mm3 and the dimension of slots created over patch is 18 × 1 mm which is very compact compared to the conventional antenna.
{"title":"Analysis of dual band double slot loaded microstrip patch antenna","authors":"Jaiverdhan, M. Sharma, Deepshikha Lodhi, R. P. Yadav","doi":"10.1109/COMPTELIX.2017.8003980","DOIUrl":"https://doi.org/10.1109/COMPTELIX.2017.8003980","url":null,"abstract":"A dual band double slot loaded microstrip antenna with a diagonal coaxial feeding is proposed. Rectangular patch is used as radiator over which two narrow slots are created. These slot and feed position make antenna both frequency and polarization reconfigurable. The bandwidth of this slotted antenna is 550 MHz and 180 MHz at 4.0 and 4.9 GHz respectively. This bandwidth is sufficient for many applications like satellite and radar communication. The antenna is analyzed and simulated using HFSS V.17.0. The 10∶1 gain bandwidth of the simulated antenna with respect to center frequency is 12.5% at 4.9 GHz and 4.7% at 4 GHz. The proposed work provides 7.8dBi gain at frequency 4.9 GHz and 7.1dBi at 4 GHz. The proposed antenna provides circular polarization (both LHCP and RHCP). This antenna having an overall dimension of 60 × 60 × 3.8 mm3 and the dimension of slots created over patch is 18 × 1 mm which is very compact compared to the conventional antenna.","PeriodicalId":6917,"journal":{"name":"2017 International Conference on Computer, Communications and Electronics (Comptelix)","volume":"30 1","pages":"286-288"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87393407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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