Pub Date : 2014-06-24DOI: 10.1109/NAECON.2014.7045795
Zishuo Ding, Shuo Qian, Yulin Li, Zhaohui Li
Multimedia information processing is a new technology developing rapidly recent years, among which the Image Matching Technology has wide range of applications in various fields, such as face recognition and building recognition, image database retrieval, etc. This paper focus on the accuracy of image matching using SIFT (Scale Invariant Feature Transform) algorithm to extract feature points from images. And then the feature points are used to find out the matching points between two images by calculating the correlation degree based on the Analysis of Grey Correlation Degree. Compared with the original algorithm, in the case that the matching time is almost the same, the algorithm in this paper has higher matching accuracy and robustness, proved by experiments, can adapt to the requirements of image recognition in various conditions and can eliminate the influence of stretching, rotation and illumination change.
{"title":"An image matching method based on the analysis of grey correlation degree and feature points","authors":"Zishuo Ding, Shuo Qian, Yulin Li, Zhaohui Li","doi":"10.1109/NAECON.2014.7045795","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045795","url":null,"abstract":"Multimedia information processing is a new technology developing rapidly recent years, among which the Image Matching Technology has wide range of applications in various fields, such as face recognition and building recognition, image database retrieval, etc. This paper focus on the accuracy of image matching using SIFT (Scale Invariant Feature Transform) algorithm to extract feature points from images. And then the feature points are used to find out the matching points between two images by calculating the correlation degree based on the Analysis of Grey Correlation Degree. Compared with the original algorithm, in the case that the matching time is almost the same, the algorithm in this paper has higher matching accuracy and robustness, proved by experiments, can adapt to the requirements of image recognition in various conditions and can eliminate the influence of stretching, rotation and illumination change.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130638214","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045763
K. Pan, E. Shin, Kelvin Freeman, Weisong Wang, Dustin Brown, G. Subramanyam
Vanadium dioxide (VO2) thin films have unique insulator to metal transition above the critical temperature of 72 °C. In this research, VO2 thin films were deposited on a sapphire substrate for thermally controllable RF/microwave switching devices with integrated heating coil. The VO2 thin film based devices showed insulator performance at room temperature and metallic state (low resistive phase) at 80 °C. Switching devices designed using a VO2 series varistor showed good isolation (<; -30 dB) and low insertion loss (> -5 dB) up to 20 GHz.
{"title":"Vanadium dioxide thin film series single-pole single throw switch","authors":"K. Pan, E. Shin, Kelvin Freeman, Weisong Wang, Dustin Brown, G. Subramanyam","doi":"10.1109/NAECON.2014.7045763","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045763","url":null,"abstract":"Vanadium dioxide (VO2) thin films have unique insulator to metal transition above the critical temperature of 72 °C. In this research, VO2 thin films were deposited on a sapphire substrate for thermally controllable RF/microwave switching devices with integrated heating coil. The VO2 thin film based devices showed insulator performance at room temperature and metallic state (low resistive phase) at 80 °C. Switching devices designed using a VO2 series varistor showed good isolation (<; -30 dB) and low insertion loss (> -5 dB) up to 20 GHz.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132022369","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045768
Christopher I. Allen, D. Langley, J. Lyke
This paper presents an analysis of an inexact N-bit ripple carry adder architecture. Results show that a 30 percent power reduction is achieved for several approximate adders while maintaining a root-mean square error of 16 percent.
{"title":"Inexact computing with approximate adder application","authors":"Christopher I. Allen, D. Langley, J. Lyke","doi":"10.1109/NAECON.2014.7045768","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045768","url":null,"abstract":"This paper presents an analysis of an inexact N-bit ripple carry adder architecture. Results show that a 30 percent power reduction is achieved for several approximate adders while maintaining a root-mean square error of 16 percent.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128127345","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045791
Erik Blasch, J. Duník, O. Straka, M. Simandl
Sigma-Point Filtering (SPF) has become popular to increase the accuracy in estimation of tracking parameters such as the mean and variance. A recent development in SPF is the stochastic integration filter (SIF) which has shown to increase estimation over the Extended Kalman Filter (EKF) and the Unscented Kalman filter (UKF); however, we want to explore the notion of the SIF versus the UKF for maneuvering targets. In this paper, we compare the SIF method with that of the KF, EKF, and UKF, using the Average Normalized Estimation Error Square (ANEES) for non-linear, non-Gaussian tracking. When the nonlinear turn-rate model is similar to the linear constant velocity model, all methods are the same. When the turn-rate model differs from the constant-velocity model, our results show that the UKF with a large number of sigma-points performs better than the SIF.
{"title":"Comparison of stochastic integration filter with the Unscented Kalman filter for maneuvering targets","authors":"Erik Blasch, J. Duník, O. Straka, M. Simandl","doi":"10.1109/NAECON.2014.7045791","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045791","url":null,"abstract":"Sigma-Point Filtering (SPF) has become popular to increase the accuracy in estimation of tracking parameters such as the mean and variance. A recent development in SPF is the stochastic integration filter (SIF) which has shown to increase estimation over the Extended Kalman Filter (EKF) and the Unscented Kalman filter (UKF); however, we want to explore the notion of the SIF versus the UKF for maneuvering targets. In this paper, we compare the SIF method with that of the KF, EKF, and UKF, using the Average Normalized Estimation Error Square (ANEES) for non-linear, non-Gaussian tracking. When the nonlinear turn-rate model is similar to the linear constant velocity model, all methods are the same. When the turn-rate model differs from the constant-velocity model, our results show that the UKF with a large number of sigma-points performs better than the SIF.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115751245","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045801
Ryan Moore, Soundararajan Ezekiel, Erik Blasch
Fast Fourier Transforms (FFTs) and Discrete Wavelet Transformations (DWTs) have been routinely used as methods of denoising signals. DWT limitations include the inability to detect contours, curves and directional information of multi-dimensional signals. In the past decade, two new approaches have surfaced: curvelets, developed by Candès; and contourlets, developed by Do et al. The typical applications of contourlets and curvelets include two-dimensional image data denoising. We explore the use of curvelets and contourlets to the one-dimensional (1D) denoising problem. Working with seismic data, we introduce various types of data noise and the wavelet, curvelet, and contourlet transforms are applied to each signal. We tested multiple decomposition levels and different thresholding values. The benchmark for determining the effectiveness of each transform is the peak signal-to-noise ratio (PSNR) between the original signal and the denoised signal. The proposed denoising methods demonstrate contourlets and curvelets as a viable alternative to the DWT and FFT during signal processing. The initial results indicate that the contourlet and curvelet methods yield a higher PSNR and lower error than the DWT and FFT for 1D data.
{"title":"Denoising one-dimensional signals with curvelets and contourlets","authors":"Ryan Moore, Soundararajan Ezekiel, Erik Blasch","doi":"10.1109/NAECON.2014.7045801","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045801","url":null,"abstract":"Fast Fourier Transforms (FFTs) and Discrete Wavelet Transformations (DWTs) have been routinely used as methods of denoising signals. DWT limitations include the inability to detect contours, curves and directional information of multi-dimensional signals. In the past decade, two new approaches have surfaced: curvelets, developed by Candès; and contourlets, developed by Do et al. The typical applications of contourlets and curvelets include two-dimensional image data denoising. We explore the use of curvelets and contourlets to the one-dimensional (1D) denoising problem. Working with seismic data, we introduce various types of data noise and the wavelet, curvelet, and contourlet transforms are applied to each signal. We tested multiple decomposition levels and different thresholding values. The benchmark for determining the effectiveness of each transform is the peak signal-to-noise ratio (PSNR) between the original signal and the denoised signal. The proposed denoising methods demonstrate contourlets and curvelets as a viable alternative to the DWT and FFT during signal processing. The initial results indicate that the contourlet and curvelet methods yield a higher PSNR and lower error than the DWT and FFT for 1D data.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"38 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120999655","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045815
Siyang Cao, Yuan F. Zheng, R. Ewing
A new wavelet based Gaussian waveform is proposed. The proposed waveform takes advantage of both the Gaussian waveform and the wavelet-based waveform for improving the performance in range detection. The new waveform can completely remove the near-sidelobes and push the far-sidelobes out of the detecting boundary. As a result, it is particularly suitable for use by the spotlight synthetic aperture radar (SAR).
{"title":"Wavelet-based gaussian waveform for spotlight synthetic aperture radar","authors":"Siyang Cao, Yuan F. Zheng, R. Ewing","doi":"10.1109/NAECON.2014.7045815","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045815","url":null,"abstract":"A new wavelet based Gaussian waveform is proposed. The proposed waveform takes advantage of both the Gaussian waveform and the wavelet-based waveform for improving the performance in range detection. The new waveform can completely remove the near-sidelobes and push the far-sidelobes out of the detecting boundary. As a result, it is particularly suitable for use by the spotlight synthetic aperture radar (SAR).","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124080281","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045771
C. Pfeiffer, A. Grbic
An optical metasurface providing isotropic beam refraction is reported. The metasurface consists of cascaded metallic layers which allows for complete phase control while maintaining high transmission of the co-polarized field. The efficiency of the metasurface was measured to be 3 times larger than state of the art metasurfaces consisting of a single metallic layer. Future work will consider anisotropic metasurfaces that allow both wavefront and polarization control.
{"title":"Metasurfaces for phase and polarization control","authors":"C. Pfeiffer, A. Grbic","doi":"10.1109/NAECON.2014.7045771","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045771","url":null,"abstract":"An optical metasurface providing isotropic beam refraction is reported. The metasurface consists of cascaded metallic layers which allows for complete phase control while maintaining high transmission of the co-polarized field. The efficiency of the metasurface was measured to be 3 times larger than state of the art metasurfaces consisting of a single metallic layer. Future work will consider anisotropic metasurfaces that allow both wavefront and polarization control.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134177838","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045830
Randall D. Deppensmith, Samuel J. Stone
Device discrimination using RF-DNA utilizes the uniqueness resulting from integrated circuit (IC) manufacturing process variation. As an IC ages toward wear-out failure, internal physical alterations may impart additional changes on the order of initial process variations. This paper proposes exploration of: 1) the impact of aging on RF-DNA discrimination reliability, and 2) a means to monitor IC aging using RF-DNA.
{"title":"Integrated circuit (IC) aging effects on radio-frequency distinct native attributes (RF-DNA)","authors":"Randall D. Deppensmith, Samuel J. Stone","doi":"10.1109/NAECON.2014.7045830","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045830","url":null,"abstract":"Device discrimination using RF-DNA utilizes the uniqueness resulting from integrated circuit (IC) manufacturing process variation. As an IC ages toward wear-out failure, internal physical alterations may impart additional changes on the order of initial process variations. This paper proposes exploration of: 1) the impact of aging on RF-DNA discrimination reliability, and 2) a means to monitor IC aging using RF-DNA.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123459505","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045774
C. Devlin, J. Vella, D. Walker, J. Lombardi, N. Limberopoulos, J. Derov
Gradient Index Media have multiple applications for controlling the wave propagation and harvesting its received energy or processing its embedded data. A nanofabrication process was developed to produce a Luneburg lens on silicon, to operate in the optical regime, with feature sizes smaller than 100nm. The focused energy of the Luneburg lens is compared with lenses of non-spatially-varying index as well as a linear spatial variation, and its enhanced focusing is clearly demonstrated. In addition, a mechanism of thermal tunability of such devices is proposed and is supported by our results.
{"title":"Nanoscale gradient index media fabrication for extreme control and tunability of optical wave propagation","authors":"C. Devlin, J. Vella, D. Walker, J. Lombardi, N. Limberopoulos, J. Derov","doi":"10.1109/NAECON.2014.7045774","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045774","url":null,"abstract":"Gradient Index Media have multiple applications for controlling the wave propagation and harvesting its received energy or processing its embedded data. A nanofabrication process was developed to produce a Luneburg lens on silicon, to operate in the optical regime, with feature sizes smaller than 100nm. The focused energy of the Luneburg lens is compared with lenses of non-spatially-varying index as well as a linear spatial variation, and its enhanced focusing is clearly demonstrated. In addition, a mechanism of thermal tunability of such devices is proposed and is supported by our results.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130093892","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 : 2014-06-24DOI: 10.1109/NAECON.2014.7045802
R. Ilin
This work utilizes high resolution images in order to improve the classification accuracy on low resolution images. The approach is based on the machine learning paradigm called LUPI - “Learning Using Privileged Information”. In this contribution, the LUPI paradigm is demonstrated on images from the Caltech 101 dataset.
{"title":"Machine learning approach to fusion of high and low resolution imagery for improved target classification","authors":"R. Ilin","doi":"10.1109/NAECON.2014.7045802","DOIUrl":"https://doi.org/10.1109/NAECON.2014.7045802","url":null,"abstract":"This work utilizes high resolution images in order to improve the classification accuracy on low resolution images. The approach is based on the machine learning paradigm called LUPI - “Learning Using Privileged Information”. In this contribution, the LUPI paradigm is demonstrated on images from the Caltech 101 dataset.","PeriodicalId":318539,"journal":{"name":"NAECON 2014 - IEEE National Aerospace and Electronics Conference","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130951699","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：