Pub Date : 2011-03-24DOI: 10.1109/ICCSP.2011.5739398
D. Sen, S. Pal
A new method of measuring image contrast based on local band-limited approach and center-surround retinal receptive field model is devised in this paper. Various evidences from physiological studies corresponding to contrast perception is considered. This method works at multiple scales (frequency bands) and combines the contrast measures obtained at different scales using Lp-norm. Demonstrations of contrast measurement in grayscale and color images using the new method are considered to show its suitability.
{"title":"Retinal visual system based contrast measurement in images","authors":"D. Sen, S. Pal","doi":"10.1109/ICCSP.2011.5739398","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739398","url":null,"abstract":"A new method of measuring image contrast based on local band-limited approach and center-surround retinal receptive field model is devised in this paper. Various evidences from physiological studies corresponding to contrast perception is considered. This method works at multiple scales (frequency bands) and combines the contrast measures obtained at different scales using Lp-norm. Demonstrations of contrast measurement in grayscale and color images using the new method are considered to show its suitability.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115475765","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739350
S. Poonkuntran, R. Rajesh
This paper proposes a messy model based watermarking scheme for the authentication of medical images. The digital fundus images are one particular class of medical images which has been chosen for simulation and analysis of the proposed scheme in this paper. These images are given in TIF format in RGB color space. The proposed scheme dynamically generates the watermark using messy models. And, it is embedded inside the image by expanding intra plane difference between any two color planes of images. It is known as intra-plane difference expanding. The proposed scheme is very sensitive to the jittering, geometrical and various filtering attacks; thereby it modifies around 40% of the watermark for jittering, geometrical attacks and around 45% of the watermark for filtering attacks at an average.
{"title":"A messy watermarking for medical image authentication","authors":"S. Poonkuntran, R. Rajesh","doi":"10.1109/ICCSP.2011.5739350","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739350","url":null,"abstract":"This paper proposes a messy model based watermarking scheme for the authentication of medical images. The digital fundus images are one particular class of medical images which has been chosen for simulation and analysis of the proposed scheme in this paper. These images are given in TIF format in RGB color space. The proposed scheme dynamically generates the watermark using messy models. And, it is embedded inside the image by expanding intra plane difference between any two color planes of images. It is known as intra-plane difference expanding. The proposed scheme is very sensitive to the jittering, geometrical and various filtering attacks; thereby it modifies around 40% of the watermark for jittering, geometrical attacks and around 45% of the watermark for filtering attacks at an average.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116233223","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739385
N. Pandey, R. Bazaz, R. Manocha
This paper presents a comparison between various RLC-ladder filter simulation techniques using a recently proposed active building block, that is the multiple output current controlled current conveyer transconductance amplifier (MO-CCCCTA). The well known leap frog technique of RLC ladder filter simulation has been used to design the proposed circuits. The active block is used because of following advantages i) it is a current controlled device so parasitic resistance at current input port can be controlled by an input bias current. (ii) the circuit operation is temperature insensitive (iii) it has high frequency potential (iv) it performs tuning over a wide current range. These simulated filters retain minimum requirement of passive and active elements and provide the filter corner frequency tunability. PSPICE simulation of various ladders has been done and included to ensure the validity of the approach.
{"title":"Active RLC ladder filter simulation using newly proposed CCCCTA block","authors":"N. Pandey, R. Bazaz, R. Manocha","doi":"10.1109/ICCSP.2011.5739385","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739385","url":null,"abstract":"This paper presents a comparison between various RLC-ladder filter simulation techniques using a recently proposed active building block, that is the multiple output current controlled current conveyer transconductance amplifier (MO-CCCCTA). The well known leap frog technique of RLC ladder filter simulation has been used to design the proposed circuits. The active block is used because of following advantages i) it is a current controlled device so parasitic resistance at current input port can be controlled by an input bias current. (ii) the circuit operation is temperature insensitive (iii) it has high frequency potential (iv) it performs tuning over a wide current range. These simulated filters retain minimum requirement of passive and active elements and provide the filter corner frequency tunability. PSPICE simulation of various ladders has been done and included to ensure the validity of the approach.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121145806","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739396
Shrikant Sharma, P. Jena, R. Kuloor
GROUND-penetrating radar (GPR) is a mature remote sensing technique employed by engineers and scientists to obtain information from subsurface structures. These structures range from manmade objects, such as buried utilities, pavements, and unexploded ordnance, to geological formations. GPR data collection may be viewed as a mapping from the object space (x,y,z), characterized by the object's spatial location and reflectivity, to the image space. The image space may be viewed in the space-time domain (x,y,t), where the recorded scattered signals are displayed as a function of lateral position and time, or in the Omega-K domain (kx,ky,f), where the two image sets are related by spatial-temporal Fourier transforms (FTs). Additionally, data may be recorded in the space-frequency domain (x,y,f ), as would be the case with a frequency-domain GPR. Fourier transforms allow easy conversions between the three image domains.
{"title":"Mathematical analysis of interpolation step of Omega - K Algorithm for GPR and its implementation","authors":"Shrikant Sharma, P. Jena, R. Kuloor","doi":"10.1109/ICCSP.2011.5739396","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739396","url":null,"abstract":"GROUND-penetrating radar (GPR) is a mature remote sensing technique employed by engineers and scientists to obtain information from subsurface structures. These structures range from manmade objects, such as buried utilities, pavements, and unexploded ordnance, to geological formations. GPR data collection may be viewed as a mapping from the object space (x,y,z), characterized by the object's spatial location and reflectivity, to the image space. The image space may be viewed in the space-time domain (x,y,t), where the recorded scattered signals are displayed as a function of lateral position and time, or in the Omega-K domain (kx,ky,f), where the two image sets are related by spatial-temporal Fourier transforms (FTs). Additionally, data may be recorded in the space-frequency domain (x,y,f ), as would be the case with a frequency-domain GPR. Fourier transforms allow easy conversions between the three image domains.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123342717","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739312
Y. Prabhakar, P. Subirats, Christèle Lecomte
The safety of powered two wheelers (PTWs) is an important concern for public authorities and road administrators. In France, even though road safety has improved since 2002, the number of accidents involving PTWs is still high. If we look at the figures, PTWs represent only 1% of the traffic but 28% of the deaths on the road. This shows that the risk of getting killed on a motorbike is 24 times greater than in a car. Over the past few years, there has been a significant rise in the number of PTWs, but there is still a lack of information on this class of vehicle. It is, therefore, difficult to study the interactions of PTWs with other road users and with the road infrastructure. The state-of-the-art study conducted in 2009 showed that there is no technical solution as such that can be adapted to measure this category of vehicle in traffic (unlike cars and trucks), so research in this domain has not greatly advanced, which is an issue of concern. In this paper we propose using a rangefinder to detect PTWs in traffic, a new method that shows promising results.
{"title":"A new method for the detection of motorbikes by laser ragefinder","authors":"Y. Prabhakar, P. Subirats, Christèle Lecomte","doi":"10.1109/ICCSP.2011.5739312","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739312","url":null,"abstract":"The safety of powered two wheelers (PTWs) is an important concern for public authorities and road administrators. In France, even though road safety has improved since 2002, the number of accidents involving PTWs is still high. If we look at the figures, PTWs represent only 1% of the traffic but 28% of the deaths on the road. This shows that the risk of getting killed on a motorbike is 24 times greater than in a car. Over the past few years, there has been a significant rise in the number of PTWs, but there is still a lack of information on this class of vehicle. It is, therefore, difficult to study the interactions of PTWs with other road users and with the road infrastructure. The state-of-the-art study conducted in 2009 showed that there is no technical solution as such that can be adapted to measure this category of vehicle in traffic (unlike cars and trucks), so research in this domain has not greatly advanced, which is an issue of concern. In this paper we propose using a rangefinder to detect PTWs in traffic, a new method that shows promising results.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128352256","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739356
Sudhanshu Baghel, R. Shaik
This paper proposes a design and implementation of high throughput adaptive digital filter using Fast Block Least Mean Squares (FBLMS) adaptive algorithm. The filter structure is based on Distributed Arithmetic (DA), which is able to calculate the inner product by shifting, and accumulating of partial products and storing in look-up table, also the desired adaptive digital filter will be multiplierless. Thus a DA based implementation of adaptive filter is highly computational and area efficient. Furthermore, the fundamental building blocks in the DA architecture map well to the architecture of todays Field Programmable Gate Arrays (FPGA). FPGA implementation results conforms that the proposed DA based adaptive filter can implement with significantly smaller area usage, (about 45%) less than that of the existing FBLMS algorithm based adaptive filter.
{"title":"FPGA implementation of Fast Block LMS adaptive filter using Distributed Arithmetic for high throughput","authors":"Sudhanshu Baghel, R. Shaik","doi":"10.1109/ICCSP.2011.5739356","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739356","url":null,"abstract":"This paper proposes a design and implementation of high throughput adaptive digital filter using Fast Block Least Mean Squares (FBLMS) adaptive algorithm. The filter structure is based on Distributed Arithmetic (DA), which is able to calculate the inner product by shifting, and accumulating of partial products and storing in look-up table, also the desired adaptive digital filter will be multiplierless. Thus a DA based implementation of adaptive filter is highly computational and area efficient. Furthermore, the fundamental building blocks in the DA architecture map well to the architecture of todays Field Programmable Gate Arrays (FPGA). FPGA implementation results conforms that the proposed DA based adaptive filter can implement with significantly smaller area usage, (about 45%) less than that of the existing FBLMS algorithm based adaptive filter.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129804118","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739329
F. Mianji, Ye Zhang, A. Babakhani
Hughes phenomenon is a serious problem in supervised classification of hyperspectral images in particular for small land-cover patches. A solution for this problem through integrating the capabilities of a nonlinear discriminating analysis with relevance vector machine (RVM) is proposed in this paper. It first transforms the hyperdimensional data to a new space with a better class separability. Then, a multiclass RVM classifier processes the transformed data for precise labeling of the classes. The results show that the proposed approach outperforms both RVM as well as support vector machine (SVM), when they are applied to the original hyperdimensional data space. Indeed, it is an advantage for key information detection in the classification context.
{"title":"Nonlinear discriminant analysis and RVM for efficient classification of small land-cover patches","authors":"F. Mianji, Ye Zhang, A. Babakhani","doi":"10.1109/ICCSP.2011.5739329","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739329","url":null,"abstract":"Hughes phenomenon is a serious problem in supervised classification of hyperspectral images in particular for small land-cover patches. A solution for this problem through integrating the capabilities of a nonlinear discriminating analysis with relevance vector machine (RVM) is proposed in this paper. It first transforms the hyperdimensional data to a new space with a better class separability. Then, a multiclass RVM classifier processes the transformed data for precise labeling of the classes. The results show that the proposed approach outperforms both RVM as well as support vector machine (SVM), when they are applied to the original hyperdimensional data space. Indeed, it is an advantage for key information detection in the classification context.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130497104","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739285
A. K. Roy, S. Koteswara Rao
This paper emphasizes nearest neighbourhood approach for data association, which is carried out after target motion analysis (TMA) solution stabilizes. Parameterized Modified Gain Extended Kalman Filter (PMGEKF) has been used to carry out TMA. Having done, association, fusion with state vectors is carried out.
{"title":"Multi-track association and fusion","authors":"A. K. Roy, S. Koteswara Rao","doi":"10.1109/ICCSP.2011.5739285","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739285","url":null,"abstract":"This paper emphasizes nearest neighbourhood approach for data association, which is carried out after target motion analysis (TMA) solution stabilizes. Parameterized Modified Gain Extended Kalman Filter (PMGEKF) has been used to carry out TMA. Having done, association, fusion with state vectors is carried out.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128124709","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739345
G. N. Iyer, Y. Lim
We propose a cross-layer based multi-channel Medium Access Control (MAC) protocol to maximize the utilization of the leftover spectrum of primary user channels in cognitive radio networks. This protocol integrates the spectrum sensing at Physical layer and the packet scheduling at the MAC layer for mobile ad-hoc networks. With a TDMA-based control channel, we have a scheme to handle collision. Moreover, our scheme is suitable for heterogeneous network with different device capabilities. We formulate the channel allocation problem as a constrained optimization problem and propose strategies to handle channel allocation based on graph theoretic principles, specifically using Weighted Bipartite Graph Matching technique. We name our proposed modeling as Weighted Bipartite Multi-Vertex Matching (WBMM) and describes three different schemes based on this model. We conduct extensive simulation studies to analyze and compare the performance of the proposed strategies.
{"title":"Efficient multi-channel MAC protocol and channel allocation schemes for TDMA based cognitive radio networks","authors":"G. N. Iyer, Y. Lim","doi":"10.1109/ICCSP.2011.5739345","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739345","url":null,"abstract":"We propose a cross-layer based multi-channel Medium Access Control (MAC) protocol to maximize the utilization of the leftover spectrum of primary user channels in cognitive radio networks. This protocol integrates the spectrum sensing at Physical layer and the packet scheduling at the MAC layer for mobile ad-hoc networks. With a TDMA-based control channel, we have a scheme to handle collision. Moreover, our scheme is suitable for heterogeneous network with different device capabilities. We formulate the channel allocation problem as a constrained optimization problem and propose strategies to handle channel allocation based on graph theoretic principles, specifically using Weighted Bipartite Graph Matching technique. We name our proposed modeling as Weighted Bipartite Multi-Vertex Matching (WBMM) and describes three different schemes based on this model. We conduct extensive simulation studies to analyze and compare the performance of the proposed strategies.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124217706","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 : 2011-03-24DOI: 10.1109/ICCSP.2011.5739378
Binoy Pinto, P. R. Anurenjan
Video stabilization is one of the most important enhancement techniques used to remove undesired motion in a video. Combination of global camera motion estimation along with motion separation determines the undesired motion, which is to be compensated to produce a stable video sequence. In this paper a novel method for robust video stabilization is proposed which uses Speeded Up Robust Features(SURF) as stable feature points to be tracked between frames for global motion estimation. Different measures are taken to select the most appropriate feature point trajectories. A discrete kalman filter is used to smoothen so estimated motion vectors and the resultant stabilized video is obtained by compensating the unstable motion.
{"title":"Video stabilization using Speeded Up Robust Features","authors":"Binoy Pinto, P. R. Anurenjan","doi":"10.1109/ICCSP.2011.5739378","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739378","url":null,"abstract":"Video stabilization is one of the most important enhancement techniques used to remove undesired motion in a video. Combination of global camera motion estimation along with motion separation determines the undesired motion, which is to be compensated to produce a stable video sequence. In this paper a novel method for robust video stabilization is proposed which uses Speeded Up Robust Features(SURF) as stable feature points to be tracked between frames for global motion estimation. Different measures are taken to select the most appropriate feature point trajectories. A discrete kalman filter is used to smoothen so estimated motion vectors and the resultant stabilized video is obtained by compensating the unstable motion.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128333491","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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