Pub Date : 2005-12-06DOI: 10.1109/ICICS.2005.1688997
H. Lo, Steve Mann
This paper proposes a two-stage featureless hierarchical algorithm to alleviate the problems encountered in the VideoOrbits (and other related) algorithms for estimation of the projective coordinate transformation between images. Translation, rotation and zoom parameters are estimated by phase correlation methods in the first stage, which are used as initial estimates of Orbits in the second stage. In particular, a hybrid algorithm devised to use the first stage only when the projective motion is large demonstrates the most significant improvements in efficiency and accuracy over using Orbits alone on a motion sequence with large interframe movements
{"title":"A Hierarchical Algorithm for Fast Projective Flow Estimation","authors":"H. Lo, Steve Mann","doi":"10.1109/ICICS.2005.1688997","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1688997","url":null,"abstract":"This paper proposes a two-stage featureless hierarchical algorithm to alleviate the problems encountered in the VideoOrbits (and other related) algorithms for estimation of the projective coordinate transformation between images. Translation, rotation and zoom parameters are estimated by phase correlation methods in the first stage, which are used as initial estimates of Orbits in the second stage. In particular, a hybrid algorithm devised to use the first stage only when the projective motion is large demonstrates the most significant improvements in efficiency and accuracy over using Orbits alone on a motion sequence with large interframe movements","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123339657","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689073
Zunhua Guo, Shaohong Li
In this paper we discuss the problem about the target recognition by the high resolution radar range profiles. Several feature extraction methods for computing shift invariants are simply reviewed: such as bispectrum, differential cepstrum, then the differential power spectrum (DPS) based features are introduced to this study. A multi-layered feed-forward neural network with simulated annealing resilient propagation (SARPROP) algorithm is selected as classifier. Simulations are presented to identify the range profiles of four different aircrafts. The results demonstrated that the differential power spectrum based features are effective and robust for radar target recognition
{"title":"Radar Target Recognition Using the Differential Power Spectrum","authors":"Zunhua Guo, Shaohong Li","doi":"10.1109/ICICS.2005.1689073","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689073","url":null,"abstract":"In this paper we discuss the problem about the target recognition by the high resolution radar range profiles. Several feature extraction methods for computing shift invariants are simply reviewed: such as bispectrum, differential cepstrum, then the differential power spectrum (DPS) based features are introduced to this study. A multi-layered feed-forward neural network with simulated annealing resilient propagation (SARPROP) algorithm is selected as classifier. Simulations are presented to identify the range profiles of four different aircrafts. The results demonstrated that the differential power spectrum based features are effective and robust for radar target recognition","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116353187","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1688994
N. Taing, S. Thipchaksurat, R. Varakulsiripunth, H. Ishii
All communications in a network made by mobile hosts through a shared radio link without cable or backbone, commonly called mobile ad hoc network (MANET). Since the network topology may change constantly because of mobility of nodes and the available routes may fail many times, quality-of-service (QoS) of real-time multimedia application may have difficulty in satisfying their services. In this paper, we propose a routing scheme for multimedia services, which selects the shortest path by using power level. Our proposed scheme provides not only the lower means number of hops path from source node to destination node, but also higher thoughput than the conventional scheme
{"title":"Routing Scheme for Multimedia Services in Mobile Ad Hoc Network","authors":"N. Taing, S. Thipchaksurat, R. Varakulsiripunth, H. Ishii","doi":"10.1109/ICICS.2005.1688994","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1688994","url":null,"abstract":"All communications in a network made by mobile hosts through a shared radio link without cable or backbone, commonly called mobile ad hoc network (MANET). Since the network topology may change constantly because of mobility of nodes and the available routes may fail many times, quality-of-service (QoS) of real-time multimedia application may have difficulty in satisfying their services. In this paper, we propose a routing scheme for multimedia services, which selects the shortest path by using power level. Our proposed scheme provides not only the lower means number of hops path from source node to destination node, but also higher thoughput than the conventional scheme","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127711993","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689032
F. Sinaga, T. Gunawan, E. Ambikairajah
In this paper, we propose a low-complexity scalable audio coding algorithm using an over sampled discrete wavelet transform (ODWT). The aliased free coefficients obtained are then used to accurately calculate the forward temporal masking threshold. The algorithm based on the bandwidth scalability, uses bits per sub-band and bits per frame, as outlined in this paper. Subjective tests conforming to ITU-R BS.1116 for audio signals show that the audio signals coded at 32 and 64 kbits/s using an ODWT with temporal masking offered a better audio quality compared to the critically sampled DWT
{"title":"Scalable Audio Coding using the Oversampled Discrete Wavelet Transform and Temporal Masking","authors":"F. Sinaga, T. Gunawan, E. Ambikairajah","doi":"10.1109/ICICS.2005.1689032","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689032","url":null,"abstract":"In this paper, we propose a low-complexity scalable audio coding algorithm using an over sampled discrete wavelet transform (ODWT). The aliased free coefficients obtained are then used to accurately calculate the forward temporal masking threshold. The algorithm based on the bandwidth scalability, uses bits per sub-band and bits per frame, as outlined in this paper. Subjective tests conforming to ITU-R BS.1116 for audio signals show that the audio signals coded at 32 and 64 kbits/s using an ODWT with temporal masking offered a better audio quality compared to the critically sampled DWT","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125950092","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689040
S. Santhanam., N. Prasadh, S. Bose, Y. Guan
We report here on our research on queue control strategies for multimedia networking and the effects of multi-path routing on MPEG video quality. MPEG video is encoded into an ns-2 compatible trace file format, and transmitted via the simulator. The subjective and objective performance metrics of the received transmitted video trace are analyzed. This network simulation framework then implements different queue control strategies to prioritize and transmit different MPEG frames through different routes, in order to maximize the network bandwidth utilization and to optimize the received video quality. These queue control strategies are augmented with selective packet dropping approaches and their effect on the received video quality is discussed in detail
{"title":"Queue Control Strategies for Multimedia Networking","authors":"S. Santhanam., N. Prasadh, S. Bose, Y. Guan","doi":"10.1109/ICICS.2005.1689040","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689040","url":null,"abstract":"We report here on our research on queue control strategies for multimedia networking and the effects of multi-path routing on MPEG video quality. MPEG video is encoded into an ns-2 compatible trace file format, and transmitted via the simulator. The subjective and objective performance metrics of the received transmitted video trace are analyzed. This network simulation framework then implements different queue control strategies to prioritize and transmit different MPEG frames through different routes, in order to maximize the network bandwidth utilization and to optimize the received video quality. These queue control strategies are augmented with selective packet dropping approaches and their effect on the received video quality is discussed in detail","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131942972","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689104
Z. Cai, J. Tai
Line detection is one of the important tasks in soccer video analysis. We propose a method to extract lines, which includes a series of operations: extraction of field colours, removal of unwanted frames and objects, and line patching. The experiments show that our algorithm can extract most of lines on the field in real-time soccer video. It can also be applied in other sports, such as tennis and basket ball
{"title":"Line detection in Soccer Video","authors":"Z. Cai, J. Tai","doi":"10.1109/ICICS.2005.1689104","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689104","url":null,"abstract":"Line detection is one of the important tasks in soccer video analysis. We propose a method to extract lines, which includes a series of operations: extraction of field colours, removal of unwanted frames and objects, and line patching. The experiments show that our algorithm can extract most of lines on the field in real-time soccer video. It can also be applied in other sports, such as tennis and basket ball","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134165378","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689045
Kyung-Hwa Kim, Hyung-Myung Kim
Phase noise destroys the orthogonality between sub-carriers in orthogonal frequency division multiplexing (OFDM) systems and creates intercarrier interference (ICI), which results in performance degradation. In this paper, partial response signaling (PRS) is used to reduce the effect of ICI caused by phase noise. The expression of ICI power with PRS is derived and the optimum PRS coefficients that minimize the ICI power are obtained. The simulation results show that the optimum PRS for OFDM systems obviously reduce the ICI power without decreasing the bandwidth efficiency
{"title":"A Suppression Scheme of the ICI caused by Phase Noise based on Partial Response Signaling in OFDM Systems","authors":"Kyung-Hwa Kim, Hyung-Myung Kim","doi":"10.1109/ICICS.2005.1689045","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689045","url":null,"abstract":"Phase noise destroys the orthogonality between sub-carriers in orthogonal frequency division multiplexing (OFDM) systems and creates intercarrier interference (ICI), which results in performance degradation. In this paper, partial response signaling (PRS) is used to reduce the effect of ICI caused by phase noise. The expression of ICI power with PRS is derived and the optimum PRS coefficients that minimize the ICI power are obtained. The simulation results show that the optimum PRS for OFDM systems obviously reduce the ICI power without decreasing the bandwidth efficiency","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131690223","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689048
S. Kandeepan, S. Reisenfeld
The presence of frequency offsets in the received signal for an orthogonal frequency division multiplexing (OFDM) based multicarrier system leads to inter carrier interferences (ICI). The degradation in the performance of an OFDM system is severe when there is frequency error, which is caused by the loss of orthogonality in the received carrier frequencies. Here, we look into the correction of frequency errors in the received OFDM signal, by means of a correlator based maximum likelihood (ML) frequency estimator. We analyse the system performance of the frequency corrected OFDM system and study the statistical nature of the frequency uncertainty in the receiver when the ML frequency estimator is used. The statistical distribution of the estimates made by the receiver is also determined
{"title":"Frequency Error Correction for OFDM based Multicarrier Systems and Performance Analysis","authors":"S. Kandeepan, S. Reisenfeld","doi":"10.1109/ICICS.2005.1689048","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689048","url":null,"abstract":"The presence of frequency offsets in the received signal for an orthogonal frequency division multiplexing (OFDM) based multicarrier system leads to inter carrier interferences (ICI). The degradation in the performance of an OFDM system is severe when there is frequency error, which is caused by the loss of orthogonality in the received carrier frequencies. Here, we look into the correction of frequency errors in the received OFDM signal, by means of a correlator based maximum likelihood (ML) frequency estimator. We analyse the system performance of the frequency corrected OFDM system and study the statistical nature of the frequency uncertainty in the receiver when the ML frequency estimator is used. The statistical distribution of the estimates made by the receiver is also determined","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"361 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132809435","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689264
C. Manders, Steve Mann
A noise model that is generated from pictures taken by differently illuminating the same subject matter is presented. The superposigram, a three dimensional structure based on three different illuminations of the subject matter is used to directly calculate the noise present in the images which is attributable to the noise originating in the sensor array. Though a similar method has been used to determine the dynamic range compression present in a particular camera, this paper focuses on using data in which no dynamic range compression has taken place (raw files from a Nikon D2h were used). The paper shows through a mathematical proof that the noise in the camera is well estimated by the superposigram and then shows empirically that this is true. Finally, the method is applied to four commercially available cameras, to evaluate the noise in each
{"title":"Digital Camera Sensor Noise Estimation from Different Illuminations of Identical Subject Matter","authors":"C. Manders, Steve Mann","doi":"10.1109/ICICS.2005.1689264","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689264","url":null,"abstract":"A noise model that is generated from pictures taken by differently illuminating the same subject matter is presented. The superposigram, a three dimensional structure based on three different illuminations of the subject matter is used to directly calculate the noise present in the images which is attributable to the noise originating in the sensor array. Though a similar method has been used to determine the dynamic range compression present in a particular camera, this paper focuses on using data in which no dynamic range compression has taken place (raw files from a Nikon D2h were used). The paper shows through a mathematical proof that the noise in the camera is well estimated by the superposigram and then shows empirically that this is true. Finally, the method is applied to four commercially available cameras, to evaluate the noise in each","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132088581","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 : 2005-12-06DOI: 10.1109/ICICS.2005.1689296
Manhua Liu, Xudong Jian, A. Kot
The fingerprint local ridge orientation is a kind of very important intrinsic property in fingerprint image processing and recognition. Getting a reliable orientation field is still a great challenge in poor quality fingerprint caused by scars and ridge breaks. This paper employs a median filter to attenuate impulsive-like noise in the orientation field such as the scars and ridge breaks, etc. In addition, a reliability measure of estimated orientation by the median filter is proposed and an adaptive orientation smoothing algorithm is developed to compute a reliable orientation field based on varying smoothing windows. The experimental results of some synthetic images and real poor quality fingerprints demonstrate that our proposed approach works well to attenuate noise especially the impulsive-like noise gracefully while maintaining the orientation localization of the high-curvature area
{"title":"Nonlinear Fingerprint Orientation Smoothing by Median Filter","authors":"Manhua Liu, Xudong Jian, A. Kot","doi":"10.1109/ICICS.2005.1689296","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689296","url":null,"abstract":"The fingerprint local ridge orientation is a kind of very important intrinsic property in fingerprint image processing and recognition. Getting a reliable orientation field is still a great challenge in poor quality fingerprint caused by scars and ridge breaks. This paper employs a median filter to attenuate impulsive-like noise in the orientation field such as the scars and ridge breaks, etc. In addition, a reliability measure of estimated orientation by the median filter is proposed and an adaptive orientation smoothing algorithm is developed to compute a reliable orientation field based on varying smoothing windows. The experimental results of some synthetic images and real poor quality fingerprints demonstrate that our proposed approach works well to attenuate noise especially the impulsive-like noise gracefully while maintaining the orientation localization of the high-curvature area","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133841112","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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