Pub Date : 2014-12-01DOI: 10.1109/ICECE.2014.7026902
Md. Shamim Ahsan, Man-Seop Lee, R. S. Rafi
In this paper, we report the formation of periodic array of micro/nano-scale holes/voids on the surface of and inside Al2O3-coated boro-aluminosilicate glass by means of single pulse femtosecond laser irradiation. The lowest diameter of the nano-holes printed on the Al2O3 coating reaches down to 700 nm, whereas the lowest diameter of the voids inside the glass was 1.1 μm. The fabricated micro/nano-metric holes and voids show uniformity in size and shape throughout the sample area. We also investigate the surface property of the nanovoids' evolved glass surface. We don't observe any structure on the sample surface, when the voids have been evolved inside the glass sample. In addition, we investigate the formation mechanism of the micro/nano-holes or voids in our double-layer samples. We strongly believe that, the periodic micro/nano-voids array will be useful in fabricating various photonic/optical devices, especially, in spreading light.
{"title":"Formation of micro/nano-metric holes/voids in Al2O3-coated boro-aluminosilicate glass by single pulse femtosecond laser irradiation","authors":"Md. Shamim Ahsan, Man-Seop Lee, R. S. Rafi","doi":"10.1109/ICECE.2014.7026902","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026902","url":null,"abstract":"In this paper, we report the formation of periodic array of micro/nano-scale holes/voids on the surface of and inside Al2O3-coated boro-aluminosilicate glass by means of single pulse femtosecond laser irradiation. The lowest diameter of the nano-holes printed on the Al2O3 coating reaches down to 700 nm, whereas the lowest diameter of the voids inside the glass was 1.1 μm. The fabricated micro/nano-metric holes and voids show uniformity in size and shape throughout the sample area. We also investigate the surface property of the nanovoids' evolved glass surface. We don't observe any structure on the sample surface, when the voids have been evolved inside the glass sample. In addition, we investigate the formation mechanism of the micro/nano-holes or voids in our double-layer samples. We strongly believe that, the periodic micro/nano-voids array will be useful in fabricating various photonic/optical devices, especially, in spreading light.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134245735","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026988
Md Shahadat Hasan Sohel, A. F. M. Saniul Haq, M. A. Talukder
Quantum cascade laser (QCL) is a promising candidate for comparatively less developed terahertz spectral range. GaN based QCLs provide significant advantages over traditional GaAs based QCLs due to their higher LO phonon energy. Multiple wavelength hetero active region cavity offers various advantages like multiple emission wavelength for spectroscopy, nonlinear optical phenomena, and second harmonic generation. In this paper, we propose and design a multiple wavelength hetero cavity terahertz GaN based QCL emitting at 1.7 THz, 4.3 THz, and 7.2 THz. We present detail modeling of the system and final gain spectrum. We observe high gain (~ 250 cm-1) with multiple wavelength output emission. We also observe the sensitivity of the emission on temperature and find that the gain decreases sharply with increase in the temperature.
{"title":"Design and simulation of three wavelength terahertz GaN quantum cascade laser","authors":"Md Shahadat Hasan Sohel, A. F. M. Saniul Haq, M. A. Talukder","doi":"10.1109/ICECE.2014.7026988","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026988","url":null,"abstract":"Quantum cascade laser (QCL) is a promising candidate for comparatively less developed terahertz spectral range. GaN based QCLs provide significant advantages over traditional GaAs based QCLs due to their higher LO phonon energy. Multiple wavelength hetero active region cavity offers various advantages like multiple emission wavelength for spectroscopy, nonlinear optical phenomena, and second harmonic generation. In this paper, we propose and design a multiple wavelength hetero cavity terahertz GaN based QCL emitting at 1.7 THz, 4.3 THz, and 7.2 THz. We present detail modeling of the system and final gain spectrum. We observe high gain (~ 250 cm-1) with multiple wavelength output emission. We also observe the sensitivity of the emission on temperature and find that the gain decreases sharply with increase in the temperature.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133662779","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026965
S. Saha, Mohammad Noor Bin Shaheed, M. M. H. Sajeeb, T. Hamid, S. I. Khan
The fossil fuel is decreasing rapidly and excessive use of such fuels is also hazardous for the environment. Hence, renewable energy usage is the inevitable alternative to meet up electricity demand for the developing country like Bangladesh. Although solar technology has nearly been successful in rural areas where most of the technologies are adopted based on Solar Home System(SHS), it has not yet been effective in urban areas after the imposed rule of installing solar system to get new electricity connection from power utility for various reasons. In this paper, the investigation result of the installed solar system in an area in Dhaka is presented. The overall problems regarding the connection of the system components are analyzed. Efficiency calculation for the active solar home systems is provided through cost comparison analysis by HOMER software. Some proposals are provided which can be implemented to make the concept of solar home system popular in urban ares of Bangladesh to decrease the pressure on our national grid.
{"title":"Study and analysis of existing solar PV system in urban area of Bangladesh","authors":"S. Saha, Mohammad Noor Bin Shaheed, M. M. H. Sajeeb, T. Hamid, S. I. Khan","doi":"10.1109/ICECE.2014.7026965","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026965","url":null,"abstract":"The fossil fuel is decreasing rapidly and excessive use of such fuels is also hazardous for the environment. Hence, renewable energy usage is the inevitable alternative to meet up electricity demand for the developing country like Bangladesh. Although solar technology has nearly been successful in rural areas where most of the technologies are adopted based on Solar Home System(SHS), it has not yet been effective in urban areas after the imposed rule of installing solar system to get new electricity connection from power utility for various reasons. In this paper, the investigation result of the installed solar system in an area in Dhaka is presented. The overall problems regarding the connection of the system components are analyzed. Efficiency calculation for the active solar home systems is provided through cost comparison analysis by HOMER software. Some proposals are provided which can be implemented to make the concept of solar home system popular in urban ares of Bangladesh to decrease the pressure on our national grid.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129606546","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026898
M. N. Karim, S. Hossain, S. Barua, Koushik Barua, K. R. Islam
In this paper, a low power CMOS UWB low noise amplifier (LNA) suitable for 6.2-10.6 GHz application is presented. Using simultaneous noise matching (SNIM) and self-body-bias technique, the proposed LNA is designed to operate with low supply voltage in order to reduce power consumption. The simulated results showed that at 0.62V supply voltage, the LNA consumed 3.84mW with a maximum gain of 10 dB and average noise figure of 4.55 dB over the band of interest. Minimum port reflection parameters, S11 and S22 for the proposed amplifier were found <;-10 dB whereas 1-dB compression point was found at -16.2 dBm.
{"title":"A fully integrated low power UWB LNA using self-body-bias technique for 6.2–10.6 GHz applications","authors":"M. N. Karim, S. Hossain, S. Barua, Koushik Barua, K. R. Islam","doi":"10.1109/ICECE.2014.7026898","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026898","url":null,"abstract":"In this paper, a low power CMOS UWB low noise amplifier (LNA) suitable for 6.2-10.6 GHz application is presented. Using simultaneous noise matching (SNIM) and self-body-bias technique, the proposed LNA is designed to operate with low supply voltage in order to reduce power consumption. The simulated results showed that at 0.62V supply voltage, the LNA consumed 3.84mW with a maximum gain of 10 dB and average noise figure of 4.55 dB over the band of interest. Minimum port reflection parameters, S11 and S22 for the proposed amplifier were found <;-10 dB whereas 1-dB compression point was found at -16.2 dBm.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133137654","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026834
Abdullah Al Masum, Mahady Hasan Rafy, S. M. Mahbubur Rahman
Affinity detection has been largely motivated by the increasing interest in modelling the social behavior of humans. This paper presents a supervised learning method for affinity detection which is based on an inference obtained from tracking trajectories of the human subjects captured in video sequences. In particular, the proxemic cues of group detection such as the pair-wise similarity of the positional and translational measurements of the tracked people are used in the well-known principal component analysis-based feature extraction process. The existence or non-existence of pair-wise affinities is recognized using the nearest neighbor detector applied on the proposed features and the majority voting-based fusion of decisions. Experiments conducted on surveillance video captured in diverse-type of movements of the subjects show favorable results in terms of accuracy of detecting affinities when compared with the ground truth.
{"title":"Video-based affinity group detection using trajectories of multiple subjects","authors":"Abdullah Al Masum, Mahady Hasan Rafy, S. M. Mahbubur Rahman","doi":"10.1109/ICECE.2014.7026834","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026834","url":null,"abstract":"Affinity detection has been largely motivated by the increasing interest in modelling the social behavior of humans. This paper presents a supervised learning method for affinity detection which is based on an inference obtained from tracking trajectories of the human subjects captured in video sequences. In particular, the proxemic cues of group detection such as the pair-wise similarity of the positional and translational measurements of the tracked people are used in the well-known principal component analysis-based feature extraction process. The existence or non-existence of pair-wise affinities is recognized using the nearest neighbor detector applied on the proposed features and the majority voting-based fusion of decisions. Experiments conducted on surveillance video captured in diverse-type of movements of the subjects show favorable results in terms of accuracy of detecting affinities when compared with the ground truth.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114064158","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026942
Kazi Abu Taher, S. Majumder, B. M. Azizur Rahman
To provide higher capacity optical fiber networks, a 107 Gb/s transmission system is simulated by using the combined features of polarization multiplexing (PM), quadrature phase shift keying (QPSK) and forward error correction (FEC). The lower tolerance to linear and nonlinear fiber impairments remains a major concern at a higher bit rate. To address the limitations set by the linear impairments, coherent detection of multilevel modulation formats with polarization division multiplexing appears as a promising solution by reducing the symbol rate to one-forth. Electronic dispersion compensation (EDC) and constant modulus algorithm (CMA) are used at the receiver for the linear dispersion compensation and forward error correction (FEC) respectively. Fiber spans each of 90 km are used in this simulation making the transmission length 1980 km. The bit rate of the modulating signals is kept at 26.75 Gb/s and the aggregate transmission rate of 107 Gb/s by utilizing the combined features of PM and QPSK. The power sharing of both the polarization components in the presence of polarization mode dispersion (PMD), fiber nonlinearities and random birefringence is a very important for the system design. In this paper, the PMD tolerance of the system at different transmitting powers with and without the presence of nonlinearities and birefringence are simulated and evaluated in terms of the bit error rate (BER). Transmitting power of 2.518 mW is found as the optimum value for single channel PM-QPSK systems at PMD 0.05 ps/sqrt(km).
{"title":"PMD tolerance of 107 Gb/s PM-QPSK system at optimum transmitting power","authors":"Kazi Abu Taher, S. Majumder, B. M. Azizur Rahman","doi":"10.1109/ICECE.2014.7026942","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026942","url":null,"abstract":"To provide higher capacity optical fiber networks, a 107 Gb/s transmission system is simulated by using the combined features of polarization multiplexing (PM), quadrature phase shift keying (QPSK) and forward error correction (FEC). The lower tolerance to linear and nonlinear fiber impairments remains a major concern at a higher bit rate. To address the limitations set by the linear impairments, coherent detection of multilevel modulation formats with polarization division multiplexing appears as a promising solution by reducing the symbol rate to one-forth. Electronic dispersion compensation (EDC) and constant modulus algorithm (CMA) are used at the receiver for the linear dispersion compensation and forward error correction (FEC) respectively. Fiber spans each of 90 km are used in this simulation making the transmission length 1980 km. The bit rate of the modulating signals is kept at 26.75 Gb/s and the aggregate transmission rate of 107 Gb/s by utilizing the combined features of PM and QPSK. The power sharing of both the polarization components in the presence of polarization mode dispersion (PMD), fiber nonlinearities and random birefringence is a very important for the system design. In this paper, the PMD tolerance of the system at different transmitting powers with and without the presence of nonlinearities and birefringence are simulated and evaluated in terms of the bit error rate (BER). Transmitting power of 2.518 mW is found as the optimum value for single channel PM-QPSK systems at PMD 0.05 ps/sqrt(km).","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114804941","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026888
Tasnova Nasrin Munni, Nazia Mahbub, Kaim Iftahaj Nirjhor, M. Uddin
Throughput in IEEE 802.11 based wireless local area networks (WLANs) significantly depends on the minimum contention window (CW) parameter of CSMA/CA medium access control protocol. The throughput-optimal value of the minimum CW is modeled by G. Bianchi for a single WLAN without considering co-channel interference as N√2Tc, where N is the number of contending nodes in the WLAN and Tc is the collision time in mini-slots [1]. In this paper, the throughput-optimal configuration of the minimum CWs of the CSMA/CA based WLANs is studied under co-channel interference via extensive simulations. From the simulation results, it is investigated that in a WLAN the optimal value of the minimum CW is 4% to 25% higher than the Bianchi optimal CW due to co-channel interference. However, in WLANs, the optimal throughput is very close to the throughput obtained at the Bianchi optimal CW. In WLANs, very close to the optimal throughput can be obtained by configuring each WLAN independently with the simple Bianchi model even when the co-channel interference is considered.
{"title":"On the optimal contention window size in IEEE 802.11 based WLANs under co-channel interference","authors":"Tasnova Nasrin Munni, Nazia Mahbub, Kaim Iftahaj Nirjhor, M. Uddin","doi":"10.1109/ICECE.2014.7026888","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026888","url":null,"abstract":"Throughput in IEEE 802.11 based wireless local area networks (WLANs) significantly depends on the minimum contention window (CW) parameter of CSMA/CA medium access control protocol. The throughput-optimal value of the minimum CW is modeled by G. Bianchi for a single WLAN without considering co-channel interference as N√2Tc, where N is the number of contending nodes in the WLAN and Tc is the collision time in mini-slots [1]. In this paper, the throughput-optimal configuration of the minimum CWs of the CSMA/CA based WLANs is studied under co-channel interference via extensive simulations. From the simulation results, it is investigated that in a WLAN the optimal value of the minimum CW is 4% to 25% higher than the Bianchi optimal CW due to co-channel interference. However, in WLANs, the optimal throughput is very close to the throughput obtained at the Bianchi optimal CW. In WLANs, very close to the optimal throughput can be obtained by configuring each WLAN independently with the simple Bianchi model even when the co-channel interference is considered.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128585231","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7027019
Md. Toky Foysal Talukdar, S. K. Sakib, C. Shahnaz, S. Fattah
In this paper, an efficient scheme is proposed for classification of electroencephalogram (EEG) data in to different motor imagery (MI) tasks based on empirical mode decomposition (EMD). The EEG data recorded from each channel is first decomposed into a set of intrinsic mode functions (IMFs) by using the EMD analysis. In view of extracting discriminative information from the EEG signals corresponding to different MI tasks, we propose to utilize the entropy of band-limited IMF. Instead of considering all IMFs or first few IMFs, in the proposed method only the first IMF is chosen because of its low variance. In order to reduce the dimension of the feature vector consisting of entropy values from all channels, principal component analysis is performed. For the purpose of classification, train and test datasets are formed as per leave one out cross validation scheme and then linear discriminant analysis (LDA) is carried out. Simulation is performed on publicly available MI dataset IVa of BCI Competition-III to classify the MI data in to two classes, namely right hand and right foot MI tasks. It is observed that the proposed classification scheme not only offers significant reduction in feature dimensionality but also provides satisfactory classification accuracy.
{"title":"Motor imagery EEG signal classification scheme based on entropy of intrinsic mode function","authors":"Md. Toky Foysal Talukdar, S. K. Sakib, C. Shahnaz, S. Fattah","doi":"10.1109/ICECE.2014.7027019","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7027019","url":null,"abstract":"In this paper, an efficient scheme is proposed for classification of electroencephalogram (EEG) data in to different motor imagery (MI) tasks based on empirical mode decomposition (EMD). The EEG data recorded from each channel is first decomposed into a set of intrinsic mode functions (IMFs) by using the EMD analysis. In view of extracting discriminative information from the EEG signals corresponding to different MI tasks, we propose to utilize the entropy of band-limited IMF. Instead of considering all IMFs or first few IMFs, in the proposed method only the first IMF is chosen because of its low variance. In order to reduce the dimension of the feature vector consisting of entropy values from all channels, principal component analysis is performed. For the purpose of classification, train and test datasets are formed as per leave one out cross validation scheme and then linear discriminant analysis (LDA) is carried out. Simulation is performed on publicly available MI dataset IVa of BCI Competition-III to classify the MI data in to two classes, namely right hand and right foot MI tasks. It is observed that the proposed classification scheme not only offers significant reduction in feature dimensionality but also provides satisfactory classification accuracy.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128686224","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026985
S. A. Shaon, K. Salam
This study proposes a new circuit consisting of a Vienna rectifier and a single phase two stage inverter. The inverter consists with a combination of sinusoidal pulse width modulation (SPWM) and a square wave along with grid synchronization condition. The simulation work of this circuit has been done using PSIM. The new technique revealed that the low ripple, low THD below 0.1%, low cost and simple control providing a improved power factor of above 0.94.
{"title":"Study of Vienna rectifier and a highly efficient single phase two stage inverter with low THD","authors":"S. A. Shaon, K. Salam","doi":"10.1109/ICECE.2014.7026985","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026985","url":null,"abstract":"This study proposes a new circuit consisting of a Vienna rectifier and a single phase two stage inverter. The inverter consists with a combination of sinusoidal pulse width modulation (SPWM) and a square wave along with grid synchronization condition. The simulation work of this circuit has been done using PSIM. The new technique revealed that the low ripple, low THD below 0.1%, low cost and simple control providing a improved power factor of above 0.94.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133427130","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026944
Sudip Ghosh, Arijit Biswas, S. Maity, H. Rahaman
This paper focuses on the design of an improved DFWHT (Discrete Fast Walsh Hadamard Transform) domain robust, blind digital image watermarking algorithm. Both encoding and extraction algorithm have been verified using MATLAB R2013a. Here both grayscale and binary watermarks are possible for embedding and extraction using the same designed algorithm and only grayscale cover image of maximum size(256 × 256) is used. The speciality of this algorithm attracts to the fact that there is no requirement for any other information other than the received watermarked image to extract the watermark at decoding, which makes it blind watermarking. The time complexity of the proposed algorithm is of the order of O(n2) and it is simple to implement in hardware.
{"title":"Design of an improved algorithm for blind digital image watermarking using both grayscale and binary watermark in DFWHT domain","authors":"Sudip Ghosh, Arijit Biswas, S. Maity, H. Rahaman","doi":"10.1109/ICECE.2014.7026944","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026944","url":null,"abstract":"This paper focuses on the design of an improved DFWHT (Discrete Fast Walsh Hadamard Transform) domain robust, blind digital image watermarking algorithm. Both encoding and extraction algorithm have been verified using MATLAB R2013a. Here both grayscale and binary watermarks are possible for embedding and extraction using the same designed algorithm and only grayscale cover image of maximum size(256 × 256) is used. The speciality of this algorithm attracts to the fact that there is no requirement for any other information other than the received watermarked image to extract the watermark at decoding, which makes it blind watermarking. The time complexity of the proposed algorithm is of the order of O(n2) and it is simple to implement in hardware.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125756285","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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