Pub Date : 2019-01-01DOI: 10.1109/IBCAST.2019.8667242
Usman Zaheer, Muhammad Ajmal
Damping estimation plays a very critical role in flutter flight testing of an aircraft. Highly damped structures are more stable than lightly damped structures. Different techniques are used in aerospace community for the computation of damping. This paper describes and compares two damping estimation techniques which are Random Decrement & Half Power method. Half power method was further evaluated with output only and transfer function based computation. Random decrement method (RDD) was used for the time domain data analysis whereas half power method was used for frequency domain analysis. Each technique has its own merits and demerits. These techniques have been analyzed and discussed based on the actual flight test data. Both techniques provided comparable results for the data at similar test conditions. However, RDD technique gives better damping estimation for closely spaced modes and poor signal to noise ratios.
{"title":"Comparison of Damping Estimation Techniques for Flight Tests","authors":"Usman Zaheer, Muhammad Ajmal","doi":"10.1109/IBCAST.2019.8667242","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667242","url":null,"abstract":"Damping estimation plays a very critical role in flutter flight testing of an aircraft. Highly damped structures are more stable than lightly damped structures. Different techniques are used in aerospace community for the computation of damping. This paper describes and compares two damping estimation techniques which are Random Decrement & Half Power method. Half power method was further evaluated with output only and transfer function based computation. Random decrement method (RDD) was used for the time domain data analysis whereas half power method was used for frequency domain analysis. Each technique has its own merits and demerits. These techniques have been analyzed and discussed based on the actual flight test data. Both techniques provided comparable results for the data at similar test conditions. However, RDD technique gives better damping estimation for closely spaced modes and poor signal to noise ratios.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131046721","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667141
Kamran Alam, S. Saher, Saddam Ali, Ahmad Mujtaba, Affaq Qamar
In this research porous silica nanoparticles are deposited on solar PV protective glass to achieve super hydrophilicity. The coated glass has antifogging, antireflective and highly transparent surface, which is attained by using SiH4 gas as a precursor material. Desired thickness of coating over the substrate surface is accomplished by tuning the RF power and maneuvering the flow rate of silane, air and He mixture in the coating chamber. Surface topology of coated film is studied by atomic force microscope and indicates superhydrophilic and outstanding antifogging properties due to nanoporosity and high surface roughness. Furthermore, the graded index of coated surface enhances the transmissivity from 90% to 99.2%.
{"title":"Super hydrophilic nano particulate coating for solar PV module","authors":"Kamran Alam, S. Saher, Saddam Ali, Ahmad Mujtaba, Affaq Qamar","doi":"10.1109/IBCAST.2019.8667141","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667141","url":null,"abstract":"In this research porous silica nanoparticles are deposited on solar PV protective glass to achieve super hydrophilicity. The coated glass has antifogging, antireflective and highly transparent surface, which is attained by using SiH4 gas as a precursor material. Desired thickness of coating over the substrate surface is accomplished by tuning the RF power and maneuvering the flow rate of silane, air and He mixture in the coating chamber. Surface topology of coated film is studied by atomic force microscope and indicates superhydrophilic and outstanding antifogging properties due to nanoporosity and high surface roughness. Furthermore, the graded index of coated surface enhances the transmissivity from 90% to 99.2%.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115641167","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667186
M. Zeeshan, M. Arif, Muhammad Umair, Syed Muhammad Tashfeen Javed
This paper provides a survey of systems engineering approaches for modern radar for fighter aircraft. Due to the confidential nature of this area, not much literature is published. Airborne radar systems engineering is partially performed using the approaches followed for ground based radar on which a reasonable literature is published. However, there are certain functional areas in which system engineering approach specific to airborne radar system is required. In this paper a focus is made toward the requirement of systems engineering approach for airborne radar and discusses available literature to assist the systems engineers working on airborne radars.
{"title":"Survey of Systems Engineering Approaches for Design and Development of AESA Radar for Fighter Aircraft","authors":"M. Zeeshan, M. Arif, Muhammad Umair, Syed Muhammad Tashfeen Javed","doi":"10.1109/IBCAST.2019.8667186","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667186","url":null,"abstract":"This paper provides a survey of systems engineering approaches for modern radar for fighter aircraft. Due to the confidential nature of this area, not much literature is published. Airborne radar systems engineering is partially performed using the approaches followed for ground based radar on which a reasonable literature is published. However, there are certain functional areas in which system engineering approach specific to airborne radar system is required. In this paper a focus is made toward the requirement of systems engineering approach for airborne radar and discusses available literature to assist the systems engineers working on airborne radars.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123179659","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667198
Muhammad Awais Akhter, Adeel Mumtaz, R. Nawaz
Hyperspectral image analysis techniques use reflective solar radiation acquired by hyperspectral cameras to identify target present in the scene. A target can be any material surface of interest within an acquired image. The image acquisition mode of mostly available commercial hyperspectral camera is pushbroom. A pushbroom hyperspectral camera is a line scanning image sensor which collects ground image data parallel to the flight path at a specific point angle. The one dimension of acquired hyperspectral image represents the swath width while the other represents the spectral range. In this work, detection of selected materials present in the scene is performed. The spectral signature libraries of the target material and the background materials present in the scene are known. This prior spectral signatures knowledge is utilized in image bands selection to decrease processing and storage requirements while at the same time minimizing target and background visual blending. Moreover, post processing techniques making use of the expected context and size/orientation of the target are developed for a successful detection.
{"title":"Runway Detection using Pushbroom Hyperspectral Camera","authors":"Muhammad Awais Akhter, Adeel Mumtaz, R. Nawaz","doi":"10.1109/IBCAST.2019.8667198","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667198","url":null,"abstract":"Hyperspectral image analysis techniques use reflective solar radiation acquired by hyperspectral cameras to identify target present in the scene. A target can be any material surface of interest within an acquired image. The image acquisition mode of mostly available commercial hyperspectral camera is pushbroom. A pushbroom hyperspectral camera is a line scanning image sensor which collects ground image data parallel to the flight path at a specific point angle. The one dimension of acquired hyperspectral image represents the swath width while the other represents the spectral range. In this work, detection of selected materials present in the scene is performed. The spectral signature libraries of the target material and the background materials present in the scene are known. This prior spectral signatures knowledge is utilized in image bands selection to decrease processing and storage requirements while at the same time minimizing target and background visual blending. Moreover, post processing techniques making use of the expected context and size/orientation of the target are developed for a successful detection.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127566392","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667244
Huma Rehman Baig, Ali Nasir
Space telescopic missions have been deployed for about half a century. Plenty of information about the characteristics of various asteroids and stars has been collected and analyzed through these missions. While there has been a lot of work done on the individual scheduling of space telescope missions, collaborative or coordinated scheduling of multiple space telescopes is relatively less explored. Coordinated scheduling is important to obtain scientific data in an efficient and robust manner. Therefore, this paper proposes a framework for coordinated target assignment of space telescopic missions that enables different satellites to share objectives of collection of scientific data. The proposed framework considers the cost involved in various scientific data collection activities with relevance to each individual space telescope. Satellite workload constraints and possibility of occurrence of faults have also been considered. Performance of the optimal policy calculated using the proposed model has been compared with a rule-based target assignment policy and superiority of the proposed approach has been demonstrated.
{"title":"Coordinated Target Assignment for Multi-Spacecraft Telescopic Missions","authors":"Huma Rehman Baig, Ali Nasir","doi":"10.1109/IBCAST.2019.8667244","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667244","url":null,"abstract":"Space telescopic missions have been deployed for about half a century. Plenty of information about the characteristics of various asteroids and stars has been collected and analyzed through these missions. While there has been a lot of work done on the individual scheduling of space telescope missions, collaborative or coordinated scheduling of multiple space telescopes is relatively less explored. Coordinated scheduling is important to obtain scientific data in an efficient and robust manner. Therefore, this paper proposes a framework for coordinated target assignment of space telescopic missions that enables different satellites to share objectives of collection of scientific data. The proposed framework considers the cost involved in various scientific data collection activities with relevance to each individual space telescope. Satellite workload constraints and possibility of occurrence of faults have also been considered. Performance of the optimal policy calculated using the proposed model has been compared with a rule-based target assignment policy and superiority of the proposed approach has been demonstrated.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129767384","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667112
J. Bukhari, Wonyong Yoon
In order to provide high quality multimedia services to a number of cellular users in a heterogeneous network, multicasting is a promising mechanism transmitting the content in a spectrally efficient way. To further enhance the heterogeneous spectrum utilization, Device-to-Device (D2D) communication can be enabled which offers wireless peer-to-peer services, reducing the traffic stress at the backhaul. However, the delivery of multicast content is not reliable enough to achieve effective throughput. We introduce OpenFlow based Software-defined Networking (SDN) technology in heterogeneous networks for reliable dissemination of multicast content to interested D2D users. It provides simplified and efficient multicast signaling due to well-organized centralized construction of multicast trees, multicast group membership management and central allocation of spectral resources. In this paper, we present SDN based heterogeneous LTE/WLAN network architecture that logically supports D2D enabled flexible multicast communication where direct links are established among proximate users. We simulate heterogeneous network architecture in NS3 simulator and test the provisioning of multicast video frames to real smartphones by jointly exploiting network information collection and network abstraction with the help of SDN. In order to achieve that, we connect our simulation testbed with a real video server to traverse the video packets to smartphones over the simulated LTE/WLAN network controlled by a real SDN controller. The functionality of our testbed is verified by reliably delivering video to connected smartphones through LTE and WLAN. The D2D users can fully enjoy flexible transmission of multicast video content with less multicast delay (due to neighboring users) and control overhead (due to SDN).
{"title":"Simulated view of SDN based multicasting over D2D enabled heterogeneous cellular networks","authors":"J. Bukhari, Wonyong Yoon","doi":"10.1109/IBCAST.2019.8667112","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667112","url":null,"abstract":"In order to provide high quality multimedia services to a number of cellular users in a heterogeneous network, multicasting is a promising mechanism transmitting the content in a spectrally efficient way. To further enhance the heterogeneous spectrum utilization, Device-to-Device (D2D) communication can be enabled which offers wireless peer-to-peer services, reducing the traffic stress at the backhaul. However, the delivery of multicast content is not reliable enough to achieve effective throughput. We introduce OpenFlow based Software-defined Networking (SDN) technology in heterogeneous networks for reliable dissemination of multicast content to interested D2D users. It provides simplified and efficient multicast signaling due to well-organized centralized construction of multicast trees, multicast group membership management and central allocation of spectral resources. In this paper, we present SDN based heterogeneous LTE/WLAN network architecture that logically supports D2D enabled flexible multicast communication where direct links are established among proximate users. We simulate heterogeneous network architecture in NS3 simulator and test the provisioning of multicast video frames to real smartphones by jointly exploiting network information collection and network abstraction with the help of SDN. In order to achieve that, we connect our simulation testbed with a real video server to traverse the video packets to smartphones over the simulated LTE/WLAN network controlled by a real SDN controller. The functionality of our testbed is verified by reliably delivering video to connected smartphones through LTE and WLAN. The D2D users can fully enjoy flexible transmission of multicast video content with less multicast delay (due to neighboring users) and control overhead (due to SDN).","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128041478","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667162
Syed Jawad Hussain Shah, Syed Gibran Javed, Abdul Majid, Syed Jawad Hussain Shah, S. A. Qureshi
Hyperspectral imaging (HI) is getting much more attention among researchers in different fields like agriculture, defense, medical, and geographical surveys. In this work, we have proposed a novel automated system for the classification and segmentation of landscapes using hyperspectral images. The proposed semi-supervised based approach has improved the extraction of spatial characteristics of the scene that has employed an extended multi-attribute profile (EMAP) by stacking of several attributes. The unlabeled data points located near the classifier boundaries are selected on the basis of entropy related to the corresponding class labels. In the next segmentation phase, MLR probabilities are computed against the output of classifier. Finally, maximum-a-posteriori segmentation is carried out on the multilevel logistic prior labels. The simulated results have obtained classification accuracy of 95.50% by comparing predicted labels with original ones. The segmentation accuracy, after developing regions on the output of classification, is 98.31%. A performance comparison of the proposed approach with several approaches has also been carried out.
{"title":"Novel Classification Technique for Hyperspectral Imaging using Multinomial Logistic Regression and Morphological Profiles with Composite Kernels","authors":"Syed Jawad Hussain Shah, Syed Gibran Javed, Abdul Majid, Syed Jawad Hussain Shah, S. A. Qureshi","doi":"10.1109/IBCAST.2019.8667162","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667162","url":null,"abstract":"Hyperspectral imaging (HI) is getting much more attention among researchers in different fields like agriculture, defense, medical, and geographical surveys. In this work, we have proposed a novel automated system for the classification and segmentation of landscapes using hyperspectral images. The proposed semi-supervised based approach has improved the extraction of spatial characteristics of the scene that has employed an extended multi-attribute profile (EMAP) by stacking of several attributes. The unlabeled data points located near the classifier boundaries are selected on the basis of entropy related to the corresponding class labels. In the next segmentation phase, MLR probabilities are computed against the output of classifier. Finally, maximum-a-posteriori segmentation is carried out on the multilevel logistic prior labels. The simulated results have obtained classification accuracy of 95.50% by comparing predicted labels with original ones. The segmentation accuracy, after developing regions on the output of classification, is 98.31%. A performance comparison of the proposed approach with several approaches has also been carried out.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125572224","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667232
M. Ozair, M. N. Qureshi
During flight missions, hammerhead nose cone configurations are subjected to external intense acoustic pressure fields, particularly during transonic flight regime. These intense acoustic pressure fields can excite the structures and induce noise and vibrations along the external surfaces of the configuration. These loads can also cause severe structural damage to the payload; and ultimately can destroy the whole satellite mission. Therefore, it is extremely necessary to determine unsteady pressure fluctuations and aeroacoustic loads on such configurations and consider them in the overall design load analysis to ensure that the vehicle is safe from the severity of acoustic loads. In the present work, transient CFD simulation of flow over a hammerhead nose cone configuration has been performed for a transonic Mach number of 0.83. The objectives of the present work are to compute the unsteady surface pressure fluctuations and sound pressure levels, and establish the validity and accuracy of the computational methodology. The validation has been done by comparing the numerical result with published experimental result.
{"title":"Numerical Prediction of Aeroacoustic Loads on a Hammerhead Nose Cone Configuration","authors":"M. Ozair, M. N. Qureshi","doi":"10.1109/IBCAST.2019.8667232","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667232","url":null,"abstract":"During flight missions, hammerhead nose cone configurations are subjected to external intense acoustic pressure fields, particularly during transonic flight regime. These intense acoustic pressure fields can excite the structures and induce noise and vibrations along the external surfaces of the configuration. These loads can also cause severe structural damage to the payload; and ultimately can destroy the whole satellite mission. Therefore, it is extremely necessary to determine unsteady pressure fluctuations and aeroacoustic loads on such configurations and consider them in the overall design load analysis to ensure that the vehicle is safe from the severity of acoustic loads. In the present work, transient CFD simulation of flow over a hammerhead nose cone configuration has been performed for a transonic Mach number of 0.83. The objectives of the present work are to compute the unsteady surface pressure fluctuations and sound pressure levels, and establish the validity and accuracy of the computational methodology. The validation has been done by comparing the numerical result with published experimental result.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125483532","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667135
F. Zahid, K. Ilyas, H. Qazi
This paper presents an advanced configuration for the development of monitoring & Control System for the measurement of voltage, frequency & identification of phase sequence based on AVR atmega microcontroller. Simulation of complete model is substantiated on Proteus software while designed hardware system has been endorsed with online AC mains 3phase supply. Its cardinal purpose is to supersede the conventional method, used for the detection of phase unbalance & identification of phase sequence, operate on induction principle. Notwithstanding, it infers alike zero crossing detection method, for developing an algorithm used for monitoring of 3 phase supply and control forthwith, if incorrect phase sequence is detected. With a few fundamental revamps, algorithm is simply modifiable for multi phase detection with wide range of frequencies and voltages as desired. Phase detection has its own significance in industrial applications like installation and commissioning of induction motor. This configuration allows the distant observer to control the output supply in case of any aberration. The monitoring unit is capable of highlighting the anomaly in input supply and its repercussion on output supply.
{"title":"Design & Implementation of Micro Controller based Monitoring and Control System for Current, Voltage, Frequency and Phase of three phase AC supply","authors":"F. Zahid, K. Ilyas, H. Qazi","doi":"10.1109/IBCAST.2019.8667135","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667135","url":null,"abstract":"This paper presents an advanced configuration for the development of monitoring & Control System for the measurement of voltage, frequency & identification of phase sequence based on AVR atmega microcontroller. Simulation of complete model is substantiated on Proteus software while designed hardware system has been endorsed with online AC mains 3phase supply. Its cardinal purpose is to supersede the conventional method, used for the detection of phase unbalance & identification of phase sequence, operate on induction principle. Notwithstanding, it infers alike zero crossing detection method, for developing an algorithm used for monitoring of 3 phase supply and control forthwith, if incorrect phase sequence is detected. With a few fundamental revamps, algorithm is simply modifiable for multi phase detection with wide range of frequencies and voltages as desired. Phase detection has its own significance in industrial applications like installation and commissioning of induction motor. This configuration allows the distant observer to control the output supply in case of any aberration. The monitoring unit is capable of highlighting the anomaly in input supply and its repercussion on output supply.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127663000","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 : 2019-01-01DOI: 10.1109/IBCAST.2019.8667233
Faizan Munawar, Uzair Khan, A. Shahzad, Mahmood Ul Haq, Z. Mahmood, S. Khattak, Gul Zameen Khan
Face image resolution and pose are two important factors that severely degrade the recognition ability. This paper presents a comparison of (i) the Wavelet Transform, (ii) the 2DPCA, (iii) the AdaBoost-LDA, and (iv) Fisherfaces based face recognition algorithms. Simulation results on the Multi-PIE database show that the 2DPCA face recognition algorithm can be reliably used for extremely low face image resolution of 15×15 pixels and from frontal (0°) to +35° of pose variation in near-real time. Whereas for high face image resolution of 40×40 pixels and up to 251×231 pixels, the Fisherfaces yields high accuracy across four different pose variation at the cost of much higher computation. Moreover, the recognition rate of the AdaBoost-LDA is unaffected by the image resolution from 251×231 down to 15×15 pixels. In addition, time cost comparison is also shown.
{"title":"An Empirical Study of Image Resolution and Pose on Automatic Face Recognition","authors":"Faizan Munawar, Uzair Khan, A. Shahzad, Mahmood Ul Haq, Z. Mahmood, S. Khattak, Gul Zameen Khan","doi":"10.1109/IBCAST.2019.8667233","DOIUrl":"https://doi.org/10.1109/IBCAST.2019.8667233","url":null,"abstract":"Face image resolution and pose are two important factors that severely degrade the recognition ability. This paper presents a comparison of (i) the Wavelet Transform, (ii) the 2DPCA, (iii) the AdaBoost-LDA, and (iv) Fisherfaces based face recognition algorithms. Simulation results on the Multi-PIE database show that the 2DPCA face recognition algorithm can be reliably used for extremely low face image resolution of 15×15 pixels and from frontal (0°) to +35° of pose variation in near-real time. Whereas for high face image resolution of 40×40 pixels and up to 251×231 pixels, the Fisherfaces yields high accuracy across four different pose variation at the cost of much higher computation. Moreover, the recognition rate of the AdaBoost-LDA is unaffected by the image resolution from 251×231 down to 15×15 pixels. In addition, time cost comparison is also shown.","PeriodicalId":335329,"journal":{"name":"2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127819602","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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