Pub Date : 2017-11-01DOI: 10.1109/ROPEC.2017.8261673
J. A. Sanchez-Flores, J. Y. Gonzalez-Valdes, J. Liceaga-Castro, E. Licéaga-Castro, L. Amezquita-Brooks, O. Garcia-Salazar, D. Martinez-Vazquez
The implementation of experimental benches for wind turbines is fundamental for performing tests under controlled conditions of wind power generation systems. A particular case of these systems are the generators mounted on aircraft. The design, construction, and testing of a test bench at laboratory level is presented. The aim is to develop a facility for the study, design and validation of wind turbines for small unmanned aerial vehicles. A model based on the node analysis and its identification through the time response of the actual boost-circuit of the generator is obtained. The validation of the model was carried out through static, dynamic and wind tunnel tests. The model obtained proved to be fundamental for the design of a control system which rendered high performance in the range of operation. The test bench was developed for wind tunnel tests together with the required instrumentation and data adquisition system. The data processing and the control implementation was developed in LabVIEW®. Some results showing the effectivity of the experimental bench are included.
{"title":"Experimental workbench for aircraft ram air micro-turbine generators","authors":"J. A. Sanchez-Flores, J. Y. Gonzalez-Valdes, J. Liceaga-Castro, E. Licéaga-Castro, L. Amezquita-Brooks, O. Garcia-Salazar, D. Martinez-Vazquez","doi":"10.1109/ROPEC.2017.8261673","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261673","url":null,"abstract":"The implementation of experimental benches for wind turbines is fundamental for performing tests under controlled conditions of wind power generation systems. A particular case of these systems are the generators mounted on aircraft. The design, construction, and testing of a test bench at laboratory level is presented. The aim is to develop a facility for the study, design and validation of wind turbines for small unmanned aerial vehicles. A model based on the node analysis and its identification through the time response of the actual boost-circuit of the generator is obtained. The validation of the model was carried out through static, dynamic and wind tunnel tests. The model obtained proved to be fundamental for the design of a control system which rendered high performance in the range of operation. The test bench was developed for wind tunnel tests together with the required instrumentation and data adquisition system. The data processing and the control implementation was developed in LabVIEW®. Some results showing the effectivity of the experimental bench are included.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133388058","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261633
N. M. Salgado‐Herrera, A. Medina-Rios, R. Tapia-Sánchez, O. Anaya‐Lara, J. R. Rodriguez-Rodriguez
In this paper, a Dynamic Voltage Restorer (DVR) for the sags and swells compensation from 10% to 90% and power factor correction in distribution systems is proposed. The voltage sags are not always possible to prevent due to the finite time compensation of faults that causes voltage drops to spread to sensitive loads in electrical systems. The DVR model is based on a Voltage Source Converter (VSC) scheme for voltage compensation due to the presence of sags of amplitude ranging from 0.1 pu to 0.9 pu and swells with amplitude from 1.1 pu to 1.9 pu. The results obtained through MATLAB & Simulink® are verified.
{"title":"Sags and swells compensation and power factor correction using a dynamic voltage restorer in distribution systems","authors":"N. M. Salgado‐Herrera, A. Medina-Rios, R. Tapia-Sánchez, O. Anaya‐Lara, J. R. Rodriguez-Rodriguez","doi":"10.1109/ROPEC.2017.8261633","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261633","url":null,"abstract":"In this paper, a Dynamic Voltage Restorer (DVR) for the sags and swells compensation from 10% to 90% and power factor correction in distribution systems is proposed. The voltage sags are not always possible to prevent due to the finite time compensation of faults that causes voltage drops to spread to sensitive loads in electrical systems. The DVR model is based on a Voltage Source Converter (VSC) scheme for voltage compensation due to the presence of sags of amplitude ranging from 0.1 pu to 0.9 pu and swells with amplitude from 1.1 pu to 1.9 pu. The results obtained through MATLAB & Simulink® are verified.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115326659","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261657
A. Zamora, G. Vázquez, J. M. Sosa, P. Martinez‐Rodriguez, M. Juárez
The control system block in a photovoltaic (PV) system includes the algorithm which makes possible the PV system operation under adequate conditions to extract the maximum electrical power available from the PV array, this algorithm is commonly called Maximum Power Point Tracker (MPPT). In the literature, different algorithms that researchers have developed, some more efficient, more easily to implement, more robust and faster than others, have been reported. Therefore, in this paper a comparative analysis between frequently used MPPT methods is presented. The methods considered in this analysis correspond to the classical Hill Climbing method, Perturb and Observe (P&O) method and the Incremental Conductance (INC) technique. The analysis has been oriented to measure the efficiency of each method being this parameter one of the most important to determine their performance. The simulated results permit to analyze the MPPT algorithms between them, in such a way the reader can discern the most appropriate method for his own application.
{"title":"Efficiency based comparative analysis of selected classical MPPT methods","authors":"A. Zamora, G. Vázquez, J. M. Sosa, P. Martinez‐Rodriguez, M. Juárez","doi":"10.1109/ROPEC.2017.8261657","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261657","url":null,"abstract":"The control system block in a photovoltaic (PV) system includes the algorithm which makes possible the PV system operation under adequate conditions to extract the maximum electrical power available from the PV array, this algorithm is commonly called Maximum Power Point Tracker (MPPT). In the literature, different algorithms that researchers have developed, some more efficient, more easily to implement, more robust and faster than others, have been reported. Therefore, in this paper a comparative analysis between frequently used MPPT methods is presented. The methods considered in this analysis correspond to the classical Hill Climbing method, Perturb and Observe (P&O) method and the Incremental Conductance (INC) technique. The analysis has been oriented to measure the efficiency of each method being this parameter one of the most important to determine their performance. The simulated results permit to analyze the MPPT algorithms between them, in such a way the reader can discern the most appropriate method for his own application.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114908141","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261582
Alfonso Ordoñez-García, Mario Siller, O. Begovich
In recent years, climate change, high population rates, water scarcity, contaminated farmland, eroding soils, and other factors, have raised serious concerns in the area of sustainable food production. In addition, it has been estimated that by 2050, as much as 80 percent of the earths population will reside in cities [1]. As a consequence, new forms of food production have been explored, especially in places close to or even within the consumption areas, that is, cities. In this context, cities are evolving into intelligent infrastructures in which the aim is to automate, optimize, and improve all possible aspects, including urban agriculture and precision agronomy. Despite recent research efforts, common grounds still have to be defined in terms of how to efficiently automate and provide intelligence to the urban agriculture implementations and integrate those in a transparent and scalable manner to the overall smart city solutions. For this, we believe that smart cities must be conceptualized and abstracted on a higher and different plane than the supporting information and communications technology (ICT) infrastructure. However, the essential properties that make a city smart or a system of systems must be the architectural design assets of the underlying planes. This paper presents a conceptual IoT architecture for urban farming and precision agronomy in Smart Cities based on Software Defined Networks (SDNs) and Cyber-physical systems. Three layers comprise the proposed architecture.
{"title":"IoT architecture for urban agronomy and precision applications","authors":"Alfonso Ordoñez-García, Mario Siller, O. Begovich","doi":"10.1109/ROPEC.2017.8261582","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261582","url":null,"abstract":"In recent years, climate change, high population rates, water scarcity, contaminated farmland, eroding soils, and other factors, have raised serious concerns in the area of sustainable food production. In addition, it has been estimated that by 2050, as much as 80 percent of the earths population will reside in cities [1]. As a consequence, new forms of food production have been explored, especially in places close to or even within the consumption areas, that is, cities. In this context, cities are evolving into intelligent infrastructures in which the aim is to automate, optimize, and improve all possible aspects, including urban agriculture and precision agronomy. Despite recent research efforts, common grounds still have to be defined in terms of how to efficiently automate and provide intelligence to the urban agriculture implementations and integrate those in a transparent and scalable manner to the overall smart city solutions. For this, we believe that smart cities must be conceptualized and abstracted on a higher and different plane than the supporting information and communications technology (ICT) infrastructure. However, the essential properties that make a city smart or a system of systems must be the architectural design assets of the underlying planes. This paper presents a conceptual IoT architecture for urban farming and precision agronomy in Smart Cities based on Software Defined Networks (SDNs) and Cyber-physical systems. Three layers comprise the proposed architecture.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117275295","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261684
Rosario Ramirez-Lugo, J. M. Ruiz-Hernandez, J. L. Tecpanecatl-Xihuitl, R. Aguilar-Ponce
Video compression has gain major importance with the use of video call, video transmission and streaming on wireless mobile devices. Video compression algorithms had been implemented mainly in software. However, the battery life restrictions have encouraged the hardware implementation of these algorithms. The present work is a power-aware scheme that take advantage of the temporal redundancy in the video stream as well as the status of the battery. The introduction of a simple motion detection algorithm decreases the need of calling the motion estimation and compensation process. The calls of the motion estimation and compensation process reduces operations causing a dynamic power reduction and a speed-up of the coding process. While a power-aware scheme preserve battery life by preventing a subdivision of the macroblock considering motion detection and battery capacity. The reduction on execution time for MPEG4 is in the range of 9% to 22% while achieves an average power reduction of 88%. While H.264/AVC achieves an execution time in the range of 99% to 89% with an average power reduction is 98%.
{"title":"Power-aware scheme for motion estimation","authors":"Rosario Ramirez-Lugo, J. M. Ruiz-Hernandez, J. L. Tecpanecatl-Xihuitl, R. Aguilar-Ponce","doi":"10.1109/ROPEC.2017.8261684","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261684","url":null,"abstract":"Video compression has gain major importance with the use of video call, video transmission and streaming on wireless mobile devices. Video compression algorithms had been implemented mainly in software. However, the battery life restrictions have encouraged the hardware implementation of these algorithms. The present work is a power-aware scheme that take advantage of the temporal redundancy in the video stream as well as the status of the battery. The introduction of a simple motion detection algorithm decreases the need of calling the motion estimation and compensation process. The calls of the motion estimation and compensation process reduces operations causing a dynamic power reduction and a speed-up of the coding process. While a power-aware scheme preserve battery life by preventing a subdivision of the macroblock considering motion detection and battery capacity. The reduction on execution time for MPEG4 is in the range of 9% to 22% while achieves an average power reduction of 88%. While H.264/AVC achieves an execution time in the range of 99% to 89% with an average power reduction is 98%.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125757347","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261596
Sohail Khan, Ulises Cano Castillo, A. Reza, Javier De la Cruz Soto, Hector Valenzuela
Rapid growth of energy demand all over the world has compelled researchers to explore new ways to inject power to the grid. The connection of Electric Vehicles (EVs) may provide bidirectional flow of power between vehicle and grid. The Vehicle-to-Grid (V2G) energy flow can aid to improve grid efficiency, as well as other relevant parameters and reliability. V2G energy transfer offers an attractive economic opportunity for EV owners, and it might help in reducing grid operation costs in the urban feeders where the demand is constrained and peak-electricity prices are high. Other benefits include voltage regulation, reduction of power losses, peak load shaving, voltage profile improvement, etc. In this work, the V2G concept explores power losses relief and voltage profile improvement in a commercial feeder with nominal load values in Mexico City. From the scenarios considered, this work found that the V2G strategy is successful in improving the parameters provided the power injection does not exceed the hosting capacity of the feeder. Therefore, the V2G technology is useful in stabilizing the network in commercial zones where the load is considerably high at peak hours, especially in Mexico City.
{"title":"V2G study for electric grid reinforcement in a commercial feeder in Mexico City","authors":"Sohail Khan, Ulises Cano Castillo, A. Reza, Javier De la Cruz Soto, Hector Valenzuela","doi":"10.1109/ROPEC.2017.8261596","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261596","url":null,"abstract":"Rapid growth of energy demand all over the world has compelled researchers to explore new ways to inject power to the grid. The connection of Electric Vehicles (EVs) may provide bidirectional flow of power between vehicle and grid. The Vehicle-to-Grid (V2G) energy flow can aid to improve grid efficiency, as well as other relevant parameters and reliability. V2G energy transfer offers an attractive economic opportunity for EV owners, and it might help in reducing grid operation costs in the urban feeders where the demand is constrained and peak-electricity prices are high. Other benefits include voltage regulation, reduction of power losses, peak load shaving, voltage profile improvement, etc. In this work, the V2G concept explores power losses relief and voltage profile improvement in a commercial feeder with nominal load values in Mexico City. From the scenarios considered, this work found that the V2G strategy is successful in improving the parameters provided the power injection does not exceed the hosting capacity of the feeder. Therefore, the V2G technology is useful in stabilizing the network in commercial zones where the load is considerably high at peak hours, especially in Mexico City.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128576603","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261591
Josué Pacheco Chérrez, Brian Loza, L. G. González
This paper presents the design of a driver for 6 W residential LED luminaries with a Flyback topology in discontinuous conduction mode (DCM) using the FT833B12 integrated circuit, which has a constant current control without a feedback circuit. The built prototype is compared to a pair of similar commercial drivers where the characteristics of energy efficiency and current distortion are improved until achieving an efficiency of approximately 82% and harmonic distortion of 93.18%. Using a computational tool and considering the main losses of the built prototype, a study of the performance of the prototype is made.
{"title":"Design and analysis of performance and power quality of a led driver","authors":"Josué Pacheco Chérrez, Brian Loza, L. G. González","doi":"10.1109/ROPEC.2017.8261591","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261591","url":null,"abstract":"This paper presents the design of a driver for 6 W residential LED luminaries with a Flyback topology in discontinuous conduction mode (DCM) using the FT833B12 integrated circuit, which has a constant current control without a feedback circuit. The built prototype is compared to a pair of similar commercial drivers where the characteristics of energy efficiency and current distortion are improved until achieving an efficiency of approximately 82% and harmonic distortion of 93.18%. Using a computational tool and considering the main losses of the built prototype, a study of the performance of the prototype is made.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130066395","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261669
P. Martinez‐Rodriguez, D. U. Campos‐Delgado, J. F. Martinez-Garcia, J. Renteria-Soto, J. M. Sosa, C. A. Limones-Pozos
In medium and high voltage industrial applications multilevel converters are widely employed due to their capability to achieve both, high quality output voltages, as well as input currents. In particular, the neutral point clamped (NPC) converter highlights as a valuable choice. Hence, in this paper, the properties of single-phase NPC converters are studied. The analysis is focused on the active power injection property of a single-phase five level (5L-NPC) converter. The control scheme of this converter is based on a current tracking loop, which includes a proportional resonant (PR) scheme. Furthermore, the switching harmonic content is evaluated and compared to the three-level NPC (3L-NPC) counterpart. Moreover an efficiency analysis for both topologies is performed. Experimental validation in 2 kW single-phase 3L-NPC and 5L-NPC prototypes is provided to assess the performance of the controlled systems.
{"title":"A study on the single-phase NPC multilevel power converters for active power injection","authors":"P. Martinez‐Rodriguez, D. U. Campos‐Delgado, J. F. Martinez-Garcia, J. Renteria-Soto, J. M. Sosa, C. A. Limones-Pozos","doi":"10.1109/ROPEC.2017.8261669","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261669","url":null,"abstract":"In medium and high voltage industrial applications multilevel converters are widely employed due to their capability to achieve both, high quality output voltages, as well as input currents. In particular, the neutral point clamped (NPC) converter highlights as a valuable choice. Hence, in this paper, the properties of single-phase NPC converters are studied. The analysis is focused on the active power injection property of a single-phase five level (5L-NPC) converter. The control scheme of this converter is based on a current tracking loop, which includes a proportional resonant (PR) scheme. Furthermore, the switching harmonic content is evaluated and compared to the three-level NPC (3L-NPC) counterpart. Moreover an efficiency analysis for both topologies is performed. Experimental validation in 2 kW single-phase 3L-NPC and 5L-NPC prototypes is provided to assess the performance of the controlled systems.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125340792","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261685
A. Cleary-Balderas, A. Medina-Rios
Harmonic resonance is among important aspect need to be analyzed in a capacitor bank power system installation. For industrial power system with high operating power, the resonance control becomes a complex aspect. Therefore, effects of harmonics that are generated in the electrical system lines and capacitor banks are very evident causing amplification of the current at characteristics and non characteristics harmonics. This paper presents a solution for harmonic resonances mitigation in passive filters for reactive and harmonic power compensation system particularly in parallel connections. Then, an active power filter model with resonance damping is proposed and a topology model is established, the analysis results indicate that proposed has a good harmonic resonance damping characteristic. The proposed model is validated through simulations using Matlab-simulinkR.
{"title":"Harmonic resonance damping on capacitor bank filters for industrial power system applications","authors":"A. Cleary-Balderas, A. Medina-Rios","doi":"10.1109/ROPEC.2017.8261685","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261685","url":null,"abstract":"Harmonic resonance is among important aspect need to be analyzed in a capacitor bank power system installation. For industrial power system with high operating power, the resonance control becomes a complex aspect. Therefore, effects of harmonics that are generated in the electrical system lines and capacitor banks are very evident causing amplification of the current at characteristics and non characteristics harmonics. This paper presents a solution for harmonic resonances mitigation in passive filters for reactive and harmonic power compensation system particularly in parallel connections. Then, an active power filter model with resonance damping is proposed and a topology model is established, the analysis results indicate that proposed has a good harmonic resonance damping characteristic. The proposed model is validated through simulations using Matlab-simulinkR.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126398505","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 : 2017-11-01DOI: 10.1109/ROPEC.2017.8261693
Luis Pellegrin, H. Escalante, Alicia Morales, E. Morales, C. Reyes-García
This paper describes the design and analysis of results of the 2017 RedICA: Text-Image Matching (RICATIM) challenge. This academic competition faces the image labeling problem (assigning words to images) as one binary classification. Motivated by recent success of representation learning, we built a data set for binary classification in which each instance is the learned representation of a pair of an image and a word. Instances are labeled as positive, if the word is relevant for describing the content of the image and negative otherwise. Thus, participants of the challenge had to develop binary classification methods to distinguish between relevant and irrelevant text-image matchings. The challenge attracted 43 participants, that provided quite original and competitive solutions. The performance obtained by the top ranked participants was impressive, improving the performance of the baseline considerably. In this paper we describe the approached problem, the challenge design (including data and evaluation protocol), and provide an overview of the results achieved by participants.
{"title":"Overview of the 2017 RedICA text-image matching (RICATIM) challenge","authors":"Luis Pellegrin, H. Escalante, Alicia Morales, E. Morales, C. Reyes-García","doi":"10.1109/ROPEC.2017.8261693","DOIUrl":"https://doi.org/10.1109/ROPEC.2017.8261693","url":null,"abstract":"This paper describes the design and analysis of results of the 2017 RedICA: Text-Image Matching (RICATIM) challenge. This academic competition faces the image labeling problem (assigning words to images) as one binary classification. Motivated by recent success of representation learning, we built a data set for binary classification in which each instance is the learned representation of a pair of an image and a word. Instances are labeled as positive, if the word is relevant for describing the content of the image and negative otherwise. Thus, participants of the challenge had to develop binary classification methods to distinguish between relevant and irrelevant text-image matchings. The challenge attracted 43 participants, that provided quite original and competitive solutions. The performance obtained by the top ranked participants was impressive, improving the performance of the baseline considerably. In this paper we describe the approached problem, the challenge design (including data and evaluation protocol), and provide an overview of the results achieved by participants.","PeriodicalId":260469,"journal":{"name":"2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121179261","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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