Pub Date : 2009-12-18DOI: 10.1109/ROSE.2009.5355994
Juergen Eckert, F. Dressler, R. German
Flying four-rotor robots (quadrocopters) are on-board sensor controlled systems. In comparison to classical monorotor objects (helicopters), quadrocopters can be piloted with a much lower effort. However, lateral drifts can not be compensated only referring to the built-in sensors. The detection of such drifts is strongly necessary for indoor operation - without corrections a quadrocopter would quickly cause a collision. In order to compensate the dislocation, an additional indoor positioning system is needed. In our work, we provide a framework for time-of-flight based localization systems relying on ultrasonic sensors. It is optimized for use in sensor nodes with low computational power and limited memory. Nevertheless, it offers scalability and high accuracy even in case of single erroneous measurements. We implemented the system in our lab using ultrasound sensors that are light enough to be carried around by the flying object. Using this real-time localization system, a position controller can be implemented to maintain a given position or course.
{"title":"Real-time indoor localization support for four-rotor flying robots using sensor nodes","authors":"Juergen Eckert, F. Dressler, R. German","doi":"10.1109/ROSE.2009.5355994","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355994","url":null,"abstract":"Flying four-rotor robots (quadrocopters) are on-board sensor controlled systems. In comparison to classical monorotor objects (helicopters), quadrocopters can be piloted with a much lower effort. However, lateral drifts can not be compensated only referring to the built-in sensors. The detection of such drifts is strongly necessary for indoor operation - without corrections a quadrocopter would quickly cause a collision. In order to compensate the dislocation, an additional indoor positioning system is needed. In our work, we provide a framework for time-of-flight based localization systems relying on ultrasonic sensors. It is optimized for use in sensor nodes with low computational power and limited memory. Nevertheless, it offers scalability and high accuracy even in case of single erroneous measurements. We implemented the system in our lab using ultrasound sensors that are light enough to be carried around by the flying object. Using this real-time localization system, a position controller can be implemented to maintain a given position or course.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121548404","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355998
S. Hara, T. Ishimoto
For a wirelessly networked robot swarm, we have developed a method of generating a set of common coordinates with only ranging capability in the wireless communication protocol being used to network robots and have evaluated its performance by computer simulations and experiments. The proposed method essentially gives a robot swarm an initial step to notify each robot of its own heading direction in a set of generated coordinates, before the swarm tries to accomplish a given unified task. However, the estimated heading direction for each robot is not accurate enough to be able to control the motion of the swarm as a group, so a method for improving the accuracy of the heading direction is necessary after the initial step. In this paper, we propose a Least Squares (LS)-based method of improving the initially estimated heading direction for each robot, which is applicable during a series of the motions of the swarm. We evaluate the performance of the proposed method by computer simulations and experiments.
{"title":"A least squares-based heading direction estimation for a robot swarm with only ranging capability","authors":"S. Hara, T. Ishimoto","doi":"10.1109/ROSE.2009.5355998","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355998","url":null,"abstract":"For a wirelessly networked robot swarm, we have developed a method of generating a set of common coordinates with only ranging capability in the wireless communication protocol being used to network robots and have evaluated its performance by computer simulations and experiments. The proposed method essentially gives a robot swarm an initial step to notify each robot of its own heading direction in a set of generated coordinates, before the swarm tries to accomplish a given unified task. However, the estimated heading direction for each robot is not accurate enough to be able to control the motion of the swarm as a group, so a method for improving the accuracy of the heading direction is necessary after the initial step. In this paper, we propose a Least Squares (LS)-based method of improving the initially estimated heading direction for each robot, which is applicable during a series of the motions of the swarm. We evaluate the performance of the proposed method by computer simulations and experiments.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126891249","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355992
A. Comparetti, F. Fioretti, P. Pierleoni
Remote control and home automation terms are becoming very important nowadays. Sensors are everywhere: HVAC (Heating, Ventilation and Air Conditioning) systems, fridges, security cameras, hard disks inside servers, voltages, temperatures and fan speeds in modern computers are widespread. Access to these sensors, both physical and virtual (e.g. data retrieved from an operating system), is possible thanks to third party tools and applications. This work outlines a framework called OBRECAD (Object Based REmote Control And Domotics). OBRECAD allows the communication between sensors, generic devices and actuators. It is powerful enough to support current and future sensor implementations and usages thanks to the realized hardware abstraction, yet easy enough to use. It can be easily implemented even on a micro-controller. The command oriented messaging framework allow an ubiquitous access in a very easy way using even text only email, or any SMS capable device. Complex architectures can also be managed in an hierarchical way thanks to the gateway component. Finally, a Java prototype was developed, but any programming language can be used. The prototype is configured using XML files that describe the connections between devices.
{"title":"Object oriented framework for remote control and domotics","authors":"A. Comparetti, F. Fioretti, P. Pierleoni","doi":"10.1109/ROSE.2009.5355992","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355992","url":null,"abstract":"Remote control and home automation terms are becoming very important nowadays. Sensors are everywhere: HVAC (Heating, Ventilation and Air Conditioning) systems, fridges, security cameras, hard disks inside servers, voltages, temperatures and fan speeds in modern computers are widespread. Access to these sensors, both physical and virtual (e.g. data retrieved from an operating system), is possible thanks to third party tools and applications. This work outlines a framework called OBRECAD (Object Based REmote Control And Domotics). OBRECAD allows the communication between sensors, generic devices and actuators. It is powerful enough to support current and future sensor implementations and usages thanks to the realized hardware abstraction, yet easy enough to use. It can be easily implemented even on a micro-controller. The command oriented messaging framework allow an ubiquitous access in a very easy way using even text only email, or any SMS capable device. Complex architectures can also be managed in an hierarchical way thanks to the gateway component. Finally, a Java prototype was developed, but any programming language can be used. The prototype is configured using XML files that describe the connections between devices.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134613847","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355978
Marcelo J. Segura, V. Mut, H. Patiño
Robot localization is a fundamental problem in mobile robotics. This paper proposes the use of a new type of sensor that permits accurate localization in indoor environments. An impulse radio (IR) ultra wide-band (UWB) sensor uses very short baseband pulses for transmission. This sensor facilitates the development of indoor location and tracking applications based on time of arrival estimation with great accuracy. There are many different sensors and techniques that have been proposed for indoor localization; however they usually have large errors in non line of sight (NLOS) conditions or with certain environment conditions. The objective of this paper is to propose a self-localization system based on time of arrival (TOA) estimation algorithm that permits precise localization in indoor environments with obstructed line of sight. This work proposes a new wavelet cyclic cross correlation strategy for time of arrival estimation based on non-coherent receiver structure and sliding correlation techniques for multiple user differentiation. The simulation results show that the propose localization system overcome the problems of NLOS conditions and makes possible the mobile robot localization with small number of base stations.
{"title":"Mobile robot self-localization system using IR-UWB sensor in indoor environments","authors":"Marcelo J. Segura, V. Mut, H. Patiño","doi":"10.1109/ROSE.2009.5355978","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355978","url":null,"abstract":"Robot localization is a fundamental problem in mobile robotics. This paper proposes the use of a new type of sensor that permits accurate localization in indoor environments. An impulse radio (IR) ultra wide-band (UWB) sensor uses very short baseband pulses for transmission. This sensor facilitates the development of indoor location and tracking applications based on time of arrival estimation with great accuracy. There are many different sensors and techniques that have been proposed for indoor localization; however they usually have large errors in non line of sight (NLOS) conditions or with certain environment conditions. The objective of this paper is to propose a self-localization system based on time of arrival (TOA) estimation algorithm that permits precise localization in indoor environments with obstructed line of sight. This work proposes a new wavelet cyclic cross correlation strategy for time of arrival estimation based on non-coherent receiver structure and sliding correlation techniques for multiple user differentiation. The simulation results show that the propose localization system overcome the problems of NLOS conditions and makes possible the mobile robot localization with small number of base stations.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115258344","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355975
C. Alippi, R. Camplani, M. Roveri
The paper suggests an operating system-based framework that provides a comprehensive approach for energy management in Wireless Sensor Networks (WSNs). Differently from what proposed in the related literature, the suggested mechanisms decouple the logic behind energy management policies from their implementation. This novel approach allows WSN-users for easily developing their own management policy guaranteeing at the same time independency from the specific network topology, the application running on nodes and the hardware platform.
{"title":"A virtual machine for energy management in WSNs","authors":"C. Alippi, R. Camplani, M. Roveri","doi":"10.1109/ROSE.2009.5355975","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355975","url":null,"abstract":"The paper suggests an operating system-based framework that provides a comprehensive approach for energy management in Wireless Sensor Networks (WSNs). Differently from what proposed in the related literature, the suggested mechanisms decouple the logic behind energy management policies from their implementation. This novel approach allows WSN-users for easily developing their own management policy guaranteeing at the same time independency from the specific network topology, the application running on nodes and the hardware platform.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122506551","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355999
A. Nedelcu, F. Sandu, M. Machedon-Pisu, M. Alexandru, P. Ogrutan
Wireless technologies have witnessed a surge in recent years, making them more appealing for a wide range of applications, such as intelligent buildings. The purpose of this paper is to present a domotic system which integrates such wireless technologies. In order to remotely monitor and control the intelligent building, the authors have proposed an approach based on PDA (Personal Digital Assistant) Smartphones which include the functionalities required by such applications (e.g. processing power, multi-modal communication). Through this paper, the authors try to prove that wireless technologies can be successfully integrated into domotic environments and that the capabilities of high performance PDAs can be fully exploited.
近年来，无线技术迅猛发展，使其对智能建筑等广泛应用更具吸引力。本文的目的是提出一个集成这些无线技术的家用系统。为了对智能建筑进行远程监控，作者提出了一种基于PDA (Personal Digital Assistant，个人数字助理)智能手机的方法，该方法包含了这些应用所需的功能(如处理能力、多模态通信)。通过本文，作者试图证明无线技术可以成功地集成到家庭环境中，并且可以充分利用高性能pda的功能。
{"title":"Wireless-based remote monitoring and control of intelligent buildings","authors":"A. Nedelcu, F. Sandu, M. Machedon-Pisu, M. Alexandru, P. Ogrutan","doi":"10.1109/ROSE.2009.5355999","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355999","url":null,"abstract":"Wireless technologies have witnessed a surge in recent years, making them more appealing for a wide range of applications, such as intelligent buildings. The purpose of this paper is to present a domotic system which integrates such wireless technologies. In order to remotely monitor and control the intelligent building, the authors have proposed an approach based on PDA (Personal Digital Assistant) Smartphones which include the functionalities required by such applications (e.g. processing power, multi-modal communication). Through this paper, the authors try to prove that wireless technologies can be successfully integrated into domotic environments and that the capabilities of high performance PDAs can be fully exploited.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128484738","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355976
A. Yogeswaran, P. Payeur
This paper proposes an innovative solution to the problem of extracting feature nodes from a 3D model and grouping nearby feature nodes according to the likelihood that they belong to the same feature. The technique is designed specifically with the problem of detecting unwanted deformations on automotive body part in mind, where feature line detection will not always give the best results. Using an octree representation, the multiresolution method is able to analyze the model for features of various scales. It also uses the octree data structure for feature grouping, and provides an alternative to feature line extraction for connecting similar feature nodes. An existing technique is compared to the proposed approach for feature extraction, and results are presented for the feature grouping method using a point cloud of a miniature car model.
{"title":"Features extraction from point clouds for automated detection of deformations on automotive body parts","authors":"A. Yogeswaran, P. Payeur","doi":"10.1109/ROSE.2009.5355976","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355976","url":null,"abstract":"This paper proposes an innovative solution to the problem of extracting feature nodes from a 3D model and grouping nearby feature nodes according to the likelihood that they belong to the same feature. The technique is designed specifically with the problem of detecting unwanted deformations on automotive body part in mind, where feature line detection will not always give the best results. Using an octree representation, the multiresolution method is able to analyze the model for features of various scales. It also uses the octree data structure for feature grouping, and provides an alternative to feature line extraction for connecting similar feature nodes. An existing technique is compared to the proposed approach for feature extraction, and results are presented for the feature grouping method using a point cloud of a miniature car model.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126550694","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355989
Y. Arai, M. Nishiyama, Kazuhiro Watanabe
A hetero-core fiber optic sensor has the capability of combining sensing and communication signals in a single fiber transmission line and has many advantages for environmental information monitoring such as home-security. This is because its cost-effectiveness due to its temperature independency and intensity based measurement. We have developed a hetero-core fiber optic binary sensor that can be connected in tandem to detect the number of doors and windows that are opened or closed. In this paper, we propose a new improved method for using hetero-core fiber optic binary sensors, which are regarded as binary switches, with tandem connection. A unique pulse loss change enables the connected switch system to identify the states of the switches. As a result, the total optical loss in the transmission line is reduced. Therefore, the number of binary switches connected in tandem can be increased on a single transmission line. The unique pulse peaks in loss can be induced by the flat spring flipping and, in addition, achieved by means of adjusting the position of the flat spring inside the binary switch module. The typical pulse peak and insertion loss of each binary switch are estimated to be changed with ranging from 0.13 to 0.75 dB in positive, from −0.47 to −0.03 dB in negative sides and from 2.23 to 2.61 dB, respectively, with the position of the hetero-core portion within the binary switch module. Two binary switches are successfully demonstrated tandem connected monitoring along a single transmission line by the optical loss change. Results of our experiments show that the number of binary switches connected in tandem can be increased significantly on a single transmission line.
{"title":"Hetero-core fiber optic binary sensors based on pulse loss change with tandem connection for security network","authors":"Y. Arai, M. Nishiyama, Kazuhiro Watanabe","doi":"10.1109/ROSE.2009.5355989","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355989","url":null,"abstract":"A hetero-core fiber optic sensor has the capability of combining sensing and communication signals in a single fiber transmission line and has many advantages for environmental information monitoring such as home-security. This is because its cost-effectiveness due to its temperature independency and intensity based measurement. We have developed a hetero-core fiber optic binary sensor that can be connected in tandem to detect the number of doors and windows that are opened or closed. In this paper, we propose a new improved method for using hetero-core fiber optic binary sensors, which are regarded as binary switches, with tandem connection. A unique pulse loss change enables the connected switch system to identify the states of the switches. As a result, the total optical loss in the transmission line is reduced. Therefore, the number of binary switches connected in tandem can be increased on a single transmission line. The unique pulse peaks in loss can be induced by the flat spring flipping and, in addition, achieved by means of adjusting the position of the flat spring inside the binary switch module. The typical pulse peak and insertion loss of each binary switch are estimated to be changed with ranging from 0.13 to 0.75 dB in positive, from −0.47 to −0.03 dB in negative sides and from 2.23 to 2.61 dB, respectively, with the position of the hetero-core portion within the binary switch module. Two binary switches are successfully demonstrated tandem connected monitoring along a single transmission line by the optical loss change. Results of our experiments show that the number of binary switches connected in tandem can be increased significantly on a single transmission line.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126082597","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5356000
Machedon-Pisu Mihai, N. Adrian, Szekely Iuliu, Morariu Gheorghe, Miron Mihai, K. Csaba-Zoltan
The Wireless Sensor Network is a special type of network and one of its main requirements refers to energy efficiency. This paper deals with the first step in tracking: localization in wireless networks, in which the energy resources are limited. The radio communications are provided by the IEEE 802.15.4 standard (ZigBee) and by testing in different indoor scenarios, with different power levels, it can be determined whether this standard can be successfully implemented in wireless sensor networks for tracking applications. The results of these measurements are presented in the paper and solutions are given to the issue of precision tracking with less power consumption.
{"title":"Energy-efficient tracking for wireless sensor networks","authors":"Machedon-Pisu Mihai, N. Adrian, Szekely Iuliu, Morariu Gheorghe, Miron Mihai, K. Csaba-Zoltan","doi":"10.1109/ROSE.2009.5356000","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5356000","url":null,"abstract":"The Wireless Sensor Network is a special type of network and one of its main requirements refers to energy efficiency. This paper deals with the first step in tracking: localization in wireless networks, in which the energy resources are limited. The radio communications are provided by the IEEE 802.15.4 standard (ZigBee) and by testing in different indoor scenarios, with different power levels, it can be determined whether this standard can be successfully implemented in wireless sensor networks for tracking applications. The results of these measurements are presented in the paper and solutions are given to the issue of precision tracking with less power consumption.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"75 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128062830","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 : 2009-12-18DOI: 10.1109/ROSE.2009.5355974
C. Alippi, G. Boracchi, M. Roveri
Guaranteeing the quality for images acquired by nodes of a Wireless Multimedia Sensor Network (WMSN) is a critical issue, especially in outdoor applications. In a distributed perspective, the node should promptly detect the deterioration of the quality of the acquired data and, whenever possible, react. This work addresses the problem of determining when a camera mounted on a WMSN node starts acquiring data corrupted because of a drop on the camera lens, which may frequently occur in outdoor deployments. The resulting images have been modeled as corrupted by a blurring operator that may affect the whole image or only in some areas. The monitoring of the degradation process is obtained by combining blur measurements from the acquired images with a change detection test to assess changes in the camera status. Both the blur measurements and the change detection test do not require any assumption about the image content or the blur characteristics hence making the suggested methodology rather effective in a large class of applications.
{"title":"Detecting drops on lens in wireless multimedia sensor network nodes","authors":"C. Alippi, G. Boracchi, M. Roveri","doi":"10.1109/ROSE.2009.5355974","DOIUrl":"https://doi.org/10.1109/ROSE.2009.5355974","url":null,"abstract":"Guaranteeing the quality for images acquired by nodes of a Wireless Multimedia Sensor Network (WMSN) is a critical issue, especially in outdoor applications. In a distributed perspective, the node should promptly detect the deterioration of the quality of the acquired data and, whenever possible, react. This work addresses the problem of determining when a camera mounted on a WMSN node starts acquiring data corrupted because of a drop on the camera lens, which may frequently occur in outdoor deployments. The resulting images have been modeled as corrupted by a blurring operator that may affect the whole image or only in some areas. The monitoring of the degradation process is obtained by combining blur measurements from the acquired images with a change detection test to assess changes in the camera status. Both the blur measurements and the change detection test do not require any assumption about the image content or the blur characteristics hence making the suggested methodology rather effective in a large class of applications.","PeriodicalId":107220,"journal":{"name":"2009 IEEE International Workshop on Robotic and Sensors Environments","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123238510","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：