Monthly Archives: May 2016

Sound Intensity Probe

Sound Intensity Probe

  • Andrzej Czyzewski and Józef Kotus. Sound Intensity Probe. Patent (W.125097), Gdansk University of Technology, Poland, 2016.
    [BibTeX]
    @Misc{2016-05-KOTUS,
    author = {Andrzej Czyzewski and J\'{o}zef Kotus},
    title = {{Sound Intensity Probe}},
    date = {2016-05},
    year = {2016},
    howpublished = {Patent (W.125097), Gdansk University of Technology, Poland}
    }

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Hanging Intelligent Road Sign

Hanging Intelligent Road Sign

  • Andrzej Czyzewski. Hanging Intelligent Road Sign. Patent (W.125159), Gdansk University of Technology, Poland, 2016.
    [BibTeX]
    @Misc{2016-05-CZYZEWSKI,
    author = {Andrzej Czyzewski},
    title = {{Hanging Intelligent Road Sign}},
    date = {2016-05},
    year = {2016},
    howpublished = {Patent (W.125159), Gdansk University of Technology, Poland}
    }

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The pitfalls of overfitting in optimization of a manufacturing ouality control procedure

The pitfalls of overfitting in optimization of a manufacturing ouality control procedure

  • Tea Tušar, Klemen Gantar, and Bogdan Filipič. The pitfalls of overfitting in optimization of a manufacturing quality control procedure. In Proceedings of the 7th International Conference on Bioinspired Optimization Methods and their Applications, BIOMA 2016, pages 241-253, Bled, Slovenia, 2016.
    [BibTeX] [Abstract] [Download PDF]

    We are concerned with the estimation of copper-graphite joints quality in commutator manufacturing—a classification problem in which we wish to detect whether the joints are soldered well or have any of the four known defects. This quality control procedure can be automated by means of an on-line classifier that can assess the quality of commutators as they are being manufactured. A classifier suitable for this task can be constructed by combining computer vision, machine learning and evolutionary optimization techniques. While previous work has shown the validity of this approach, this paper demonstrates that the search for an accurate classifier can lead to overfitting despite cross-validation being used for assessing the classifier performance. We inspect several aspects of this phenomenon and propose to use repeated cross-validation in order to amend it.

    @InProceedings{2016-05-TUSAR,
    title = {{The pitfalls of overfitting in optimization of a manufacturing quality control procedure}},
    author = {Tea Tu\v{s}ar and Klemen Gantar and Bogdan Filipi\v{c}},
    booktitle = {{Proceedings of the 7th International Conference on Bioinspired Optimization Methods and their Applications, BIOMA 2016}},
    pages = {241-253},
    date = {2016-05-18/2016-05-20},
    year = {2016},
    address = {Bled, Slovenia},
    url = {http://bioma.ijs.si/proceedings/2016/17%20-%20The%20Pitfalls%20of%20Overfitting%20in%20Optimization%20of%20a%20Manufacturing%20Quality%20Control%20Procedure.pdf},
    abstract = {We are concerned with the estimation of copper-graphite joints quality in commutator manufacturing---a classification problem in which we wish to detect whether the joints are soldered well or have any of the four known defects. This quality control procedure can be automated by means of an on-line classifier that can assess the quality of commutators as they are being manufactured. A classifier suitable for this task can be constructed by combining computer vision, machine learning and evolutionary optimization techniques. While previous work has shown the validity of this approach, this paper demonstrates that the search for an accurate classifier can lead to overfitting despite cross-validation being used for assessing the classifier performance. We inspect several aspects of this phenomenon and propose to use repeated cross-validation in order to amend it.}
    }

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Rate-adaptive Multicast Video Streaming from Teams of Micro Aerial Vehicles

Rate-adaptive Multicast Video Streaming from Teams of Micro Aerial Vehicles

  • Raheeb Muzaffar, Vladimir Vukadinovic, and Andrea Cavallaro. Rate-adaptive Multicast Video Streaming from Teams of Micro Aerial Vehicles. In Proceedings of IEEE International Conference on Robotics and Automation, pages 1194-1201, Stockholm, Sweden, 2016. doi:10.1109/ICRA.2016.7487250
    [BibTeX] [Abstract]

    Video multicasting from cameras mounted on Micro Aerial Vehicles (MAVs) is desirable for applications such as search and rescue, surveillance and disaster management. Because of the mobility of the video sources and the high datarate of videos, the transmission rate should be adapted to the task at hand. Rate-adaptive video multicast streaming in 802.11 requires wireless link estimation as well as frequent feedback from multiple receivers. We propose an application layer rate-adaptive video multicast streaming framework using 802.11 adhoc network that is applicable when both the sender and the receiver nodes are mobile. The receiver nodes of a multicast group are dynamically elected based on their changing link conditions to gain feedback. An Application Layer Video Multicast Gateway (ALVM-GW) adapts the transmission rate and the video encoding rate based on the received feedback. Emulation results show that the proposed approach has balanced performance in terms of goodput, delay and packet loss.

    @InProceedings{2016-05-MUZAFFAR,
    title = {{Rate-adaptive Multicast Video Streaming from Teams of Micro Aerial Vehicles}},
    author = {Raheeb Muzaffar and Vladimir Vukadinovic and Andrea Cavallaro},
    booktitle = {{Proceedings of IEEE International Conference on Robotics and Automation}},
    address = {Stockholm, Sweden},
    date = {2016-05-16/2016-05-21},
    year = {2016},
    pages = {1194-1201},
    doi = {10.1109/ICRA.2016.7487250},
    abstract = {Video multicasting from cameras mounted on Micro Aerial Vehicles (MAVs) is desirable for applications such as search and rescue, surveillance and disaster management. Because of the mobility of the video sources and the high datarate of videos, the transmission rate should be adapted to the task at hand. Rate-adaptive video multicast streaming in 802.11 requires wireless link estimation as well as frequent feedback from multiple receivers. We propose an application layer rate-adaptive video multicast streaming framework using 802.11 adhoc network that is applicable when both the sender and the receiver nodes are mobile. The receiver nodes of a multicast group are dynamically elected based on their changing link conditions to gain feedback. An Application Layer Video Multicast Gateway (ALVM-GW) adapts the transmission rate and the video encoding rate based on the received feedback. Emulation results show that the proposed approach has balanced performance in terms of goodput, delay and packet loss.}
    }

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UHF ESPAR Antenna for Simple Angle of Arrival Estimation in UHF RFID Applications

UHF ESPAR Antenna for Simple Angle of Arrival Estimation in UHF RFID Applications

  • Mateusz Rzymowski, Damian Duraj, Ł., Krzysztof Nyka, and Przemysł. UHF ESPAR Antenna for Simple Angle of Arrival Estimation in UHF RFID Applications. In Proceedings of Microwaves, Radar, and Wireless Communication (MIKON) 21th IEEE International Conference, pages 1-4, Krakow, Poland, 2016. doi:10.1109/MIKON.2016.7491984
    [BibTeX] [Abstract]

    An electronically switched beam antenna for localization of passive UHF RFID tags based on a simple Angle of Arrival (AoA) technique is proposed. Detailed antenna design and realization are presented together with corresponding simulations and measurement results. Experimental tests with passive UHF RFID tag show the validity of theoretical assumptions for application of the antenna in UHF RFID based localization systems.

    @InProceedings{2016-05-RZYMOWSKI,
    author = {Mateusz Rzymowski and Damian Duraj and \L{}ukasz Kulas and Krzysztof Nyka and Przemys\l{}aw Wo\'{z}nica},
    title = {{UHF ESPAR Antenna for Simple Angle of Arrival Estimation in UHF RFID Applications}},
    booktitle = {{Proceedings of Microwaves, Radar, and Wireless Communication (MIKON) 21th IEEE International Conference}},
    date = {2016-05-09/2016-05-11},
    year = {2016},
    pages = {1-4},
    doi = {10.1109/MIKON.2016.7491984},
    address = {Krakow, Poland},
    abstract = {An electronically switched beam antenna for localization of passive UHF RFID tags based on a simple Angle of Arrival (AoA) technique is proposed. Detailed antenna design and realization are presented together with corresponding simulations and measurement results. Experimental tests with passive UHF RFID tag show the validity of theoretical assumptions for application of the antenna in UHF RFID based localization systems.}
    }

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Thales and the COPCAMS project: Efficient design of heterogeneous hardware and application optimization

Thales and the COPCAMS project: Efficient design of heterogeneous hardware and application optimization

  • François Duhem. Thales and the COPCAMS project: Efficient design of heterogeneous hardware and application optimization. Poster presented at the Embedded Vision Summit, 2016.
    [BibTeX]
    @Misc{2016-05-DUHEM,
    title = {{Thales and the COPCAMS project: Efficient design of heterogeneous hardware and application optimization}},
    author = {Fran\c{c}ois Duhem},
    date = {2016-05-02/2016-05-04},
    year = {2016},
    address = {Santa Clara, California, USA},
    howpublished = {Poster presented at the Embedded Vision Summit}
    }

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