A dynamic 3D foot reconstruction system

Ali K. Thabet, E. Trucco, J. Salvi, W. Wang, Rami J. Abboud

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    Foot problems are varied and range from simple disorders through to complex diseases and joint deformities. Wherever possible, the use of insoles, or orthoses, is preferred over surgery. Current insole design techniques are based on static measurements of the foot, despite the fact that orthoses are prevalently used in dynamic conditions while walking or running. This paper presents the design and implementation of a structured-light prototype system providing dense three dimensional (3D) measurements of the foot in motion, and its use to show that foot measurements in dynamic conditions differ significantly from their static counterparts. The input to the system is a video sequence of a foot during a single step; the output is a 3D reconstruction of the plantar surface of the foot for each frame of the input. Engineering and clinical tests were carried out for the validation of the system. The accuracy of the system was found to be 0.34 mm with planar test objects. In tests with real feet, the system proved repeatable, with reconstruction differences between trials one week apart averaging 2.44 mm (static case) and 2.81 mm (dynamic case). Furthermore, a study was performed to compare the effective length of the foot between static and dynamic reconstructions using the 4D system. Results showed an average increase of 9 mm for the dynamic case. This increase is substantial for orthotics design, cannot be captured by a static system, and its subject-specific measurement is crucial for the design of effective foot orthoses.

    Original languageEnglish
    Title of host publicationProceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC
    Place of PublicationNew York
    PublisherIEEE Computer Society
    Pages599-602
    Number of pages4
    ISBN (Electronic)9781424441228
    ISBN (Print)9781424441211
    DOIs
    Publication statusPublished - 2011
    Event33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Boston, United States
    Duration: 30 Aug 20113 Sep 2011

    Conference

    Conference33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
    Abbreviated titleEMBC 2011
    CountryUnited States
    CityBoston
    Period30/08/113/09/11

    Keywords

    • STRUCTURED LIGHT
    • ORTHOSES

    Cite this

    Thabet, A. K., Trucco, E., Salvi, J., Wang, W., & Abboud, R. J. (2011). A dynamic 3D foot reconstruction system. In Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC (pp. 599-602). New York: IEEE Computer Society. https://doi.org/10.1109/IEMBS.2011.6090133
    Thabet, Ali K. ; Trucco, E. ; Salvi, J. ; Wang, W. ; Abboud, Rami J. / A dynamic 3D foot reconstruction system. Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC. New York : IEEE Computer Society, 2011. pp. 599-602
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    title = "A dynamic 3D foot reconstruction system",
    abstract = "Foot problems are varied and range from simple disorders through to complex diseases and joint deformities. Wherever possible, the use of insoles, or orthoses, is preferred over surgery. Current insole design techniques are based on static measurements of the foot, despite the fact that orthoses are prevalently used in dynamic conditions while walking or running. This paper presents the design and implementation of a structured-light prototype system providing dense three dimensional (3D) measurements of the foot in motion, and its use to show that foot measurements in dynamic conditions differ significantly from their static counterparts. The input to the system is a video sequence of a foot during a single step; the output is a 3D reconstruction of the plantar surface of the foot for each frame of the input. Engineering and clinical tests were carried out for the validation of the system. The accuracy of the system was found to be 0.34 mm with planar test objects. In tests with real feet, the system proved repeatable, with reconstruction differences between trials one week apart averaging 2.44 mm (static case) and 2.81 mm (dynamic case). Furthermore, a study was performed to compare the effective length of the foot between static and dynamic reconstructions using the 4D system. Results showed an average increase of 9 mm for the dynamic case. This increase is substantial for orthotics design, cannot be captured by a static system, and its subject-specific measurement is crucial for the design of effective foot orthoses.",
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    Thabet, AK, Trucco, E, Salvi, J, Wang, W & Abboud, RJ 2011, A dynamic 3D foot reconstruction system. in Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC. IEEE Computer Society, New York, pp. 599-602, 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society , Boston, United States, 30/08/11. https://doi.org/10.1109/IEMBS.2011.6090133

    A dynamic 3D foot reconstruction system. / Thabet, Ali K.; Trucco, E.; Salvi, J.; Wang, W.; Abboud, Rami J.

    Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC. New York : IEEE Computer Society, 2011. p. 599-602.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    AU - Trucco, E.

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    AB - Foot problems are varied and range from simple disorders through to complex diseases and joint deformities. Wherever possible, the use of insoles, or orthoses, is preferred over surgery. Current insole design techniques are based on static measurements of the foot, despite the fact that orthoses are prevalently used in dynamic conditions while walking or running. This paper presents the design and implementation of a structured-light prototype system providing dense three dimensional (3D) measurements of the foot in motion, and its use to show that foot measurements in dynamic conditions differ significantly from their static counterparts. The input to the system is a video sequence of a foot during a single step; the output is a 3D reconstruction of the plantar surface of the foot for each frame of the input. Engineering and clinical tests were carried out for the validation of the system. The accuracy of the system was found to be 0.34 mm with planar test objects. In tests with real feet, the system proved repeatable, with reconstruction differences between trials one week apart averaging 2.44 mm (static case) and 2.81 mm (dynamic case). Furthermore, a study was performed to compare the effective length of the foot between static and dynamic reconstructions using the 4D system. Results showed an average increase of 9 mm for the dynamic case. This increase is substantial for orthotics design, cannot be captured by a static system, and its subject-specific measurement is crucial for the design of effective foot orthoses.

    KW - STRUCTURED LIGHT

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    DO - 10.1109/IEMBS.2011.6090133

    M3 - Conference contribution

    SN - 9781424441211

    SP - 599

    EP - 602

    BT - Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC

    PB - IEEE Computer Society

    CY - New York

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    Thabet AK, Trucco E, Salvi J, Wang W, Abboud RJ. A dynamic 3D foot reconstruction system. In Proceedings of the 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC. New York: IEEE Computer Society. 2011. p. 599-602 https://doi.org/10.1109/IEMBS.2011.6090133