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An Online System for Remote SHM Operation with Content Adaptive Signal Compression

Abstract : Remote engineering systems are valuable tools to give visual assistance and remote support e.g. in NDT (Non-destructive Testing) or SHM (Structural Health Monitoring). They allow discussing a second opinion with a remote expert and thus reducing the human factor during testing and monitoring. For an optimal impression of the situation, the second person requires both a camera view of the location and the screen view of the system used. The OMA system (Online Maintenance Assistance) implements this two-view collaboration. Remote partners can see and actively control the equipment, while observing details of the location in the camera window. Due to varying working conditions, screen signals and communication properties, an adaptive compression for both signals (camera and screen) is proposed. This permits to always maintain the best possible visual quality for the assessment performed by the remote partner. The OMA screen compression is valuable for dynamic signals like in most NDT applications. Slower NDT and SHM applications benefit from a smoother and more realistic handling of the controlled software. Currently compression profiles are switched manually, but a classificator will soon allow automatic adaptation. Since most of the OMA system is browser based, it can be used on laptops or tablets and will be available for the iOS based iPad soon. The compression benefits can be used for sensor data compression and direct sensor data communication as well. New OMA integrations include other testing technologies, devices and other and other signal related aspects. The authors are interested in other collaboration scenario with the neeed for multiple views on cameras and screens.
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https://hal.inria.fr/hal-01020357
Contributor : Anne Jaigu <>
Submitted on : Tuesday, July 8, 2014 - 9:59:07 AM
Last modification on : Thursday, February 7, 2019 - 5:48:32 PM
Long-term archiving on: : Wednesday, October 8, 2014 - 11:36:15 AM

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Clemens Westerkamp, Alexander Hennewig, Holger Speckmann, Wolfgang Bisle, Nicolas Colin, et al.. An Online System for Remote SHM Operation with Content Adaptive Signal Compression. EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01020357⟩

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