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Digital Processing Of Magnetic, Angular-Rate And Gravity Signals For Human-Computer Interaction, Neeranut Ratchatanantakit
Digital Processing Of Magnetic, Angular-Rate And Gravity Signals For Human-Computer Interaction, Neeranut Ratchatanantakit
FIU Electronic Theses and Dissertations
This dissertation pursued the definition and evaluation of a processing approach for robust real-time orientation estimation of a miniature Magnetic, Angular-Rate, Gravity (MARG) module for use in a human-computer interaction system that also uses a 3-camera IR-video module for position estimation. The proposed algorithm introduces the novel idea of spatially mapping the level of trustworthiness of the magnetometer-based potential corrections to the orientation estimate. This trustworthiness level is used to reduce the strength of magnetometer-based corrections of the orientation estimate where the magnetic field distortion invalidates the assumptions necessary for those corrections.
The new algorithm addresses the three research questions …