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Full-Text Articles in Signal Processing
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 …
Non-Intrusive Affective Assessment In The Circumplex Model From Pupil Diameter And Facial Expression Monitoring, Sudarat Tangnimitchok
Non-Intrusive Affective Assessment In The Circumplex Model From Pupil Diameter And Facial Expression Monitoring, Sudarat Tangnimitchok
FIU Electronic Theses and Dissertations
Automatic methods for affective assessment seek to enable computer systems to recognize the affective state of their users. This dissertation proposes a system that uses non-intrusive measurements of the user’s pupil diameter and facial expression to characterize his /her affective state in the Circumplex Model of Affect. This affective characterization is achieved by estimating the affective arousal and valence of the user’s affective state.
In the proposed system the pupil diameter signal is obtained from a desktop eye gaze tracker, while the face expression components, called Facial Animation Parameters (FAPs) are obtained from a Microsoft Kinect module, which also captures …