Title :
Automatic drift calibration for EOG-based gaze input interface
Author :
Manabe, Hiroyuki ; Fukumoto, Masaaki ; Yagi, Takeshi
Author_Institution :
NTT DOCOMO, Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
A drift calibration technique for DC-coupled EOG (electrooculogram) systems is proposed. It assumes a non-linear relationship between EOG and eye angle and estimates the absolute eye angle by the EOG differences during saccade. Drift is calibrated every saccade without user´s explicit action, so it is especially suitable for long-term gaze input interfaces. An experiment confirms that it can estimate horizontal absolute eye angle with an error of about 5° in addition to accurate eye movement.
Keywords :
angular measurement; calibration; electro-oculography; medical signal processing; user interfaces; DC coupled EOG systems; EOG based gaze input interface; absolute eye angle estimation; automatic drift calibration; drift calibration technique; electrooculogram; saccade movement; Calibration; Electrodes; Electrooculography; Equations; Estimation; Mathematical model; Tracking;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE
Conference_Location :
Osaka
DOI :
10.1109/EMBC.2013.6609435
