@INPROCEEDINGS {BWGT08, title = {Robust Recognition of Reading Activity in Transit Using Wearable Electrooculography}, author = {Bulling, Andreas and Ward, Jamie A. and Gellersen, Hans-W. and Tr\"oster, Gerhard}, booktitle = {Proc. of the 6th International Conference on Pervasive Computing (Pervasive 2008)}, year = {2008}, month = {May}, pages = {19--37}, location = {Sydney, Australia}, doi = {10.1007/978-3-540-79576-6_2}, keywords = {Activity Recognition, Wearable, Electrooculography, EOG, Recognition of Reading, Transit, Reading Activity}, abstract = {In this work we analyse the eye movements of people in transit in an everyday environment using a wearable electrooculographic (EOG) system. We compare three approaches for continuous recognition of reading activities: a string matching algorithm which exploits typical characteristics of reading signals, such as saccades and fixations; and two variants of Hidden Markov Models (HMMs) - mixed Gaussian and discrete. The recognition algorithms are evaluated in an experiment performed with eight subjects reading freely chosen text without pictures while sitting at a desk, standing, walking indoors and outdoors, and riding a tram. A total dataset of roughly 6 hours was collected with reading activity accounting for about half of the time. We were able to detect reading activities over all subjects with a top recognition rate of 80.2% (71.0% recall, 11.6% false positives) using string matching. We show that EOG is a potentially robust technique for reading recognition across a number of typical daily situations.}, }