@techreport{oai:ipsj.ixsq.nii.ac.jp:00211370,
 author = {永井, 崇大 and 藤田, 和之 and 高嶋, 和毅 and 北村, 喜文 and Takahiro, Nagai and Kazuyuki, Fujita and Kazuki, Takashima and Yoshifumi, Kitamura},
 issue = {10},
 month = {May},
 note = {Gaze is a useful input modality for estimating a user’s region of interest and pointing to a distant target, but the challenge is that it usually requires the installation or wearing of additional specialized devices. In this work, we propose a novel user interface that enables gaze input to the user’s surrounding environment using only a widely-used smartphone. By simultaneously using both front and rear cameras and a depth sensor on the smartphone, it can track the user’s head orientation while recognizing its own 3D position in a known 3D map. This allows the system to estimate the user’s 3D head-gaze direction to the surrounding environment. We conducted an early performance test to evaluate the accuracy of head-gaze estimation using our interface. Based on these results, we estimated that the required target size for avoiding erroneous input is 1.64 m × 0.94 m. Finally we discussed the interactions in which the proposal is effective., Gaze is a useful input modality for estimating a user’s region of interest and pointing to a distant target, but the challenge is that it usually requires the installation or wearing of additional specialized devices. In this work, we propose a novel user interface that enables gaze input to the user’s surrounding environment using only a widely-used smartphone. By simultaneously using both front and rear cameras and a depth sensor on the smartphone, it can track the user’s head orientation while recognizing its own 3D position in a known 3D map. This allows the system to estimate the user’s 3D head-gaze direction to the surrounding environment. We conducted an early performance test to evaluate the accuracy of head-gaze estimation using our interface. Based on these results, we estimated that the required target size for avoiding erroneous input is 1.64 m × 0.94 m. Finally we discussed the interactions in which the proposal is effective.},
 title = {スマートフォンのみを用いた周囲環境への視線入力インタフェースの検討},
 year = {2021}
}