Mr. Zilong Liang Profile

Zilong Liang

at Univ. of Tsukuba

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Proceedings Article | 1 May 2022 Paper

Three-stage navigation to hand size object for visually impaired

Zilong Liang, Hidehiko Shishido, Yoshinari Kameda

Proceedings Volume 12177, 121772F (2022) https://doi.org/10.1117/12.2626172

KEYWORDS: Visualization, Navigation systems, Cameras, Autoregressive models, Target recognition, Video processing, Video, System identification, Switching, Scientific research

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We propose a three-stage navigation method to a hand size target object using sound guidance for the visually impaired in a walking distance situation. The advantage of our proposed method is to let visually impaired people reach a target object that he/she should touch with only a camera-equipped wearable device. It could apply to any indoor situation because our proposed system needs only a vision-based pre-registration process where only a single video trajectory should be set in advance. The navigation is decomposed into three stages—path navigation, body navigation, and hand navigation. As for the walking stage, we utilize the Clew app that is sufficient for this purpose. For the successive two stages, we introduce AR anchor. The AR anchor should be registered on the target object in advance. Our sophisticated sound guidance is made to let the subject reach the target with the resolution of hand size. The stage change is informed by vibration. We have conducted a preliminary evaluation with our smartphone-based system and confirmed that the proposed method can navigate users to a hand size target starting from a 5-meter away position.

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