Optimized walking straight guidance system for visually impaired person that use Android smartphone

A person with visual organs problems whose often called visually impaired person, either total or partial blindness has obstacles in doing motor activities, especially activities that require a person to move from a place to another such as walking have a veering tendency. This problem can risk the safety of the visually impaired person when walking in public area. The need for a system that can help people with special needs is felt important enough to support ease of activity for these people. This research proposes a mobile app based system to guide someone to walk straight using the motion sensors on the smartphone and audio-based guidance. The low-pass filter was applied to magnetometer and accelerometer data to reduce noise that resulted when the user walks. The results of this study can be used to train the visually impaired person to reduce the veering habits.