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Virtual walking attachment

23.12.2021

Japanese engineers have introduced an addition to the virtual reality helmet - footrests with vibration motors that simulate the feeling of walking. The system itself selects the necessary vibration for 360-degree rollers, evaluating the trajectory of the camera. How to feel vibrations and steps in the snow, and a walk on the lawn, the scientists specified in an article published in the journal IEEE Access.

Virtual walking systems can be divided into active and passive. Firstly, you will have to move your limbs on your own to walk in a virtual environment, and secondly, sensory stimuli and passive movements of the limbs or the whole body are used for this. The illusion of one's own movement can be created by a combination of auditory and tactile stimuli, as well as, for example, camera shake. You can also electrically stimulate the leg muscles or use vibration.

The engineers of the Toyohashi Institute of Technology settled on the latter option and taught their VR stand to generate vibrations for panoramic videos shot from the first person. Vibration can convey a feeling of pliability in the ground (snow, grass and sand), which in addition to visual stimuli will make you walk around in a VR helmet even while sitting.

Scientists have proposed a virtual walking system consisting of a chair and two footrests, each with two vibration motors. They create vibration for the toe and heel of the foot, and the algorithm helps the system to choose the specific vibration parameters for each type of environment: a corridor in a building, a lawn on the street, a concrete road and a snow-covered path.

Viewpoint trajectory estimation using simultaneous visual localization and display (visual SLAM) helps to create special vibrations. According to the developers, the developed system can turn any 360-degree videos into realistic virtual walks thanks to vibrations. The system was also tested on volunteers who rated the feeling of walking even if the vibrations did not match the type of scene. Although the level of realism in accordance with the vibration with the roller was much higher.

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To take part in the study, three factors are needed: curiosity, an accessible garden, and a desire to leave the house after dark. Participants of the research project will study different types of slugs and their habitats. They will also count the number of these gastropods and determine what exactly attracts them to the gardens.

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