An AR Visualization System for 3D Carbon Dioxide Concentration Measurement Using Fixed and Mobile Sensors.

Recently, the use of CO2 concentration monitors as a guide for ventilation is increasing in spaces where many people gather, such as offices, However, 2D map-based visualizations are not enough to understand the progression of indoor air pollution. Therefore, we propose a three-dimensional (3D) visualization of CO2 concentration using a head -mounted display (HMD). A 3D distribution of CO2 concentration is automatically calculated using the position coordinates and measured values of fixed and mobile sensors, The results of the preliminary user evaluation suggested that AR visualization may he a more effective way to inform the need for ventilation than conventional methods.