Building in-situ information retrieval method based on visual gaze

The invention discloses a building in-situ information retrieval method based on visual gaze. The method comprises the following steps: extracting and optimizing a building information model; gaze data acquisition; interacting the gaze data with the building model; the Visual Studio compiles a project and publishes the project to the HoloLens 2; the method comprises the following steps of: aligning a BIM (Building Information Model) model with a physical structure of a solid building through a space anchor point technology; and carrying out on-site building information retrieval by wearing a HoloLens 2 device. The invention provides a building information visual gaze retrieval method taking a real building component as a carrier based on a mixed reality technology. Linking and binding the digital information of the building component with the physical entity of the building component by using a mixed reality technology; an eye movement tracking technology is utilized, and visual information retrieval of'what