Method for improving mixed reality service and host

A host for improving a mixed reality service, comprising:

• a non-transitory storage circuit storing a program code;
• and
• a processor coupled to the non-transitory storage circuit and configured to access the program code to perform:
• obtaining a reference image for rendering a pass-through view from a color camera of the host;
• determining coordinate transformation information based on camera information of the host, wherein the coordinate transformation information is used to convert a rendering position from a preset rendering position to a reference rendering position;
• obtaining a predefined visual range of the mixed reality service;
• determining a reference reprojection parameter corresponding to the predefined visual range based on a preset reprojection parameter of the host, the camera information of the host, and the coordinate transformation information;
• rendering a virtual object corresponding to a target object to be rendered based on object information of the target object to be rendered and the coordinate transformation information;
• combining the virtual object with the reference image into the pass-through view;
• and
• reprojecting the pass-through view into visual content of the mixed reality service based on the reference reprojection parameter, and displaying the visual content.