Method and virtual reality device for improving image quality

A virtual reality device for improving image quality, comprising:

• a graphics processing unit;
• and
• a memory, operatively coupled to the graphics processing unit;
• wherein the graphics processing unit is configured to execute a program code stored in the memory to execute:
• receiving an image data and sensing information;
• dividing the image data into areas corresponding to different resolutions according to first parameter information, wherein the different resolutions correspond to different frequencies;
• rendering the areas in a single pass according to the sensing information and the different frequencies and outputting a rendered image data with the different resolutions;
• and
• resolving the rendered image data with the different resolutions into a final output image data with a first resolution according to second parameter information,
• wherein after receiving the sensing information, the graphics processing unit further executes the program code to execute:
• receiving time information from a time sensor;
• estimating a finish time of a current frame according to the time information;
• determining whether the finish time is before a video-synchronizing signal (Vsync);
• and
• generating an instruction signal to adjust the resolution when the finish time cannot be before the Vsync.