Projection device and operating method thereof

A method of operating a projection device for projecting an image, the projection device including a projector and a fisheye lens, the method comprising:

• generating a correction image, that corrects distortion of an input image projected onto a screen through the fisheye lens, by:
• calculating a plurality of reference locations, each calculated reference location of the plurality of calculated reference locations being based respectively on pixel coordinates of a pixel of a plurality of pixels of the generated correction image, and
• setting a pixel value of each pixel of the plurality of pixels of the generated correction image by referencing a pixel value of the input image corresponding to each respective calculated reference location of the plurality of calculated reference locations;
• and
• controlling the projector to project the generated correction image onto the screen through the fisheye lens.

A non-transitory computer-readable medium having instructions stored therein, which when executed by at least one processor cause the at least one processor to execute a method of operating a projection device, the method comprising:

• generating a correction image, that corrects distortion of an input image projected onto a screen through the fisheye lens, by:
• calculating a plurality of reference locations, each calculated reference location of the plurality of calculated reference locations being based respectively on pixel coordinates of a pixel of a plurality of pixels of the generated correction image, and
• setting a pixel value of each pixel of the plurality of pixels of the generated correction image by referencing a pixel value of the input image corresponding to each respective calculated reference location of the plurality of calculated reference locations;
• and
• controlling the projector to project the generated correction image onto the screen through the fisheye lens.